Android實現簡單的加載進度條
本文實例為大傢分享瞭Android實現簡單的加載進度條的具體代碼,供大傢參考,具體內容如下
1.效果圖
2.自定義progressBar
package com.example.myapplication7; import android.animation.ValueAnimator; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.RectF; import android.os.Bundle; import android.os.Parcelable; import android.util.AttributeSet; import android.view.animation.AccelerateDecelerateInterpolator; import android.widget.ProgressBar; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import androidx.annotation.IntDef; public class CircleProgressView extends ProgressBar { private int mReachBarSize = Utils.dp2px(getContext(), 2); // 未完成進度條大小 private int mNormalBarSize = Utils.dp2px(getContext(), 2); // 未完成進度條大小 private int mReachBarColor = Color.parseColor("#108ee9"); // 已完成進度顏色 private int mNormalBarColor = Color.parseColor("#FFD3D6DA"); // 未完成進度顏色 private int mTextSize = Utils.sp2px(getContext(), 14); // 進度值字體大小 private int mTextColor = Color.parseColor("#108ee9"); // 進度的值字體顏色 private float mTextSkewX; // 進度值字體傾斜角度 private String mTextSuffix = "%"; // 進度值前綴 private String mTextPrefix = ""; // 進度值後綴 private boolean mTextVisible = true; // 是否顯示進度值 private boolean mReachCapRound; // 畫筆是否使用圓角邊界,normalStyle下生效 private int mRadius = Utils.dp2px(getContext(), 20); // 半徑 private int mStartArc; // 起始角度 private int mInnerBackgroundColor; // 內部背景填充顏色 private int mProgressStyle = ProgressStyle.NORMAL; // 進度風格 private int mInnerPadding = Utils.dp2px(getContext(), 1); // 內部圓與外部圓間距 private int mOuterColor; // 外部圓環顏色 private boolean needDrawInnerBackground; // 是否需要繪制內部背景 private RectF rectF; // 外部圓環繪制區域 private RectF rectInner; // 內部圓環繪制區域 private int mOuterSize = Utils.dp2px(getContext(), 1); // 外層圓環寬度 private Paint mTextPaint; // 繪制進度值字體畫筆 private Paint mNormalPaint; // 繪制未完成進度畫筆 private Paint mReachPaint; // 繪制已完成進度畫筆 private Paint mInnerBackgroundPaint; // 內部背景畫筆 private Paint mOutPaint; // 外部圓環畫筆 private int mRealWidth; private int mRealHeight; @IntDef({ProgressStyle.NORMAL, ProgressStyle.FILL_IN, ProgressStyle.FILL_IN_ARC}) @Retention(RetentionPolicy.SOURCE) public @interface ProgressStyle { int NORMAL = 0; int FILL_IN = 1; int FILL_IN_ARC = 2; } public CircleProgressView(Context context) { this(context, null); } public CircleProgressView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CircleProgressView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); obtainAttributes(attrs); initPaint(); } private void initPaint() { mTextPaint = new Paint(); mTextPaint.setColor(mTextColor); mTextPaint.setStyle(Paint.Style.FILL); mTextPaint.setTextSize(mTextSize); mTextPaint.setTextSkewX(mTextSkewX); mTextPaint.setAntiAlias(true); mNormalPaint = new Paint(); mNormalPaint.setColor(mNormalBarColor); mNormalPaint.setStyle(mProgressStyle == ProgressStyle.FILL_IN_ARC ? Paint.Style.FILL : Paint.Style.STROKE); mNormalPaint.setAntiAlias(true); mNormalPaint.setStrokeWidth(mNormalBarSize); mReachPaint = new Paint(); mReachPaint.setColor(mReachBarColor); mReachPaint.setStyle(mProgressStyle == ProgressStyle.FILL_IN_ARC ? Paint.Style.FILL : Paint.Style.STROKE); mReachPaint.setAntiAlias(true); mReachPaint.setStrokeCap(mReachCapRound ? Paint.Cap.ROUND : Paint.Cap.BUTT); mReachPaint.setStrokeWidth(mReachBarSize); if (needDrawInnerBackground) { mInnerBackgroundPaint = new Paint(); mInnerBackgroundPaint.setStyle(Paint.Style.FILL); mInnerBackgroundPaint.setAntiAlias(true); mInnerBackgroundPaint.setColor(mInnerBackgroundColor); } if (mProgressStyle == ProgressStyle.FILL_IN_ARC) { mOutPaint = new Paint(); mOutPaint.setStyle(Paint.Style.STROKE); mOutPaint.setColor(mOuterColor); mOutPaint.setStrokeWidth(mOuterSize); mOutPaint.setAntiAlias(true); } } private void obtainAttributes(AttributeSet attrs) { TypedArray ta = getContext().obtainStyledAttributes(attrs, R.styleable.CircleProgressView); mProgressStyle = ta.getInt(R.styleable.CircleProgressView_cpv_progressStyle, ProgressStyle.NORMAL); // 獲取三種風格通用的屬性 mNormalBarSize = (int) ta.getDimension(R.styleable.CircleProgressView_cpv_progressNormalSize, mNormalBarSize); mNormalBarColor = ta.getColor(R.styleable.CircleProgressView_cpv_progressNormalColor, mNormalBarColor); mReachBarSize = (int) ta.getDimension(R.styleable.CircleProgressView_cpv_progressReachSize, mReachBarSize); mReachBarColor = ta.getColor(R.styleable.CircleProgressView_cpv_progressReachColor, mReachBarColor); mTextSize = (int) ta.getDimension(R.styleable.CircleProgressView_cpv_progressTextSize, mTextSize); mTextColor = ta.getColor(R.styleable.CircleProgressView_cpv_progressTextColor, mTextColor); mTextSkewX = ta.getDimension(R.styleable.CircleProgressView_cpv_progressTextSkewX, 0); if (ta.hasValue(R.styleable.CircleProgressView_cpv_progressTextSuffix)) { mTextSuffix = ta.getString(R.styleable.CircleProgressView_cpv_progressTextSuffix); } if (ta.hasValue(R.styleable.CircleProgressView_cpv_progressTextPrefix)) { mTextPrefix = ta.getString(R.styleable.CircleProgressView_cpv_progressTextPrefix); } mTextVisible = ta.getBoolean(R.styleable.CircleProgressView_cpv_progressTextVisible, mTextVisible); mRadius = (int) ta.getDimension(R.styleable.CircleProgressView_cpv_radius, mRadius); rectF = new RectF(-mRadius, -mRadius, mRadius, mRadius); switch (mProgressStyle) { case ProgressStyle.FILL_IN: mReachBarSize = 0; mNormalBarSize = 0; mOuterSize = 0; break; case ProgressStyle.FILL_IN_ARC: mStartArc = ta.getInt(R.styleable.CircleProgressView_cpv_progressStartArc, 0) + 270; mInnerPadding = (int) ta.getDimension(R.styleable.CircleProgressView_cpv_innerPadding, mInnerPadding); mOuterColor = ta.getColor(R.styleable.CircleProgressView_cpv_outerColor, mReachBarColor); mOuterSize = (int) ta.getDimension(R.styleable.CircleProgressView_cpv_outerSize, mOuterSize); mReachBarSize = 0;// 將畫筆大小重置為0 mNormalBarSize = 0; if (!ta.hasValue(R.styleable.CircleProgressView_cpv_progressNormalColor)) { mNormalBarColor = Color.TRANSPARENT; } int mInnerRadius = mRadius - mOuterSize / 2 - mInnerPadding; rectInner = new RectF(-mInnerRadius, -mInnerRadius, mInnerRadius, mInnerRadius); break; case ProgressStyle.NORMAL: mReachCapRound = ta.getBoolean(R.styleable.CircleProgressView_cpv_reachCapRound, true); mStartArc = ta.getInt(R.styleable.CircleProgressView_cpv_progressStartArc, 0) + 270; if (ta.hasValue(R.styleable.CircleProgressView_cpv_innerBackgroundColor)) { mInnerBackgroundColor = ta.getColor(R.styleable.CircleProgressView_cpv_innerBackgroundColor, Color.argb(0, 0, 0, 0)); needDrawInnerBackground = true; } break; } ta.recycle(); } @Override protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int maxBarPaintWidth = Math.max(mReachBarSize, mNormalBarSize); int maxPaintWidth = Math.max(maxBarPaintWidth, mOuterSize); int height = 0; int width = 0; switch (mProgressStyle) { case ProgressStyle.FILL_IN: height = getPaddingTop() + getPaddingBottom() // 邊距 + Math.abs(mRadius * 2); // 直徑 width = getPaddingLeft() + getPaddingRight() // 邊距 + Math.abs(mRadius * 2); // 直徑 break; case ProgressStyle.FILL_IN_ARC: height = getPaddingTop() + getPaddingBottom() // 邊距 + Math.abs(mRadius * 2) // 直徑 + maxPaintWidth;// 邊框 width = getPaddingLeft() + getPaddingRight() // 邊距 + Math.abs(mRadius * 2) // 直徑 + maxPaintWidth;// 邊框 break; case ProgressStyle.NORMAL: height = getPaddingTop() + getPaddingBottom() // 邊距 + Math.abs(mRadius * 2) // 直徑 + maxBarPaintWidth;// 邊框 width = getPaddingLeft() + getPaddingRight() // 邊距 + Math.abs(mRadius * 2) // 直徑 + maxBarPaintWidth;// 邊框 break; } mRealWidth = resolveSize(width, widthMeasureSpec); mRealHeight = resolveSize(height, heightMeasureSpec); setMeasuredDimension(mRealWidth, mRealHeight); } @Override protected synchronized void onDraw(Canvas canvas) { switch (mProgressStyle) { case ProgressStyle.NORMAL: drawNormalCircle(canvas); break; case ProgressStyle.FILL_IN: drawFillInCircle(canvas); break; case ProgressStyle.FILL_IN_ARC: drawFillInArcCircle(canvas); break; } } /** * 繪制PROGRESS_STYLE_FILL_IN_ARC圓形 */ private void drawFillInArcCircle(Canvas canvas) { canvas.save(); canvas.translate(mRealWidth / 2, mRealHeight / 2); // 繪制外層圓環 canvas.drawArc(rectF, 0, 360, false, mOutPaint); // 繪制內層進度實心圓弧 // 內層圓弧半徑 float reachArc = getProgress() * 1.0f / getMax() * 360; canvas.drawArc(rectInner, mStartArc, reachArc, true, mReachPaint); // 繪制未到達進度 if (reachArc != 360) { canvas.drawArc(rectInner, reachArc + mStartArc, 360 - reachArc, true, mNormalPaint); } canvas.restore(); } /** * 繪制PROGRESS_STYLE_FILL_IN圓形 */ private void drawFillInCircle(Canvas canvas) { canvas.save(); canvas.translate(mRealWidth / 2, mRealHeight / 2); float progressY = getProgress() * 1.0f / getMax() * (mRadius * 2); float angle = (float) (Math.acos((mRadius - progressY) / mRadius) * 180 / Math.PI); float startAngle = 90 + angle; float sweepAngle = 360 - angle * 2; // 繪制未到達區域 rectF = new RectF(-mRadius, -mRadius, mRadius, mRadius); mNormalPaint.setStyle(Paint.Style.FILL); canvas.drawArc(rectF, startAngle, sweepAngle, false, mNormalPaint); // 翻轉180度繪制已到達區域 canvas.rotate(180); mReachPaint.setStyle(Paint.Style.FILL); canvas.drawArc(rectF, 270 - angle, angle * 2, false, mReachPaint); // 文字顯示在最上層最後繪制 canvas.rotate(180); // 繪制文字 if (mTextVisible) { String text = mTextPrefix + getProgress() + mTextSuffix; float textWidth = mTextPaint.measureText(text); float textHeight = (mTextPaint.descent() + mTextPaint.ascent()); canvas.drawText(text, -textWidth / 2, -textHeight / 2, mTextPaint); } } /** * 繪制PROGRESS_STYLE_NORMAL圓形 */ private void drawNormalCircle(Canvas canvas) { canvas.save(); canvas.translate(mRealWidth / 2, mRealHeight / 2); // 繪制內部圓形背景色 if (needDrawInnerBackground) { canvas.drawCircle(0, 0, mRadius - Math.min(mReachBarSize, mNormalBarSize) / 2, mInnerBackgroundPaint); } // 繪制文字 if (mTextVisible) { String text = mTextPrefix + getProgress() + mTextSuffix; float textWidth = mTextPaint.measureText(text); float textHeight = (mTextPaint.descent() + mTextPaint.ascent()); canvas.drawText(text, -textWidth / 2, -textHeight / 2, mTextPaint); } // 計算進度值 float reachArc = getProgress() * 1.0f / getMax() * 360; // 繪制未到達進度 if (reachArc != 360) { canvas.drawArc(rectF, reachArc + mStartArc, 360 - reachArc, false, mNormalPaint); } // 繪制已到達進度 canvas.drawArc(rectF, mStartArc, reachArc, false, mReachPaint); canvas.restore(); } /** * 動畫進度(0-當前進度) * * @param duration 動畫時長 */ public void runProgressAnim(long duration) { setProgressInTime(0, duration); } /** * @param progress 進度值 * @param duration 動畫播放時間 */ public void setProgressInTime(final int progress, final long duration) { setProgressInTime(progress, getProgress(), duration); } /** * @param startProgress 起始進度 * @param progress 進度值 * @param duration 動畫播放時間 */ public void setProgressInTime(int startProgress, final int progress, final long duration) { ValueAnimator valueAnimator = ValueAnimator.ofInt(startProgress, progress); valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animator) { //獲得當前動畫的進度值,整型,1-100之間 int currentValue = (Integer) animator.getAnimatedValue(); setProgress(currentValue); } }); AccelerateDecelerateInterpolator interpolator = new AccelerateDecelerateInterpolator(); valueAnimator.setInterpolator(interpolator); valueAnimator.setDuration(duration); valueAnimator.start(); } public int getReachBarSize() { return mReachBarSize; } public void setReachBarSize(int reachBarSize) { mReachBarSize = Utils.dp2px(getContext(), reachBarSize); invalidate(); } public int getNormalBarSize() { return mNormalBarSize; } public void setNormalBarSize(int normalBarSize) { mNormalBarSize = Utils.dp2px(getContext(), normalBarSize); invalidate(); } public int getReachBarColor() { return mReachBarColor; } public void setReachBarColor(int reachBarColor) { mReachBarColor = reachBarColor; invalidate(); } public int getNormalBarColor() { return mNormalBarColor; } public void setNormalBarColor(int normalBarColor) { mNormalBarColor = normalBarColor; invalidate(); } public int getTextSize() { return mTextSize; } public void setTextSize(int textSize) { mTextSize = Utils.sp2px(getContext(), textSize); invalidate(); } public int getTextColor() { return mTextColor; } public void setTextColor(int textColor) { mTextColor = textColor; invalidate(); } public float getTextSkewX() { return mTextSkewX; } public void setTextSkewX(float textSkewX) { mTextSkewX = textSkewX; invalidate(); } public String getTextSuffix() { return mTextSuffix; } public void setTextSuffix(String textSuffix) { mTextSuffix = textSuffix; invalidate(); } public String getTextPrefix() { return mTextPrefix; } public void setTextPrefix(String textPrefix) { mTextPrefix = textPrefix; invalidate(); } public boolean isTextVisible() { return mTextVisible; } public void setTextVisible(boolean textVisible) { mTextVisible = textVisible; invalidate(); } public boolean isReachCapRound() { return mReachCapRound; } public void setReachCapRound(boolean reachCapRound) { mReachCapRound = reachCapRound; invalidate(); } public int getRadius() { return mRadius; } public void setRadius(int radius) { mRadius = Utils.dp2px(getContext(), radius); invalidate(); } public int getStartArc() { return mStartArc; } public void setStartArc(int startArc) { mStartArc = startArc; invalidate(); } public int getInnerBackgroundColor() { return mInnerBackgroundColor; } public void setInnerBackgroundColor(int innerBackgroundColor) { mInnerBackgroundColor = innerBackgroundColor; invalidate(); } public int getProgressStyle() { return mProgressStyle; } public void setProgressStyle(int progressStyle) { mProgressStyle = progressStyle; invalidate(); } public int getInnerPadding() { return mInnerPadding; } public void setInnerPadding(int innerPadding) { mInnerPadding = Utils.dp2px(getContext(), innerPadding); int mInnerRadius = mRadius - mOuterSize / 2 - mInnerPadding; rectInner = new RectF(-mInnerRadius, -mInnerRadius, mInnerRadius, mInnerRadius); invalidate(); } public int getOuterColor() { return mOuterColor; } public void setOuterColor(int outerColor) { mOuterColor = outerColor; invalidate(); } public int getOuterSize() { return mOuterSize; } public void setOuterSize(int outerSize) { mOuterSize = Utils.dp2px(getContext(), outerSize); invalidate(); } private static final String STATE = "state"; private static final String PROGRESS_STYLE = "progressStyle"; private static final String TEXT_COLOR = "textColor"; private static final String TEXT_SIZE = "textSize"; private static final String TEXT_SKEW_X = "textSkewX"; private static final String TEXT_VISIBLE = "textVisible"; private static final String TEXT_SUFFIX = "textSuffix"; private static final String TEXT_PREFIX = "textPrefix"; private static final String REACH_BAR_COLOR = "reachBarColor"; private static final String REACH_BAR_SIZE = "reachBarSize"; private static final String NORMAL_BAR_COLOR = "normalBarColor"; private static final String NORMAL_BAR_SIZE = "normalBarSize"; private static final String IS_REACH_CAP_ROUND = "isReachCapRound"; private static final String RADIUS = "radius"; private static final String START_ARC = "startArc"; private static final String INNER_BG_COLOR = "innerBgColor"; private static final String INNER_PADDING = "innerPadding"; private static final String OUTER_COLOR = "outerColor"; private static final String OUTER_SIZE = "outerSize"; @Override public Parcelable onSaveInstanceState() { final Bundle bundle = new Bundle(); bundle.putParcelable(STATE, super.onSaveInstanceState()); // 保存當前樣式 bundle.putInt(PROGRESS_STYLE, getProgressStyle()); bundle.putInt(RADIUS, getRadius()); bundle.putBoolean(IS_REACH_CAP_ROUND, isReachCapRound()); bundle.putInt(START_ARC, getStartArc()); bundle.putInt(INNER_BG_COLOR, getInnerBackgroundColor()); bundle.putInt(INNER_PADDING, getInnerPadding()); bundle.putInt(OUTER_COLOR, getOuterColor()); bundle.putInt(OUTER_SIZE, getOuterSize()); // 保存text信息 bundle.putInt(TEXT_COLOR, getTextColor()); bundle.putInt(TEXT_SIZE, getTextSize()); bundle.putFloat(TEXT_SKEW_X, getTextSkewX()); bundle.putBoolean(TEXT_VISIBLE, isTextVisible()); bundle.putString(TEXT_SUFFIX, getTextSuffix()); bundle.putString(TEXT_PREFIX, getTextPrefix()); // 保存已到達進度信息 bundle.putInt(REACH_BAR_COLOR, getReachBarColor()); bundle.putInt(REACH_BAR_SIZE, getReachBarSize()); // 保存未到達進度信息 bundle.putInt(NORMAL_BAR_COLOR, getNormalBarColor()); bundle.putInt(NORMAL_BAR_SIZE, getNormalBarSize()); return bundle; } @Override public void onRestoreInstanceState(Parcelable state) { if (state instanceof Bundle) { final Bundle bundle = (Bundle) state; mProgressStyle = bundle.getInt(PROGRESS_STYLE); mRadius = bundle.getInt(RADIUS); mReachCapRound = bundle.getBoolean(IS_REACH_CAP_ROUND); mStartArc = bundle.getInt(START_ARC); mInnerBackgroundColor = bundle.getInt(INNER_BG_COLOR); mInnerPadding = bundle.getInt(INNER_PADDING); mOuterColor = bundle.getInt(OUTER_COLOR); mOuterSize = bundle.getInt(OUTER_SIZE); mTextColor = bundle.getInt(TEXT_COLOR); mTextSize = bundle.getInt(TEXT_SIZE); mTextSkewX = bundle.getFloat(TEXT_SKEW_X); mTextVisible = bundle.getBoolean(TEXT_VISIBLE); mTextSuffix = bundle.getString(TEXT_SUFFIX); mTextPrefix = bundle.getString(TEXT_PREFIX); mReachBarColor = bundle.getInt(REACH_BAR_COLOR); mReachBarSize = bundle.getInt(REACH_BAR_SIZE); mNormalBarColor = bundle.getInt(NORMAL_BAR_COLOR); mNormalBarSize = bundle.getInt(NORMAL_BAR_SIZE); initPaint(); super.onRestoreInstanceState(bundle.getParcelable(STATE)); return; } super.onRestoreInstanceState(state); } @Override public void invalidate() { initPaint(); super.invalidate(); } }
3.設置寬高
package com.example.myapplication7; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.RectF; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.text.TextUtils; import android.util.DisplayMetrics; import android.view.WindowManager; import java.util.Collection; import androidx.annotation.ColorRes; public class Utils { private static WindowManager windowManager; private static WindowManager getWindowManager(Context context) { if (windowManager == null) { windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); } return windowManager; } public static float getDensity(Context context) { return context.getResources().getDisplayMetrics().density; } public static float getFontDensity(Context context) { return context.getResources().getDisplayMetrics().scaledDensity; } public static DisplayMetrics getDisplayMetrics(Context context) { DisplayMetrics displayMetrics = new DisplayMetrics(); getWindowManager(context).getDefaultDisplay().getMetrics(displayMetrics); return displayMetrics; } public static int dp2px(Context context, float dp) { return (int) (getDensity(context) * dp + 0.5f); } public static int px2dp(Context context, float px) { return (int) (px / getDensity(context) + 0.5f); } public static int sp2px(Context context, float sp) { return (int) (getFontDensity(context) * sp + 0.5f); } public static int px2sp(Context context, float px) { return (int) (px / getFontDensity(context) + 0.5f); } public static int getWindowWidth(Context context) { return getDisplayMetrics(context).widthPixels; } public static int getWindowHeight(Context context) { return getDisplayMetrics(context).heightPixels; } public static String getPathFormat(String path) { if (!TextUtils.isEmpty(path)) { int lastPeriodIndex = path.lastIndexOf('.'); if (lastPeriodIndex > 0 && lastPeriodIndex + 1 < path.length()) { String format = path.substring(lastPeriodIndex + 1); if (!TextUtils.isEmpty(format)) { return format.toLowerCase(); } } } return ""; } public static boolean isGif(String url) { return "gif".equals(getPathFormat(url)); } public static Bitmap getTextBitmap(Context context, int width, int height, int radius, String text, int textSize, @ColorRes int bgColor) { radius = dp2px(context, radius); Bitmap bitmap = Bitmap.createBitmap(dp2px(context, width), dp2px(context, height), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); RectF rect = new RectF(0, 0, canvas.getWidth(), canvas.getHeight()); Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setColor(context.getResources().getColor(bgColor)); canvas.drawRoundRect(new RectF(0, 0, rect.width(), rect.height()), radius, radius, paint); paint.setColor(Color.WHITE); paint.setTextSize(dp2px(context, textSize)); paint.setTextAlign(Paint.Align.CENTER); Paint.FontMetricsInt fontMetrics = paint.getFontMetricsInt(); float baseline = (rect.bottom + rect.top - fontMetrics.bottom - fontMetrics.top) / 2; canvas.drawText(text, rect.centerX(), baseline, paint); return bitmap; } public static Drawable getTextDrawable(Context context, int width, int height, int radius, String text, int textSize, @ColorRes int bgColor) { return new BitmapDrawable(getTextBitmap(context, width, height, radius, text, textSize, bgColor)); } public static boolean isEmpty(Collection<?> collection) { return collection == null || collection.isEmpty(); } public static int getSize(Collection<?> collection) { return collection == null ? 0 : collection.size(); } }
4.主界面
package com.example.myapplication7; import android.graphics.Bitmap; import android.graphics.Color; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.View; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { private String fileName; private CircleProgressView progressView; private Bitmap bitmap; private int i = 0; final Handler handler = new Handler(new Handler.Callback() { @Override public boolean handleMessage(@NonNull Message msg) { if (msg.what == 1) { //do something int a = (int) msg.obj; Log.e("TAG", "handleMessage" + a); progressView.setProgress(a * 10); if (a == 10) { progressView.setVisibility(View.GONE); } } return false; } }); @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); progressView = findViewById(R.id.progressView); getWindow().setTitleColor(Color.rgb(65, 183, 216)); //主線程中調用: new Thread(new MyThread()).start(); } class MyThread extends Thread {//這裡也可用Runnable接口實現 @Override public void run() { while (true) { try { Thread.sleep(500);//每隔1s執行一次 Message msg = new Message(); msg.what = 1; i++; msg.obj = i; handler.sendMessage(msg); } catch (InterruptedException e) { e.printStackTrace(); } } } } }
5.佈局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <com.example.myapplication7.CircleProgressView android:id="@+id/progressView" android:layout_width="150dp" android:layout_height="150dp" android:progress="0" app:cpv_innerPadding="2dp" app:cpv_outerColor="@android:color/darker_gray" app:cpv_outerSize="1dp" app:cpv_progressNormalColor="@android:color/darker_gray" app:cpv_progressReachColor="@color/white" app:cpv_progressStyle="FillInnerArc" /> </LinearLayout>
6.資源文件
<?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="CircleProgressView"> <attr name="cpv_progressNormalColor" format="color" /> <attr name="cpv_progressReachColor" format="color" /> <attr name="cpv_progressTextColor" format="color" /> <attr name="cpv_progressTextSize" format="dimension" /> <attr name="cpv_progressTextOffset" format="dimension" /> <attr name="cpv_progressNormalSize" format="dimension" /> <attr name="cpv_progressReachSize" format="dimension" /> <attr name="cpv_radius" format="dimension" /> <attr name="cpv_progressTextVisible" format="boolean" /> <attr name="cpv_progressStartArc" format="integer" /> <attr name="cpv_progressTextSkewX" format="dimension" /> <attr name="cpv_progressTextPrefix" format="string" /> <attr name="cpv_progressTextSuffix" format="string" /> <attr name="cpv_innerBackgroundColor" format="color" /> <attr name="cpv_progressStyle" format="enum"> <enum name="Normal" value="0" /> <enum name="FillInner" value="1" /> <enum name="FillInnerArc" value="2" /> </attr> <attr name="cpv_innerProgressColor" format="color" /> <attr name="cpv_innerPadding" format="dimension" /> <attr name="cpv_outerColor" format="color" /> <attr name="cpv_outerSize" format="dimension" /> <attr name="cpv_reachCapRound" format="boolean" /> </declare-styleable> </resources>
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。
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