Android實現橫屏切換科學計算器

本文實例為大傢分享瞭Android實現橫屏切換科學計算器的具體代碼,供大傢參考,具體內容如下

簡單計算器設計,實現以下功能:

1、豎屏時能實現基本的加減乘除運算、回退和清空輸入。
2、橫屏時變為科學計算器,實現函數計算、進制換算等功能。輸入計算公式,按等號鍵輸出計算結果。
3、公式輸入和結果顯示區支持長按彈出復制、粘貼功能。
4、使用計算器過程中應不彈出軟鍵盤。
5、可以通過進度條實時調整計算結果保留的小數點後位數,或者通過音量鍵完成同樣的效果。
6、實現附加功能:三角函數、階乘、XY、八進制轉換、十六進制轉換、√(Y&X)及括號,如sin(90)。

豎屏簡單計算器

豎屏界面設計xml代碼:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    tools:context=".MainActivity">
 
    <LinearLayout
        android:id="@+id/layout1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
 
        <EditText
            android:id="@+id/textView"
            android:layout_width="match_parent"
            android:height="5dp"
            android:gravity="center|end"
            android:textColor="@color/black"
            android:textSize="50sp"
            android:text=""
            android:enabled="true"
            android:textCursorDrawable="@null"
            android:background="@null"
            android:inputType="none"
            android:textIsSelectable="true"
            android:layout_height="5dp" />
 
 
        <SeekBar
            android:id="@+id/seekBar"
            style="@style/Widget.AppCompat.SeekBar.Discrete"
            android:layout_width="match_parent"
            android:layout_height="6dp"
            android:layout_marginBottom="5dp"
            android:progressDrawable="@drawable/bar"
            android:min="1"
            android:max="10"/>
 
        <androidx.gridlayout.widget.GridLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:useDefaultMargins="false"
            app:columnCount="4"
            app:rowCount="5">
 
            <Button
                android:id="@+id/button5"
                android:background="@drawable/func_btn_style"
                android:textSize="24sp"
                android:textColor="#0000ff"
                android:text="C" />
 
            <Button
                android:id="@+id/button6"
                android:background="@drawable/func_btn_style"
                android:textSize="24sp"
                android:textColor="#0000ff"
                android:text="÷" />
 
            <Button
                android:id="@+id/button7"
                android:background="@drawable/func_btn_style"
                android:textSize="24sp"
                android:textColor="#0000ff"
                android:text="×" />
 
            <Button
                android:id="@+id/button8"
                android:background="@drawable/func_btn_style"
                android:textSize="24sp"
                android:textColor="#0000ff"
                android:text="◁" />
 
            <Button
                android:id="@+id/button9"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="1" />
 
            <Button
                android:id="@+id/button10"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="2" />
 
            <Button
                android:id="@+id/button11"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="3" />
 
            <Button
                android:id="@+id/button12"
                android:background="@drawable/func_btn_style"
                android:textSize="24sp"
                android:textColor="#0000ff"
                android:text="-" />
 
            <Button
                android:id="@+id/button13"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="4" />
 
            <Button
                android:id="@+id/button14"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="5" />
 
            <Button
                android:id="@+id/button15"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="6" />
 
            <Button
                android:id="@+id/button16"
                android:background="@drawable/func_btn_style"
                android:textSize="24sp"
                android:textColor="#0000ff"
                android:text="+" />
 
            <Button
                android:id="@+id/button17"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="7" />
 
            <Button
                android:id="@+id/button18"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="8" />
 
            <Button
                android:id="@+id/button19"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="9" />
 
            <Button
                android:id="@+id/button20"
                android:background="@drawable/equals_button_style"
                android:textSize="24sp"
                android:textColor="@color/white"
                app:layout_rowSpan="2"
                android:text="=" />
 
            <Button
                android:id="@+id/button21"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="%" />
            <Button
                android:id="@+id/button22"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="0" />
            <Button
                android:id="@+id/button23"
                android:background="@drawable/buttonstyle"
                android:textSize="24sp"
                android:textColor="@color/black"
                android:text="." />
        </androidx.gridlayout.widget.GridLayout>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

豎屏效果圖:(調節進度條或通過音量鍵可以調節小數點位數唷!)

橫屏xml代碼:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    tools:context=".MainActivity">
    <!-- 結果顯示框 -->
    <LinearLayout
        android:id="@+id/layout2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
 
        <EditText
            android:id="@+id/input"
            android:layout_width="match_parent"
            android:layout_height="75dp"
            android:cursorVisible="false"
            android:gravity="right|center_vertical"
            android:enabled="true"
            android:textCursorDrawable="@null"
            android:background="@null"
            android:inputType="none"
            android:textSize="30sp"
            android:textIsSelectable="true"/>
 
 
        <!-- 接下去采TableRow的格式進行佈局設計 -->
 
        <androidx.gridlayout.widget.GridLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:rowCount="7"
            app:columnCount="6">
 
            <TextView
                android:id="@+id/M"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text=" Mem : " />
 
            <TextView
                android:id="@+id/mem"
                android:layout_height="wrap_content"
                app:layout_columnSpan="5"
                android:gravity="left"
                android:text=" 0" />
 
            <SeekBar
                android:id="@+id/seekBar"
                style="@style/Widget.AppCompat.SeekBar.Discrete"
                android:layout_width="match_parent"
                android:progressDrawable="@drawable/bar"
                android:layout_marginBottom="5dp"
                android:layout_height="6dp"
                app:layout_columnSpan="6"
                android:min="1"
                android:max="10"/>
 
            <TextView
                android:id="@+id/_drg"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:gravity="center"
                android:background="@drawable/func_btn_style"
                android:text="DEG" />
 
            <Button
                android:id="@+id/drg"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:textSize="18sp"
                android:textColor="#888"
                android:text="DRG" />
 
            <Button
                android:id="@+id/mc"
                android:layout_height="wrap_content"
                app:layout_columnSpan="2"
                android:background="@drawable/func_btn_style"
                android:textColor="#888"
                android:textSize="18sp"
                android:text="MC" />
 
            <Button
                android:id="@+id/c"
                android:layout_height="wrap_content"
                app:layout_columnSpan="2"
                android:background="@drawable/func_btn_style"
                android:textColor="#00b5e2"
                android:textSize="18sp"
                android:text="C" />
 
            <Button
                android:id="@+id/sin"
                android:layout_height="wrap_content"
                android:text="sin"
                android:background="@drawable/func_btn_style"
                android:textSize="18sp"
                android:textColor="#888"
                android:textAllCaps="false"/>
 
            <Button
                android:id="@+id/cos"
                android:layout_height="wrap_content"
                android:textAllCaps="false"
                android:background="@drawable/func_btn_style"
                android:textSize="18sp"
                android:textColor="#888"
                android:text="cos" />
 
            <Button
                android:id="@+id/tan"
                android:layout_height="wrap_content"
                android:textAllCaps="false"
                android:textSize="18sp"
                android:textColor="#888"
                android:background="@drawable/func_btn_style"
                android:text="tan" />
 
            <Button
                android:id="@+id/factorial"
                android:layout_height="wrap_content"
                android:textAllCaps="false"
                android:textSize="18sp"
                android:textColor="#888"
                android:background="@drawable/func_btn_style"
                android:text="n!" />
 
            <Button
                android:id="@+id/bksp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                app:layout_columnSpan="2"
                android:background="@drawable/func_btn_style"
                android:textColor="#00b5e2"
                android:textSize="18sp"
                android:text="◁" />
 
            <Button
                android:id="@+id/one"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:textSize="18sp"
                android:text="1" />
 
            <Button
                android:id="@+id/two"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:textSize="18sp"
                android:text="2" />
 
            <Button
                android:id="@+id/three"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:textSize="18sp"
                android:text="3" />
 
            <Button
                android:id="@+id/divide"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:textColor="#00b5e2"
                android:textSize="18sp"
                android:text="÷" />
 
            <Button
                android:id="@+id/left"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:text="("
                android:textColor="#888"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/right"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:text=")"
                android:textColor="#888"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/four"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="4"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/five"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="5"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/six"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="6"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/mul"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:textColor="#00b5e2"
                android:text="×"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/sqrt"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:text="√"
                android:textColor="#888"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/square"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:text="^"
                android:textColor="#888"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/seven"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="7"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/eight"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="8"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/nine"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="9"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/sub"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:textColor="#00b5e2"
                android:text="-"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/log"
                android:layout_height="wrap_content"
                android:textAllCaps="false"
                android:background="@drawable/func_btn_style"
                android:text="log"
                android:textColor="#888"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/ln"
                android:layout_height="wrap_content"
                android:textAllCaps="false"
                android:background="@drawable/func_btn_style"
                android:text="ln"
                android:textColor="#888"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/dot"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="."
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/zero"
                android:layout_height="wrap_content"
                android:background="@drawable/buttonstyle"
                android:text="0"
                android:textSize="18sp"/>
 
 
 
            <LinearLayout
                android:id="@+id/linear"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal" >
 
                <Button
                    android:id="@+id/bd"
                    android:layout_height="match_parent"
                    android:background="@drawable/buttonstyle"
                    android:text="D"
                    android:textSize="18sp"
                    android:layout_weight="1"
                    android:layout_width="match_parent" />
 
                <Button
                    android:id="@+id/db"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="@drawable/buttonstyle"
                    android:textSize="18sp"
                    android:layout_weight="1"
                    android:text="B" />
            </LinearLayout>
 
            <Button
                android:id="@+id/add"
                android:layout_height="wrap_content"
                android:background="@drawable/func_btn_style"
                android:textColor="#00b5e2"
                android:text="+"
                android:textSize="18sp"/>
 
            <Button
                android:id="@+id/equal"
                android:layout_height="wrap_content"
                android:background="@drawable/equals_button_style"
                android:textColor="#ffffff"
                app:layout_columnSpan="2"
                android:text="="
                android:textSize="18sp"/>
 
            <TextView
                android:id="@+id/T"
                android:layout_height="wrap_content"
                android:text="提示 : "
                app:layout_columnSpan="6"/>
 
            <TextView
                android:id="@+id/tip"
                android:layout_height="wrap_content"
                android:text="歡迎使用!"
                app:layout_columnSpan="6"/>
 
        </androidx.gridlayout.widget.GridLayout>
 
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

橫屏效果圖:

Java代碼如下:

package com.zjw;
 
import android.app.Activity;
import android.content.ClipboardManager;
import android.content.res.Configuration;
import android.graphics.Point;
import android.os.Bundle;
import android.text.Editable;
import android.text.method.KeyListener;
import android.util.Log;
import android.view.Display;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
 
import androidx.annotation.NonNull;
 
import java.math.BigDecimal;
import java.util.StringTokenizer;
 
 
public class MainActivity extends Activity {
 
    /**
     * 定義變量
     */
    //舍入精度
    public  static final  int[] DEF_DIV_SCALE = {17};
    //初始化顯示數據
    private final String[] init =new String[1];
    //顯示框
    private EditText input;// 用於顯示輸出結果
    //劃動條
    private SeekBar seekBar;
    //普通控件及變量
    private Button[] btn = new Button[10];// 0~9十個數字
    private TextView mem, _drg, tip;
    private Button div, mul, sub, add, equal, sin, cos, tan, log, ln, sqrt,
            square, factorial, bksp, left, right, dot, bd, db, drg, mc, c;
    public String str_old;
    public String str_new;
    public boolean vbegin = true;// 控制輸入,true為重新輸入,false為接著輸入
    public boolean drg_flag = true;// true為角度,false為弧度
    public double pi = 4 * Math.atan(1);// π值
    public boolean tip_lock = true;// true為正確,可以繼續輸入,false錯誤,輸入鎖定
    public boolean equals_flag = true;// 是否在按下=之後輸入,true為之前,false為之後
 
 
    //定義ContextMenu中每個菜單選項的Id
    final int Menu_1 = Menu.FIRST;
    final int Menu_2 = Menu.FIRST + 1;
    private ClipboardManager mClipboard = null;
 
 
    public boolean onCreateOptionsMenu(Menu menu) {
        //導入菜單佈局
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
 
 
    public boolean onOptionsItemSelected(MenuItem item) {
        //創建菜單項的點擊事件
        switch (item.getItemId()) {
            case R.id.menu_setting:
                Toast.makeText(this, "點擊瞭設置", Toast.LENGTH_SHORT).show();
 
                break;
            case R.id.menu_out:
//                Toast.makeText(this, "點擊瞭退出", Toast.LENGTH_SHORT).show();
                android.os.Process.killProcess(android.os.Process.myPid());//獲取PID
                System.exit(0);
                break;
 
            default:
                break;
        }
 
        return super.onOptionsItemSelected(item);
    }
 
 
    /**
     *onCreate
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //切換佈局後調用,初始化顯示
        if(savedInstanceState!=null){
            init[0] = savedInstanceState.getString("exp");
            equals_flag = false;
        }
        //屏幕方向監聽
        int orientation = getResources().getConfiguration().orientation;
 
        if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
            // 橫屏內容
            setContentView(R.layout.activity_main2);
            InitWigdet();
            AllWigdetListener();
        }
        else if (orientation == Configuration.ORIENTATION_PORTRAIT) {
            // 豎屏內容
            setContentView(R.layout.activity_main);
            input = (EditText)findViewById(R.id.textView);
            input.setText(init[0]);
            seekBar = (SeekBar) findViewById(R.id.seekBar);
            seekBar.setProgress(DEF_DIV_SCALE[0]);
            seekBar.setOnSeekBarChangeListener(onSeekBarChangeListener);
            Display defaultDisplay = getWindowManager().getDefaultDisplay();
            Point point = new Point();
            defaultDisplay.getSize(point);
            Integer x = point.x;
            Integer y = point.y;
 
            input.setKeyListener(new KeyListener() {
                @Override
                public int getInputType() {
                    return 0;
                }
 
                @Override
                public boolean onKeyDown(View view, Editable editable, int i, KeyEvent keyEvent) {
                    return false;
                }
 
                @Override
                public boolean onKeyUp(View view, Editable editable, int i, KeyEvent keyEvent) {
                    return false;
                }
 
                @Override
                public boolean onKeyOther(View view, Editable editable, KeyEvent keyEvent) {
                    return false;
                }
 
                @Override
                public void clearMetaKeyState(View view, Editable editable, int i) {
 
                }
            });
            View.OnClickListener onClearListener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    input.setText("");
                }
            };
            View.OnClickListener onClearLastListener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String s = input.getText().toString();
                    int len = s.length();
                    if(len>0) {
                        s = s.substring(0, len - 1);
                        input.setText(s);
                    }
                }
            };
            View.OnClickListener onEXPListener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Button temp = (Button)view;
                    String s = temp.getText().toString();
                    String show = input.getText().toString();
                    int len = show.length();
 
                    if(show.length()==0){
                        if(s.equals("+")||s.equals("×")||s.equals("÷")) return;
                    }
                    if((show.endsWith("+"))||(show.endsWith("-"))||(show.endsWith("×"))||(show.endsWith("÷"))||(show.endsWith("."))){
                        if(s.equals("+")||s.equals("×")||s.equals("÷")||s.equals("-")||(s.equals("."))){
                            show = show.substring(0,len-1) + s;
                            input.setText(show);
                        }else{
                            input.append(s);
                        }
                    }else{
                        input.append(s);
                    }
                }
            };
            View.OnClickListener onEXECListener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String s = input.getText().toString();
                    if(s.length()==0) return;
                    s = s.replace("×","*");
                    s = s.replace("÷","/");
                    s = s.replace("%","");
                    if((s.endsWith("+"))||(s.endsWith("-"))||(s.endsWith("*"))||(s.endsWith("/"))||(s.endsWith(".")))return;
 
                    try{
                        String re = Calculator.conversion(s);
                        re = round(re,DEF_DIV_SCALE[0]);
                        if(re.indexOf(".") > 0){
                            re = re.replaceAll("0+?$", "");//去掉多餘的0
                            re = re.replaceAll("[.]$", "");//如最後一位是.則去掉
                        }
                        input.setText(re);
                    }catch (Exception e){
                        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
                        input.setText("");
                    }
 
                }
            };
            View.OnClickListener onPERCENTCListener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String s = input.getText().toString();
                    if(s.length()==0) return;
                    s = s.replace("×","*");
                    s = s.replace("÷","/");
                    s = s.replace("%","");
                    if((s.endsWith("+"))||(s.endsWith("-"))||(s.endsWith("*"))||(s.endsWith("/"))||(s.endsWith("."))) return;
                    s = s+"/100";
 
                    try{
                        String re = Calculator.conversion(s);
                        re = round(re,DEF_DIV_SCALE[0]);
                        if(re.indexOf(".") > 0){
                            re = re.replaceAll("0+?$", "");//去掉多餘的0
                            re = re.replaceAll("[.]$", "");//如最後一位是.則去掉
                        }
                        input.setText(re+"%");
                    }catch (Exception e){
                        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
                        input.setText("");
                    }
 
                }
            };
            input.getLayoutParams().height = 2*y/7;
            Button button5 = (Button)findViewById(R.id.button5);    button5.getLayoutParams().width = x/4 ;button5.getLayoutParams().height = y/8;
            Button button6 = (Button)findViewById(R.id.button6);    button6.getLayoutParams().width = x/4 ;button6.getLayoutParams().height = y/8;
            Button button7 = (Button)findViewById(R.id.button7);    button7.getLayoutParams().width = x/4 ;button7.getLayoutParams().height = y/8;
            Button button8 = (Button)findViewById(R.id.button8);    button8.getLayoutParams().width = x/4 ;button8.getLayoutParams().height = y/8;
            Button button9 = (Button)findViewById(R.id.button9);    button9.getLayoutParams().width = x/4 ;button9.getLayoutParams().height = y/8;
            Button button10 = (Button)findViewById(R.id.button10);  button10.getLayoutParams().width = x/4 ;button10.getLayoutParams().height = y/8;
            Button button11 = (Button)findViewById(R.id.button11);  button11.getLayoutParams().width = x/4 ;button11.getLayoutParams().height = y/8;
            Button button12 = (Button)findViewById(R.id.button12);  button12.getLayoutParams().width = x/4 ;button12.getLayoutParams().height = y/8;
            Button button13 = (Button)findViewById(R.id.button13);  button13.getLayoutParams().width = x/4 ;button13.getLayoutParams().height = y/8;
            Button button14 = (Button)findViewById(R.id.button14);  button14.getLayoutParams().width = x/4 ;button14.getLayoutParams().height = y/8;
            Button button15 = (Button)findViewById(R.id.button15);  button15.getLayoutParams().width = x/4 ;button15.getLayoutParams().height = y/8;
            Button button16 = (Button)findViewById(R.id.button16);  button16.getLayoutParams().width = x/4 ;button16.getLayoutParams().height = y/8;
            Button button17 = (Button)findViewById(R.id.button17);  button17.getLayoutParams().width = x/4 ;button17.getLayoutParams().height = y/8;
            Button button18 = (Button)findViewById(R.id.button18);  button18.getLayoutParams().width = x/4 ;button18.getLayoutParams().height = y/8;
            Button button19 = (Button)findViewById(R.id.button19);  button19.getLayoutParams().width = x/4 ;button19.getLayoutParams().height = y/8;
            Button button20 = (Button)findViewById(R.id.button20);  button20.getLayoutParams().width = x/4 ;button20.getLayoutParams().height = 2*(y/8);
            Button button21 = (Button)findViewById(R.id.button21);  button21.getLayoutParams().width = x/4 ;button21.getLayoutParams().height = y/8;
            Button button22 = (Button)findViewById(R.id.button22);  button22.getLayoutParams().width = x/4 ;button22.getLayoutParams().height = y/8;
            Button button23 = (Button)findViewById(R.id.button23);  button23.getLayoutParams().width = x/4 ;button23.getLayoutParams().height = y/8;
 
            button6.setOnClickListener(onEXPListener);button7.setOnClickListener(onEXPListener);
            button9.setOnClickListener(onEXPListener);button10.setOnClickListener(onEXPListener);
            button11.setOnClickListener(onEXPListener);button12.setOnClickListener(onEXPListener);
            button13.setOnClickListener(onEXPListener);button14.setOnClickListener(onEXPListener);
            button15.setOnClickListener(onEXPListener);button16.setOnClickListener(onEXPListener);
            button17.setOnClickListener(onEXPListener);button18.setOnClickListener(onEXPListener);
            button19.setOnClickListener(onEXPListener);button21.setOnClickListener(onEXPListener);
            button22.setOnClickListener(onEXPListener);button23.setOnClickListener(onEXPListener);
            button5.setOnClickListener(onClearListener);
            button8.setOnClickListener(onClearLastListener);
            button20.setOnClickListener(onEXECListener);
            button21.setOnClickListener(onPERCENTCListener);
        }
    }
 
    /**
     * 初始化所有的組件
     */
    private void InitWigdet() {
        //獲取屏幕參數
        Display defaultDisplay = getWindowManager().getDefaultDisplay();
        Point point = new Point();
        defaultDisplay.getSize(point);
        Integer x = point.x;
        Integer y = point.y - 60;
        // 獲取界面元素
        input = (EditText) findViewById(R.id.input);
        input.setKeyListener(new KeyListener() {
            @Override
            public int getInputType() {
                return 0;
            }
 
            @Override
            public boolean onKeyDown(View view, Editable editable, int i, KeyEvent keyEvent) {
                return false;
            }
 
            @Override
            public boolean onKeyUp(View view, Editable editable, int i, KeyEvent keyEvent) {
                return false;
            }
 
            @Override
            public boolean onKeyOther(View view, Editable editable, KeyEvent keyEvent) {
                return false;
            }
 
            @Override
            public void clearMetaKeyState(View view, Editable editable, int i) {
 
            }
        });
        input.setText(init[0]);
 
        seekBar = (SeekBar) findViewById(R.id.seekBar); //seekBar.getLayoutParams().height = y/7/3;
        seekBar.setProgress(DEF_DIV_SCALE[0]);
        seekBar.setOnSeekBarChangeListener(onSeekBarChangeListener);
 
        input.getLayoutParams().height = y/9;
        mem = (TextView) findViewById(R.id.mem);
        tip = (TextView) findViewById(R.id.tip);
        _drg = (TextView) findViewById(R.id._drg); _drg.getLayoutParams().width = x/6 ;_drg.getLayoutParams().height = y/10-8;
        btn[0] = (Button) findViewById(R.id.zero); btn[0].getLayoutParams().width = x/6 ;btn[0].getLayoutParams().height = y/10;
        btn[1] = (Button) findViewById(R.id.one); btn[1].getLayoutParams().width = x/6 ;btn[1].getLayoutParams().height = y/10;
        btn[2] = (Button) findViewById(R.id.two); btn[2].getLayoutParams().width = x/6 ;btn[2].getLayoutParams().height = y/10;
        btn[3] = (Button) findViewById(R.id.three); btn[3].getLayoutParams().width = x/6 ;btn[3].getLayoutParams().height = y/10;
        btn[4] = (Button) findViewById(R.id.four); btn[4].getLayoutParams().width = x/6 ;btn[4].getLayoutParams().height = y/10;
        btn[5] = (Button) findViewById(R.id.five); btn[5].getLayoutParams().width = x/6 ;btn[5].getLayoutParams().height = y/10;
        btn[6] = (Button) findViewById(R.id.six); btn[6].getLayoutParams().width = x/6 ;btn[6].getLayoutParams().height = y/10;
        btn[7] = (Button) findViewById(R.id.seven); btn[7].getLayoutParams().width = x/6 ;btn[7].getLayoutParams().height = y/10;
        btn[8] = (Button) findViewById(R.id.eight); btn[8].getLayoutParams().width = x/6 ;btn[8].getLayoutParams().height = y/10;
        btn[9] = (Button) findViewById(R.id.nine); btn[9].getLayoutParams().width = x/6 ;btn[9].getLayoutParams().height = y/10;
        div = (Button) findViewById(R.id.divide); div.getLayoutParams().width = x/6 ;div.getLayoutParams().height = y/10;
        mul = (Button) findViewById(R.id.mul);mul.getLayoutParams().width = x/6 ;mul.getLayoutParams().height = y/10;
        sub = (Button) findViewById(R.id.sub); sub.getLayoutParams().width = x/6 ;sub.getLayoutParams().height = y/10;
        add = (Button) findViewById(R.id.add); add.getLayoutParams().width = x/6 ;add.getLayoutParams().height = y/10;
        equal = (Button) findViewById(R.id.equal); equal.getLayoutParams().width = 2*x/6 ;equal.getLayoutParams().height = y/10;
        sin = (Button) findViewById(R.id.sin); sin.getLayoutParams().width = x/6 ;sin.getLayoutParams().height = y/10-8;
        cos = (Button) findViewById(R.id.cos); cos.getLayoutParams().width = x/6 ;cos.getLayoutParams().height = y/10-8;
        tan = (Button) findViewById(R.id.tan); tan.getLayoutParams().width = x/6 ;tan.getLayoutParams().height = y/10-8;
        log = (Button) findViewById(R.id.log); log.getLayoutParams().width = x/6 ;log.getLayoutParams().height = y/10;
        ln = (Button) findViewById(R.id.ln); ln.getLayoutParams().width = x/6 ;ln.getLayoutParams().height = y/10;
        sqrt = (Button) findViewById(R.id.sqrt); sqrt.getLayoutParams().width = x/6 ;sqrt.getLayoutParams().height = y/10;
        square = (Button) findViewById(R.id.square); square.getLayoutParams().width = x/6 ;square.getLayoutParams().height = y/10;
        factorial = (Button) findViewById(R.id.factorial);factorial.getLayoutParams().width = x/6 ;factorial.getLayoutParams().height = y/10-8;
        bksp = (Button) findViewById(R.id.bksp);bksp.getLayoutParams().width = 2*x/6 ;bksp.getLayoutParams().height = y/10-8;
        left = (Button) findViewById(R.id.left); left.getLayoutParams().width = x/6 ;left.getLayoutParams().height = y/10;
        right = (Button) findViewById(R.id.right); right.getLayoutParams().width = x/6 ;right.getLayoutParams().height = y/10;
        dot = (Button) findViewById(R.id.dot);dot.getLayoutParams().width = x/6 ;dot.getLayoutParams().height = y/10;
        bd = (Button) findViewById(R.id.bd);
        LinearLayout linearLayout = (LinearLayout) findViewById(R.id.linear);linearLayout.getLayoutParams().width = x/6 ;linearLayout.getLayoutParams().height = y/10;
        db = (Button) findViewById(R.id.db);
 
        drg = (Button) findViewById(R.id.drg);drg.getLayoutParams().width = x/6 ;drg.getLayoutParams().height = y/10-8;
        mc = (Button) findViewById(R.id.mc); mc.getLayoutParams().width = 2*x/6 ;mc.getLayoutParams().height = y/10-8;
        c = (Button) findViewById(R.id.c); c.getLayoutParams().width = 2*x/6 ;c.getLayoutParams().height = y/10-8;
    }
 
    /**
     * 為所有按鍵綁定監聽器
     */
    private void AllWigdetListener() {
        // 數字鍵
        for (int i = 0; i < 10; i++) {
            btn[i].setOnClickListener(actionPerformed);
        }
        // 為+-x÷等按鍵綁定監聽器
        div.setOnClickListener(actionPerformed);
        mul.setOnClickListener(actionPerformed);
        sub.setOnClickListener(actionPerformed);
        add.setOnClickListener(actionPerformed);
        equal.setOnClickListener(actionPerformed);
        sin.setOnClickListener(actionPerformed);
        cos.setOnClickListener(actionPerformed);
        tan.setOnClickListener(actionPerformed);
        log.setOnClickListener(actionPerformed);
        ln.setOnClickListener(actionPerformed);
        sqrt.setOnClickListener(actionPerformed);
        square.setOnClickListener(actionPerformed);
        factorial.setOnClickListener(actionPerformed);
        bksp.setOnClickListener(actionPerformed);
        left.setOnClickListener(actionPerformed);
        right.setOnClickListener(actionPerformed);
        dot.setOnClickListener(actionPerformed);
        bd.setOnClickListener(actionPerformed);
        db.setOnClickListener(actionPerformed);
        drg.setOnClickListener(actionPerformed);
        mc.setOnClickListener(actionPerformed);
        c.setOnClickListener(actionPerformed);
    }
 
    /**
     * 鍵盤命令捕捉
     */
    String[] TipCommand = new String[500];
    int tip_i = 0;// TipCommand的指針
    private View.OnClickListener actionPerformed = new View.OnClickListener() {
 
        public void onClick(View v) {
            // 按鍵上的命令獲取
            String command = ((Button) v).getText().toString();
            // 顯示器上的字符串
            String str = input.getText().toString();
            // 檢測輸入是否合法
            if (equals_flag == false
                    && "0123456789.()sincostanlnlogn!+-×÷√^".indexOf(command) != -1) {
                // 檢測顯示器上的字符串是否合法
                if (right(str)) {
                    if ("+-×÷√^)".indexOf(command) != -1) {
                        for (int i = 0; i < str.length(); i++) {
                            TipCommand[tip_i] = String.valueOf(str.charAt(i));
                            tip_i++;
                        }
                        vbegin = false;
                    }
                } else {
                    input.setText("0");
                    vbegin = true;
                    tip_i = 0;
                    tip_lock = true;
                    tip.setText("welcome use the APP!");
                }
 
                equals_flag = true;
            }
            if (tip_i > 0)
                TipChecker(TipCommand[tip_i - 1], command);
            else if (tip_i == 0) {
                TipChecker("#", command);
            }
            if ("0123456789.()sincostanlnlogn!+-×÷√^".indexOf(command) != -1
                    && tip_lock) {
                TipCommand[tip_i] = command;
                tip_i++;
            }
            // 若輸入正確,則將輸入信息顯示到顯示器上
            if ("0123456789.()sincostanlnlogn!+-×÷√^".indexOf(command) != -1
                    && tip_lock) { // 共25個按鍵
                print(command);
                // 若果點擊瞭“DRG”,則切換當前弧度角度制,並將切換後的結果顯示到按鍵上方。
            } else if (command.compareTo("DRG") == 0 && tip_lock) {
                if (drg_flag == true) {
                    drg_flag = false;
                    _drg.setText("RAD");
                } else {
                    drg_flag = true;
                    _drg.setText("DEG");
                }
                // 如果輸入時退格鍵,並且是在按=之前
            } else if (command.compareTo("◁") == 0 && equals_flag) {
                // 一次刪除3個字符
                if (TTO(str) == 3) {
                    if (str.length() > 3)
                        input.setText(str.substring(0, str.length() - 3));
                    else if (str.length() == 3) {
                        input.setText("0");
                        vbegin = true;
                        tip_i = 0;
                        tip.setText("welcome use the APP!");
                    }
                    // 依次刪除2個字符
                } else if (TTO(str) == 2) {
                    if (str.length() > 2)
                        input.setText(str.substring(0, str.length() - 2));
                    else if (str.length() == 2) {
                        input.setText("0");
                        vbegin = true;
                        tip_i = 0;
                        tip.setText("welcome use the APP!");
                    }
                    // 依次刪除一個字符
                } else if (TTO(str) == 1) {
                    // 若之前輸入的字符串合法則刪除一個字符
                    if (right(str)) {
                        if (str.length() > 1)
                            input.setText(str.substring(0, str.length() - 1));
                        else if (str.length() == 1) {
                            input.setText("0");
                            vbegin = true;
                            tip_i = 0;
                            tip.setText("welcome use the APP!");
                        }
                        // 若之前輸入的字符串不合法則刪除全部字符
                    } else {
                        input.setText("0");
                        vbegin = true;
                        tip_i = 0;
                        tip.setText("welcome use the APP!");
                    }
                }
                if (input.getText().toString().compareTo("-") == 0
                        || equals_flag == false) {
                    input.setText("0");
                    vbegin = true;
                    tip_i = 0;
                    tip.setText("welcome use the APP!");
                }
                tip_lock = true;
                if (tip_i > 0)
                    tip_i--;
                // 如果是在按=之後輸入退格鍵
            } else if (command.compareTo("Bksp") == 0 && equals_flag == false) {
                // 將顯示器內容設置為0
                input.setText("0");
                vbegin = true;
                tip_i = 0;
                tip_lock = true;
                tip.setText("welcome use the APP!");
                // 如果輸入的是清除鍵
            } else if (command.compareTo("C") == 0) {
                // 將顯示器內容設置為0
                input.setText("0");
                // 重新輸入標志置為true
                vbegin = true;
                // 緩存命令位數清0
                tip_i = 0;
                // 表明可以繼續輸入
                tip_lock = true;
                // 表明輸入=之前
                equals_flag = true;
                tip.setText("welcome use the APP!");
                // 如果輸入的是”MC“,則將存儲器內容清0
            } else if (command.compareTo("MC") == 0) {
                mem.setText("0");
                // 如果按”bd“則轉換進制
            } else if (command.compareTo("B") == 0) {
                String s = input.getText().toString();
                s = s.replace(".","");
                //非法字符清屏
                if(".+-x÷√^sincostanloglnn!()".indexOf(s) != -1){
                    input.setText("0");
                }else
                {
                    try {
                        int a = Integer.valueOf(s);
                        String re = Integer.toBinaryString(a);
                        input.setText(re);
                    }catch (Exception e){
                        input.setText("");
                        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
                    }
 
                }
                // 如果按”db“則轉換進制
            }else if(command.compareTo("D") == 0){
                String s = input.getText().toString();
                s = s.replace(".","");
                input.setText("1234567890");
                //非法字符清屏
                if("23456789+-x÷√^sincostanloglnn!().".indexOf(s) != -1){
                    input.setText("0");
                }else{
                    try{
                        Integer re = Integer.parseInt(s,2);
                        input.setText(re.toString());
                    }catch (Exception e){
                        input.setText("");
                        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
                    }
                }
            } else if (command.compareTo("=") == 0 && tip_lock && right(str)
                    && equals_flag) {
                tip_i = 0;
                // 表明不可以繼續輸入
                tip_lock = false;
                // 表明輸入=之後
                equals_flag = false;
                // 保存原來算式樣子
                str_old = str;
                // 替換算式中的運算符,便於計算
                str = str.replaceAll("sin", "s");
                str = str.replaceAll("cos", "c");
                str = str.replaceAll("tan", "t");
                str = str.replaceAll("log", "g");
                str = str.replaceAll("ln", "l");
                str = str.replaceAll("n!", "!");
                // 重新輸入標志設置true
                vbegin = true;
                // 將-1x轉換成-
                str_new = str.replaceAll("-", "-1×");
                // 計算算式結果
                new calc().process(str_new);
            }
            // 表明可以繼續輸入
            tip_lock = true;
        }
    };
 
    /*
     * 檢測函數,對str進行前後語法檢測 為Tip的提示方式提供依據,與TipShow()配合使用 編號 字符 其後可以跟隨的合法字符 1 (
     * 數字|(|-|.|函數 2 ) 算符|)|√ ^ 3 . 數字|算符|)|√ ^ 4 數字 .|數字|算符|)|√ ^ 5 算符
     * 數字|(|.|函數 6 √ ^ ( |. | 數字 7 函數 數字|(|.
     *
     * 小數點前後均可省略,表示0 數字第一位可以為0
     */
    private void TipChecker(String tipcommand1, String tipcommand2) {
 
        // Tipcode1表示錯誤類型,Tipcode2表示名詞解釋類型
        int Tipcode1 = 0, Tipcode2 = 0;
        // 表示命令類型
        int tiptype1 = 0, tiptype2 = 0;
        // 括號數
        int bracket = 0;
        // “+-x÷√^”不能作為第一位
        if (tipcommand1.compareTo("#") == 0
                && (tipcommand2.compareTo("÷") == 0
                || tipcommand2.compareTo("×") == 0
                || tipcommand2.compareTo("+") == 0
                || tipcommand2.compareTo(")") == 0
                || tipcommand2.compareTo("√") == 0 || tipcommand2
                .compareTo("^") == 0)) {
            Tipcode1 = -1;
        }
        // 定義存儲字符串中最後一位的類型
        else if (tipcommand1.compareTo("#") != 0) {
            if (tipcommand1.compareTo("(") == 0) {
                tiptype1 = 1;
            } else if (tipcommand1.compareTo(")") == 0) {
                tiptype1 = 2;
            } else if (tipcommand1.compareTo(".") == 0) {
                tiptype1 = 3;
            } else if ("0123456789".indexOf(tipcommand1) != -1) {
                tiptype1 = 4;
            } else if ("+-×÷".indexOf(tipcommand1) != -1) {
                tiptype1 = 5;
            } else if ("√^".indexOf(tipcommand1) != -1) {
                tiptype1 = 6;
            } else if ("sincostanloglnn!".indexOf(tipcommand1) != -1) {
                tiptype1 = 7;
            }
            // 定義欲輸入的按鍵類型
            if (tipcommand2.compareTo("(") == 0) {
                tiptype2 = 1;
            } else if (tipcommand2.compareTo(")") == 0) {
                tiptype2 = 2;
            } else if (tipcommand2.compareTo(".") == 0) {
                tiptype2 = 3;
            } else if ("0123456789".indexOf(tipcommand2) != -1) {
                tiptype2 = 4;
            } else if ("+-×÷".indexOf(tipcommand2) != -1) {
                tiptype2 = 5;
            } else if ("√^".indexOf(tipcommand2) != -1) {
                tiptype2 = 6;
            } else if ("sincostanloglnn!".indexOf(tipcommand2) != -1) {
                tiptype2 = 7;
            }
 
            switch (tiptype1) {
                case 1:
                    // 左括號後面直接接右括號,“+x÷”(負號“-”不算),或者"√^"
                    if (tiptype2 == 2
                            || (tiptype2 == 5 && tipcommand2.compareTo("-") != 0)
                            || tiptype2 == 6)
                        Tipcode1 = 1;
                    break;
                case 2:
                    // 右括號後面接左括號,數字,“+-x÷sin^...”
                    if (tiptype2 == 1 || tiptype2 == 3 || tiptype2 == 4
                            || tiptype2 == 7)
                        Tipcode1 = 2;
                    break;
                case 3:
                    // “.”後面接左括號或者“sincos...”
                    if (tiptype2 == 1 || tiptype2 == 7)
                        Tipcode1 = 3;
                    // 連續輸入兩個“.”
                    if (tiptype2 == 3)
                        Tipcode1 = 8;
                    break;
                case 4:
                    // 數字後面直接接左括號或者“sincos...”
                    if (tiptype2 == 1 || tiptype2 == 7)
                        Tipcode1 = 4;
                    break;
                case 5:
                    // “+-x÷”後面直接接右括號,“+-x÷√^”
                    if (tiptype2 == 2 || tiptype2 == 5 || tiptype2 == 6)
                        Tipcode1 = 5;
                    break;
                case 6:
                    // “√^”後面直接接右括號,“+-x÷√^”以及“sincos...”
                    if (tiptype2 == 2 || tiptype2 == 5 || tiptype2 == 6
                            || tiptype2 == 7)
                        Tipcode1 = 6;
                    break;
                case 7:
                    // “sincos...”後面直接接右括號“+-x÷√^”以及“sincos...”
                    if (tiptype2 == 2 || tiptype2 == 5 || tiptype2 == 6
                            || tiptype2 == 7)
                        Tipcode1 = 7;
                    break;
            }
        }
        // 檢測小數點的重復性,Tipconde1=0,表明滿足前面的規則
        if (Tipcode1 == 0 && tipcommand2.compareTo(".") == 0) {
            int tip_point = 0;
            for (int i = 0; i < tip_i; i++) {
                // 若之前出現一個小數點點,則小數點計數加1
                if (TipCommand[i].compareTo(".") == 0) {
                    tip_point++;
                }
                // 若出現以下幾個運算符之一,小數點計數清零
                if (TipCommand[i].compareTo("sin") == 0
                        || TipCommand[i].compareTo("cos") == 0
                        || TipCommand[i].compareTo("tan") == 0
                        || TipCommand[i].compareTo("log") == 0
                        || TipCommand[i].compareTo("ln") == 0
                        || TipCommand[i].compareTo("n!") == 0
                        || TipCommand[i].compareTo("√") == 0
                        || TipCommand[i].compareTo("^") == 0
                        || TipCommand[i].compareTo("÷") == 0
                        || TipCommand[i].compareTo("×") == 0
                        || TipCommand[i].compareTo("-") == 0
                        || TipCommand[i].compareTo("+") == 0
                        || TipCommand[i].compareTo("(") == 0
                        || TipCommand[i].compareTo(")") == 0) {
                    tip_point = 0;
                }
            }
            tip_point++;
            // 若小數點計數大於1,表明小數點重復瞭
            if (tip_point > 1) {
                Tipcode1 = 8;
            }
        }
        // 檢測右括號是否匹配
        if (Tipcode1 == 0 && tipcommand2.compareTo(")") == 0) {
            int tip_right_bracket = 0;
            for (int i = 0; i < tip_i; i++) {
                // 如果出現一個左括號,則計數加1
                if (TipCommand[i].compareTo("(") == 0) {
                    tip_right_bracket++;
                }
                // 如果出現一個右括號,則計數減1
                if (TipCommand[i].compareTo(")") == 0) {
                    tip_right_bracket--;
                }
            }
            // 如果右括號計數=0,表明沒有響應的左括號與當前右括號匹配
            if (tip_right_bracket == 0) {
                Tipcode1 = 10;
            }
        }
        // 檢查輸入=的合法性
        if (Tipcode1 == 0 && tipcommand2.compareTo("=") == 0) {
            // 括號匹配數
            int tip_bracket = 0;
            for (int i = 0; i < tip_i; i++) {
                if (TipCommand[i].compareTo("(") == 0) {
                    tip_bracket++;
                }
                if (TipCommand[i].compareTo(")") == 0) {
                    tip_bracket--;
                }
            }
            // 若大於0,表明左括號還有未匹配的
            if (tip_bracket > 0) {
                Tipcode1 = 9;
                bracket = tip_bracket;
            } else if (tip_bracket == 0) {
                // 若前一個字符是以下之一,表明=號不合法
                if ("√^sincostanloglnn!".indexOf(tipcommand1) != -1) {
                    Tipcode1 = 6;
                }
                // 若前一個字符是以下之一,表明=號不合法
                if ("+-×÷".indexOf(tipcommand1) != -1) {
                    Tipcode1 = 5;
                }
            }
        }
        // 若命令式以下之一,則顯示相應的幫助信息
        if (tipcommand2.compareTo("MC") == 0)
            Tipcode2 = 1;
        if (tipcommand2.compareTo("C") == 0)
            Tipcode2 = 2;
        if (tipcommand2.compareTo("DRG") == 0)
            Tipcode2 = 3;
        if (tipcommand2.compareTo("Bksp") == 0)
            Tipcode2 = 4;
        if (tipcommand2.compareTo("sin") == 0)
            Tipcode2 = 5;
        if (tipcommand2.compareTo("cos") == 0)
            Tipcode2 = 6;
        if (tipcommand2.compareTo("tan") == 0)
            Tipcode2 = 7;
        if (tipcommand2.compareTo("log") == 0)
            Tipcode2 = 8;
        if (tipcommand2.compareTo("ln") == 0)
            Tipcode2 = 9;
        if (tipcommand2.compareTo("n!") == 0)
            Tipcode2 = 10;
        if (tipcommand2.compareTo("√") == 0)
            Tipcode2 = 11;
        if (tipcommand2.compareTo("^") == 0)
            Tipcode2 = 12;
        // 顯示幫助和錯誤信息
        TipShow(bracket, Tipcode1, Tipcode2, tipcommand1, tipcommand2);
 
    }
 
    /*
     * 反饋Tip信息,加強人機交互,與TipChecker()配合使用
     */
    private void TipShow(int bracket, int tipcode1, int tipcode2,String tipcommand1, String tipcommand2) {
 
        String tipmessage = "";
        if (tipcode1 != 0)
            tip_lock = false;// 表明輸入有誤
        switch (tipcode1) {
            case -1:
                tipmessage = tipcommand2 + "  不能作為第一個算符\n";
                break;
            case 1:
                tipmessage = tipcommand1 + "  後應輸入:數字/(/./-/函數 \n";
                break;
            case 2:
                tipmessage = tipcommand1 + "  後應輸入:)/算符 \n";
                break;
            case 3:
                tipmessage = tipcommand1 + "  後應輸入:)/數字/算符 \n";
                break;
            case 4:
                tipmessage = tipcommand1 + "  後應輸入:)/./數字 /算符 \n";
                break;
            case 5:
                tipmessage = tipcommand1 + "  後應輸入:(/./數字/函數 \n";
                break;
            case 6:
                tipmessage = tipcommand1 + "  後應輸入:(/./數字 \n";
                break;
            case 7:
                tipmessage = tipcommand1 + "  後應輸入:(/./數字 \n";
                break;
            case 8:
                tipmessage = "小數點重復\n";
                break;
            case 9:
                tipmessage = "不能計算,缺少 " + bracket + " 個 )";
                break;
            case 10:
                tipmessage = "不需要  )";
                break;
        }
        switch (tipcode2) {
            case 1:
                tipmessage = tipmessage + "[MC 用法: 清除記憶 MEM]";
                break;
            case 2:
                tipmessage = tipmessage + "[C 用法: 歸零]";
                break;
            case 3:
                tipmessage = tipmessage + "[DRG 用法: 選擇 DEG 或 RAD]";
                break;
            case 4:
                tipmessage = tipmessage + "[Bksp 用法: 退格]";
                break;
            case 5:
                tipmessage = tipmessage + "sin 函數用法示例:\n"
                        + "DEG:sin30 = 0.5      RAD:sin1 = 0.84\n"
                        + "註:與其他函數一起使用時要加括號,如:\n" + "sin(cos45),而不是sincos45";
                break;
            case 6:
                tipmessage = tipmessage + "cos 函數用法示例:\n"
                        + "DEG:cos60 = 0.5      RAD:cos1 = 0.54\n"
                        + "註:與其他函數一起使用時要加括號,如:\n" + "cos(sin45),而不是cossin45";
                break;
            case 7:
                tipmessage = tipmessage + "tan 函數用法示例:\n"
                        + "DEG:tan45 = 1      RAD:tan1 = 1.55\n"
                        + "註:與其他函數一起使用時要加括號,如:\n" + "tan(cos45),而不是tancos45";
                break;
            case 8:
                tipmessage = tipmessage + "log 函數用法示例:\n"
                        + "log10 = log(5+5) = 1\n" + "註:與其他函數一起使用時要加括號,如:\n"
                        + "log(tan45),而不是logtan45";
                break;
            case 9:
                tipmessage = tipmessage + "ln 函數用法示例:\n"
                        + "ln10 = le(5+5) = 2.3   lne = 1\n"
                        + "註:與其他函數一起使用時要加括號,如:\n" + "ln(tan45),而不是lntan45";
                break;
            case 10:
                tipmessage = tipmessage + "n! 函數用法示例:\n"
                        + "n!3 = n!(1+2) = 3×2×1 = 6\n" + "註:與其他函數一起使用時要加括號,如:\n"
                        + "n!(log1000),而不是n!log1000";
                break;
            case 11:
                tipmessage = tipmessage + "√ 用法示例:開任意次根號\n"
                        + "如:27開3次根為  27√3 = 3\n" + "註:與其他函數一起使用時要加括號,如:\n"
                        + "(函數)√(函數) , (n!3)√(log100) = 2.45";
                break;
            case 12:
                tipmessage = tipmessage + "^ 用法示例:開任意次平方\n" + "如:2的3次方為  2^3 = 8\n"
                        + "註:與其他函數一起使用時要加括號,如:\n"
                        + "(函數)√(函數) , (n!3)^(log100) = 36";
                break;
        }
        // 將提示信息顯示到tip
        tip.setText(tipmessage);
    }
 
    /**
     * 將信息顯示在顯示屏上
     */
    private void print(String str) {
        // 清屏後輸出
        if (vbegin) {
            input.setText(str);
        } else {
            input.append(str);
        }
        vbegin = false;
    }
 
    /*
     * 檢測函數,返回值為3、2、1 表示應當一次刪除幾個? Three+Two+One = TTO 為Bksp按鈕的刪除方式提供依據
     * 返回3,表示str尾部為sin、cos、tan、log中的一個,應當一次刪除3個 返回2,表示str尾部為ln、n!中的一個,應當一次刪除2個
     * 返回1,表示為除返回3、2外的所有情況,隻需刪除一個(包含非法字符時要另外考慮:應清屏)
     */
    private int TTO(String str) {
        if ((str.charAt(str.length() - 1) == 'n'
                && str.charAt(str.length() - 2) == 'i' && str.charAt(str
                .length() - 3) == 's')
                || (str.charAt(str.length() - 1) == 's'
                && str.charAt(str.length() - 2) == 'o' && str
                .charAt(str.length() - 3) == 'c')
                || (str.charAt(str.length() - 1) == 'n'
                && str.charAt(str.length() - 2) == 'a' && str
                .charAt(str.length() - 3) == 't')
                || (str.charAt(str.length() - 1) == 'g'
                && str.charAt(str.length() - 2) == 'o' && str
                .charAt(str.length() - 3) == 'l')) {
            return 3;
        } else if ((str.charAt(str.length() - 1) == 'n' && str.charAt(str
                .length() - 2) == 'l')
                || (str.charAt(str.length() - 1) == '!' && str.charAt(str
                .length() - 2) == 'n')) {
            return 2;
        } else {
            return 1;
        }
    }
 
    /*
     * 判斷一個str是否是合法的,返回值為true、false
     * 隻包含0123456789.()sincostanlnlogn!+-×÷√^的是合法的str,返回true
     * 包含瞭除0123456789.()sincostanlnlogn!+-×÷√^以外的字符的str為非法的,返回false
     */
    private boolean right(String str) {
        int i = 0;
        for (i = 0; i < str.length(); i++) {
            if (str.charAt(i) != '0' && str.charAt(i) != '1'
                    && str.charAt(i) != '2' && str.charAt(i) != '3'
                    && str.charAt(i) != '4' && str.charAt(i) != '5'
                    && str.charAt(i) != '6' && str.charAt(i) != '7'
                    && str.charAt(i) != '8' && str.charAt(i) != '9'
                    && str.charAt(i) != '.' && str.charAt(i) != '-'
                    && str.charAt(i) != '+' && str.charAt(i) != '×'
                    && str.charAt(i) != '÷' && str.charAt(i) != '√'
                    && str.charAt(i) != '^' && str.charAt(i) != 's'
                    && str.charAt(i) != 'i' && str.charAt(i) != 'n'
                    && str.charAt(i) != 'c' && str.charAt(i) != 'o'
                    && str.charAt(i) != 't' && str.charAt(i) != 'a'
                    && str.charAt(i) != 'l' && str.charAt(i) != 'g'
                    && str.charAt(i) != '(' && str.charAt(i) != ')'
                    && str.charAt(i) != '!')
                break;
        }
        if (i == str.length()) {
            return true;
        } else {
            return false;
        }
    }
 
    /*
     * 整個計算核心,
     * 隻要將表達式的整個字符串傳入calc().process()就可以實行計算瞭 算法包括以下幾部分:
     *  1、計算部分
     * process(String str) 當然,這是建立在查錯無錯誤的情況下
     * 2、數據格式化 FP(double n) 使數據有相當的精確度
     * 3、階乘算法 N(double n) 計算n!,將結果返回
     *  4、錯誤提示 showError(int code ,String str)
     * 將錯誤返回
     */
    public class calc {
 
        public calc() {
 
        }
 
        final int MAXLEN = 500;
 
        /*
         * 計算表達式 從左向右掃描,數字入number棧,運算符入operator棧
         * +-基本優先級為1,
         * ×÷基本優先級為2,
         * log ln sin cos tan n!基本優先級為3,
         * √^基本優先級為4
         * 括號內層運算符比外層同級運算符優先級高4
         * 當前運算符優先級高於棧頂壓棧,
         * 低於棧頂彈出一個運算符與兩個數進行運算
         *  重復直到當前運算符大於棧頂
         *   掃描完後對剩下的運算符與數字依次計算
         */
        public void process(String str) {
            int weightPlus = 0, topOp = 0, topNum = 0, flag = 1, weightTemp = 0;
            // weightPlus為同一()下的基本優先級,weightTemp臨時記錄優先級的變化
            // topOp為weight[],operator[]的計數器;topNum為number[]的計數器
            // flag為正負數的計數器,1為正數,-1為負數
            int weight[]; // 保存operator棧中運算符的優先級,以topOp計數
            double number[]; // 保存數字,以topNum計數
            char ch, ch_gai, operator[];// operator[]保存運算符,以topOp計數
            String num;// 記錄數字,str以+-×÷()sctgl!√^分段,+-×÷()sctgl!√^字符之間的字符串即為數字
            weight = new int[MAXLEN];
            number = new double[MAXLEN];
            operator = new char[MAXLEN];
            String expression = str;
            StringTokenizer expToken = new StringTokenizer(expression,
                    "+-×÷()sctgl!√^");
            int i = 0;
            while (i < expression.length()) {
                ch = expression.charAt(i);
                // 判斷正負數
                if (i == 0) {
                    if (ch == '-')
                        flag = -1;
                } else if (expression.charAt(i - 1) == '(' && ch == '-')
                    flag = -1;
                // 取得數字,並將正負符號轉移給數字
                if (ch <= '9' && ch >= '0' || ch == '.' || ch == 'E') {
                    num = expToken.nextToken();
                    ch_gai = ch;
                    Log.e("guojs", ch + "--->" + i);
                    // 取得整個數字
                    while (i < expression.length()
                            && (ch_gai <= '9' && ch_gai >= '0' || ch_gai == '.' || ch_gai == 'E')) {
                        ch_gai = expression.charAt(i++);
                        Log.e("guojs", "i的值為:" + i);
                    }
                    // 將指針退回之前的位置
                    if (i >= expression.length())
                        i -= 1;
                    else {
                        i -= 2;
                    }
                    if (num.compareTo(".") == 0)
                        number[topNum++] = 0;
                        // 將正負符號轉移給數字
                    else {
                        number[topNum++] = Double.parseDouble(num) * flag;
                        flag = 1;
                    }
                }
                // 計算運算符的優先級
                if (ch == '(')
                    weightPlus += 4;
                if (ch == ')')
                    weightPlus -= 4;
                if (ch == '-' && flag == 1 || ch == '+' || ch == '×'
                        || ch == '÷' || ch == 's' || ch == 'c' || ch == 't'
                        || ch == 'g' || ch == 'l' || ch == '!' || ch == '√'
                        || ch == '^') {
                    switch (ch) {
                        // +-的優先級最低,為1
                        case '+':
                        case '-':
                            weightTemp = 1 + weightPlus;
                            break;
                        // x÷的優先級稍高,為2
                        case '×':
                        case '÷':
                            weightTemp = 2 + weightPlus;
                            break;
                        // sincos之類優先級為3
                        case 's':
                        case 'c':
                        case 't':
                        case 'g':
                        case 'l':
                        case '!':
                            weightTemp = 3 + weightPlus;
                            break;
                        // 其餘優先級為4
                        // case '^':
                        // case '√':
                        default:
                            weightTemp = 4 + weightPlus;
                            break;
                    }
                    // 如果當前優先級大於堆棧頂部元素,則直接入棧
                    if (topOp == 0 || weight[topOp - 1] < weightTemp) {
                        weight[topOp] = weightTemp;
                        operator[topOp] = ch;
                        topOp++;
                        // 否則將堆棧中運算符逐個取出,直到當前堆棧頂部運算符的優先級小於當前運算符
                    } else {
                        while (topOp > 0 && weight[topOp - 1] >= weightTemp) {
                            switch (operator[topOp - 1]) {
                                // 取出數字數組的相應元素進行運算
                                case '+':
                                    number[topNum - 2] += number[topNum - 1];
                                    break;
                                case '-':
                                    number[topNum - 2] -= number[topNum - 1];
                                    break;
                                case '×':
                                    number[topNum - 2] *= number[topNum - 1];
                                    break;
                                // 判斷除數為0的情況
                                case '÷':
                                    if (number[topNum - 1] == 0) {
                                        showError(1, str_old);
                                        return;
                                    }
                                    number[topNum - 2] /= number[topNum - 1];
                                    break;
                                case '√':
                                    if (number[topNum - 1] == 0
                                            || (number[topNum - 2] < 0 && number[topNum - 1] % 2 == 0)) {
                                        showError(2, str_old);
                                        return;
                                    }
                                    number[topNum - 2] = Math.pow(
                                            number[topNum - 2],
                                            1 / number[topNum - 1]);
                                    break;
                                case '^':
                                    number[topNum - 2] = Math.pow(
                                            number[topNum - 2], number[topNum - 1]);
                                    break;
                                // 計算時進行角度弧度的判斷及轉換
                                // sin
                                case 's':
                                    if (drg_flag == true) {
                                        number[topNum - 1] = Math
                                                .sin((number[topNum - 1] / 180)
                                                        * pi);
                                    } else {
                                        number[topNum - 1] = Math
                                                .sin(number[topNum - 1]);
                                    }
                                    topNum++;
                                    break;
                                // cos
                                case 'c':
                                    if (drg_flag == true) {
                                        number[topNum - 1] = Math
                                                .cos((number[topNum - 1] / 180)
                                                        * pi);
                                    } else {
                                        number[topNum - 1] = Math
                                                .cos(number[topNum - 1]);
                                    }
                                    topNum++;
                                    break;
                                // tan
                                case 't':
                                    if (drg_flag == true) {
                                        if ((Math.abs(number[topNum - 1]) / 90) % 2 == 1) {
                                            showError(2, str_old);
                                            return;
                                        }
                                        number[topNum - 1] = Math
                                                .tan((number[topNum - 1] / 180)
                                                        * pi);
                                    } else {
                                        if ((Math.abs(number[topNum - 1]) / (pi / 2)) % 2 == 1) {
                                            showError(2, str_old);
                                            return;
                                        }
                                        number[topNum - 1] = Math
                                                .tan(number[topNum - 1]);
                                    }
                                    topNum++;
                                    break;
                                // log
                                case 'g':
                                    if (number[topNum - 1] <= 0) {
                                        showError(2, str_old);
                                        return;
                                    }
                                    number[topNum - 1] = Math
                                            .log10(number[topNum - 1]);
                                    topNum++;
                                    break;
                                // ln
                                case 'l':
                                    if (number[topNum - 1] <= 0) {
                                        showError(2, str_old);
                                        return;
                                    }
                                    number[topNum - 1] = Math
                                            .log(number[topNum - 1]);
                                    topNum++;
                                    break;
                                // 階乘
                                case '!':
                                    if (number[topNum - 1] > 170) {
                                        showError(3, str_old);
                                        return;
                                    } else if (number[topNum - 1] < 0) {
                                        showError(2, str_old);
                                        return;
                                    }
                                    number[topNum - 1] = N(number[topNum - 1]);
                                    topNum++;
                                    break;
                            }
                            // 繼續取堆棧的下一個元素進行判斷
                            topNum--;
                            topOp--;
                        }
                        // 將運算符如堆棧
                        weight[topOp] = weightTemp;
                        operator[topOp] = ch;
                        topOp++;
                    }
                }
                i++;
            }
            // 依次取出堆棧的運算符進行運算
            while (topOp > 0) {
                // +-x直接將數組的後兩位數取出運算
                switch (operator[topOp - 1]) {
                    case '+':
                        number[topNum - 2] += number[topNum - 1];
                        break;
                    case '-':
                        number[topNum - 2] -= number[topNum - 1];
                        break;
                    case '×':
                        number[topNum - 2] *= number[topNum - 1];
                        break;
                    // 涉及到除法時要考慮除數不能為零的情況
                    case '÷':
                        if (number[topNum - 1] == 0) {
                            showError(1, str_old);
                            return;
                        }
                        number[topNum - 2] /= number[topNum - 1];
                        break;
                    case '√':
                        if (number[topNum - 1] == 0
                                || (number[topNum - 2] < 0 && number[topNum - 1] % 2 == 0)) {
                            showError(2, str_old);
                            return;
                        }
                        number[topNum - 2] = Math.pow(number[topNum - 2],
                                1 / number[topNum - 1]);
                        break;
                    case '^':
                        number[topNum - 2] = Math.pow(number[topNum - 2],
                                number[topNum - 1]);
                        break;
                    // sin
                    case 's':
                        if (drg_flag == true) {
                            number[topNum - 1] = Math
                                    .sin((number[topNum - 1] / 180) * pi);
                        } else {
                            number[topNum - 1] = Math.sin(number[topNum - 1]);
                        }
                        topNum++;
                        break;
                    // cos
                    case 'c':
                        if (drg_flag == true) {
                            number[topNum - 1] = Math
                                    .cos((number[topNum - 1] / 180) * pi);
                        } else {
                            number[topNum - 1] = Math.cos(number[topNum - 1]);
                        }
                        topNum++;
                        break;
                    // tan
                    case 't':
                        if (drg_flag == true) {
                            if ((Math.abs(number[topNum - 1]) / 90) % 2 == 1) {
                                showError(2, str_old);
                                return;
                            }
                            number[topNum - 1] = Math
                                    .tan((number[topNum - 1] / 180) * pi);
                        } else {
                            if ((Math.abs(number[topNum - 1]) / (pi / 2)) % 2 == 1) {
                                showError(2, str_old);
                                return;
                            }
                            number[topNum - 1] = Math.tan(number[topNum - 1]);
                        }
                        topNum++;
                        break;
                    // 對數log
                    case 'g':
                        if (number[topNum - 1] <= 0) {
                            showError(2, str_old);
                            return;
                        }
                        number[topNum - 1] = Math.log10(number[topNum - 1]);
                        topNum++;
                        break;
                    // 自然對數ln
                    case 'l':
                        if (number[topNum - 1] <= 0) {
                            showError(2, str_old);
                            return;
                        }
                        number[topNum - 1] = Math.log(number[topNum - 1]);
                        topNum++;
                        break;
                    // 階乘
                    case '!':
                        if (number[topNum - 1] > 170) {
                            showError(3, str_old);
                            return;
                        } else if (number[topNum - 1] < 0) {
                            showError(2, str_old);
                            return;
                        }
                        number[topNum - 1] = N(number[topNum - 1]);
                        topNum++;
                        break;
                }
                // 取堆棧下一個元素計算
                topNum--;
                topOp--;
            }
            // 如果是數字太大,提示錯誤信息
            if (number[0] > 7.3E306) {
                showError(3, str_old);
                return;
            }
            // 輸出最終結果
            input.setText(String.valueOf(FP(number[0])));
            tip.setText("計算完畢,要繼續請按歸零鍵 C");
            mem.setText(str_old + "=" + String.valueOf(FP(number[0])));
        }
 
        /*
         * FP = floating point 控制小數位數,達到精度 否則會出現
         * 0.6-0.2=0.39999999999999997的情況,用FP即可解決,使得數為0.4 本格式精度為15位
         */
        public double FP(double n) {
            // NumberFormat format=NumberFormat.getInstance(); //創建一個格式化類f
            // format.setMaximumFractionDigits(18); //設置小數位的格式
//            DecimalFormat format = new DecimalFormat("0.#############");
            Double re = n;
            String s = round(re.toString(),DEF_DIV_SCALE[0]);
            return Double.parseDouble(s);
        }
 
        /*
         * 階乘算法
         */
        public double N(double n) {
            int i = 0;
            double sum = 1;
            // 依次將小於等於n的值相乘
            for (i = 1; i <= n; i++) {
                sum = sum * i;
            }
            return sum;
        }
 
        /*
         * 錯誤提示,按瞭"="之後,若計算式在process()過程中,出現錯誤,則進行提示
         */
        public void showError(int code, String str) {
            String message = "";
            switch (code) {
                case 1:
                    message = "零不能作除數";
                    break;
                case 2:
                    message = "函數格式錯誤";
                    break;
                case 3:
                    message = "值太大瞭,超出范圍";
            }
            input.setText("\"" + str + "\"" + ": " + message);
            tip.setText(message + "\n" + "計算完畢,要繼續請按歸零鍵 C");
        }
    }
 
    /**
     *保存切換頁面時EditEext中的值
     */
    @Override   //這種方式保存數據隻是臨時保存,無法永久保存
    protected void onSaveInstanceState(@NonNull Bundle outState) {  //該函數用於提取出歷史數據,保存到outState中
        super.onSaveInstanceState(outState);
        init[0] = input.getText().toString();
        outState.putString("exp",init[0]);
    }
 
    /**
     *舍入精度
     */
    public static String round(String v, int scale) {
        if (scale < 0) {
            throw new IllegalArgumentException(
                    "The scale must be a positive integer or zero");
        }
        BigDecimal b = new BigDecimal(v);
        BigDecimal one = new BigDecimal("1");
 
        BigDecimal re = b.divide(one, scale, BigDecimal.ROUND_HALF_UP);
 
        return re.toString();
    }
 
//    @Override
//    public boolean onCreateOptionsMenu(Menu menu) {
//        // Inflate the menu; this adds items to the action bar if it is present.
//        getMenuInflater().inflate(R.menu.main, menu);
//        return true;
//    }
 
    /**
     *音量鍵事件
     */
    @Override
    public boolean onKeyDown (int keyCode, KeyEvent event) {
 
        String s = input.getText().toString();
        if(s.length()<1){
 
        }else {
            switch (keyCode) {
                // 音量減小
                case KeyEvent.KEYCODE_VOLUME_DOWN:
                    if(DEF_DIV_SCALE[0]>1)
                        DEF_DIV_SCALE[0]--;
                    seekBar.setProgress(DEF_DIV_SCALE[0]);
                    Toast.makeText(this.getApplicationContext(), "DOWN " + DEF_DIV_SCALE[0], Toast.LENGTH_SHORT).show();
                    if(s.contains(".")) input.setText(round(s,DEF_DIV_SCALE[0]));
                    // 音量減小時應該執行的功能代碼
                    return true;
 
                // 音量增大
                case KeyEvent.KEYCODE_VOLUME_UP:
                    if(DEF_DIV_SCALE[0]<40)
                        DEF_DIV_SCALE[0]++;
                    seekBar.setProgress(DEF_DIV_SCALE[0]);
                    Toast.makeText(this.getApplicationContext(), "UP " + DEF_DIV_SCALE[0], Toast.LENGTH_SHORT).show();
                    if(s.contains(".")) input.setText(round(s,DEF_DIV_SCALE[0]));
                    // 音量增大時應該執行的功能代碼
                    return true;
            }
        }
        return super.onKeyDown (keyCode, event);
    }
 
    /**
     * 滑動條事件
     */
    public SeekBar.OnSeekBarChangeListener onSeekBarChangeListener = new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            //txt_cur.setText("當前進度值:" + progress + "  / 100 ");
            String s = input.getText().toString();
            if(s.length()<1){
                return;
            }else{
                if(progress>DEF_DIV_SCALE[0]){
                    DEF_DIV_SCALE[0] = progress;
                    Toast.makeText(getApplicationContext(), "UP " + DEF_DIV_SCALE[0], Toast.LENGTH_SHORT).show();
                    if(s.contains(".")) input.setText(round(s,DEF_DIV_SCALE[0]));
                }else if(progress<DEF_DIV_SCALE[0]){
                    DEF_DIV_SCALE[0] = progress;
                    Toast.makeText(getApplicationContext(), "DOWN " + DEF_DIV_SCALE[0], Toast.LENGTH_SHORT).show();
                    if(s.contains(".")) input.setText(round(s,DEF_DIV_SCALE[0]));
                }
            }
        }
 
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            //Toast.makeText(mContext, "觸碰SeekBar", Toast.LENGTH_SHORT).show();
        }
 
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            //Toast.makeText(mContext, "放開SeekBar", Toast.LENGTH_SHORT).show();
        }
    };
 
    /**
     * 二進制2十進制
     */
    public int BinaryToDecimal(String s){
        int binaryNumber = Integer.valueOf(s);
        int decimal = 0;
        int p = 0;
        while(true){
            if(binaryNumber == 0){
                break;
            } else {
                int temp = binaryNumber%10;
                decimal += temp*Math.pow(2, p);
                binaryNumber = binaryNumber/10;
                p++;
            }
        }
        return decimal;
    }
 
    /**
     *十進制2二進制
     */
 
 
}

以上就是本文的全部內容,希望對大傢的學習有所幫助,也希望大傢多多支持WalkonNet。