Android自定義短信驗證碼組件

Android自定義短信驗證碼組件,供大傢參考,具體內容如下

效果圖

1.佈局實現

因為要禁用光標,所以我用TextView代替瞭EditText,每一行顯示的驗證碼個數由用戶決定,所以我這裡用線性佈局的權重,對TextView進行控制寬度等分,然後設置選中和未選中當前TextView的底部邊框,設置高亮顏色背景

2.接受用戶輸入

我這裡使用瞭TextView,但是怎麼接受用戶輸入的值呢。這裡我直接繼承瞭RelativeLayout,然後添加瞭一個透明的EditText,覆蓋在這幾個TextView上面,用戶就可以點擊喚起鍵盤輸入

3.TextView如何顯示值和刪除值

我這裡設置EditText的TextColor和BackgroundColor為Color.TRANSPARENT 透明,然後監聽EditText的addTextChangedListener事件和setOnKeyListener按鍵刪除事件,然後把值添加到TextView上,就能實現瞭,然後在寫一個對外的接口。獲取到輸入的驗證碼。

4.添加閃爍的動畫

我這裡使用瞭ObjectAnimator,初始化給每個TextView添加動畫,然後在輸入的時候給當前的TextView啟動動畫,取消其他TextView動畫

具體源碼如下:

/**
 * @author wu_ming_zhi_bei
 * @date 2021/1/27 15:00
 * @Notes
 */
public class VerificationCodeView extends RelativeLayout {
  private Context mContext;
  private RelativeLayout.LayoutParams layoutParams;
  private int num = 4;//驗證碼數量
  private int codeSize;//字體大小
  private int codeColor;//字體顏色
  private List<TextView> tvs = new ArrayList<>();
  private List<String> codes = new ArrayList<>();
  private EditText etCode;
  private InputMethodManager imm;
  List<ObjectAnimator> animators = new ArrayList<>();

  public VerificationCodeView(Context context) {
    this(context,null);
  }

  public VerificationCodeView(Context context, AttributeSet attrs) {
    this(context,attrs,0);
  }

  public VerificationCodeView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init(context,attrs);
  }

  private void init(Context context, AttributeSet attrs) {
    this.mContext = context;
    imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);

    TypedArray a = mContext.obtainStyledAttributes(attrs, R.styleable.VerificationCodeView);
    num = a.getInteger(R.styleable.VerificationCodeView_num,4);
    codeSize = a.getDimensionPixelSize(R.styleable.VerificationCodeView_codeSize,18);
    codeColor = a.getColor(R.styleable.VerificationCodeView_codeColor,getResources().getColor(R.color.theme_color));
    //初始化一個大的LinearLayout來存放驗證碼
    LinearLayout codeBox = new LinearLayout(mContext);
    codeBox.setOrientation(LinearLayout.HORIZONTAL);
    codeBox.setGravity(Gravity.CENTER);
    //添加方塊
    for(int i=0;i<num;i++){
      TextView tv = new TextView(mContext);
      tv.setTextSize(codeSize);
      tv.setTextColor(codeColor);
      tv.setGravity(Gravity.CENTER);
      tv.setPadding(0,0,0,10);
      LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
          LayoutParams.MATCH_PARENT,
          LayoutParams.MATCH_PARENT, 1);
      param.gravity = Gravity.CENTER;
      param.rightMargin = 20;
      param.leftMargin = 20;
      param.topMargin = 20;
      param.bottomMargin = 20;
      tv.setLayoutParams(param);
      //默認第一個選中
      if(i==0){
        tv.setText("|");
        tv.setBackground(mContext.getResources().getDrawable(R.drawable.code_border_current_bottom));
      }else{
        tv.setBackground(mContext.getResources().getDrawable(R.drawable.code_border_bottom));
      }
      codeBox.addView(tv);
      tvs.add(tv);//添加到數組
    }
    layoutParams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    //添加codebox的位置在組件的最上面
    layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP,TRUE);
    layoutParams.setMargins(60,0,60,0);
    codeBox.setLayoutParams(layoutParams);

    //添加Edit
    etCode = new EditText(mContext);
    etCode.setLayoutParams(layoutParams);
    etCode.setLines(1);
    etCode.setMaxLines(1);
    etCode.setTextColor(Color.TRANSPARENT);
    etCode.setBackgroundColor(Color.TRANSPARENT);
    etCode.setCursorVisible(false);
    //添加edit監聽
    etCode.addTextChangedListener(new TextWatcher() {
      @Override
      public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

      }

      @Override
      public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

      }

      @Override
      public void afterTextChanged(Editable editable) {
        if(editable != null && editable.length()>0) {
          etCode.setText("");//清空數據
          if(codes.size() < num){
            codes.add(editable.toString());
            showCode();
          }
        }
      }
    });

    // 監聽驗證碼刪除按鍵
    etCode.setOnKeyListener(new View.OnKeyListener() {
      @Override
      public boolean onKey(View view, int keyCode, KeyEvent keyEvent) {
        if (keyCode == KeyEvent.KEYCODE_DEL && keyEvent.getAction() == KeyEvent.ACTION_DOWN && codes.size()>0) {
          codes.remove(codes.size()-1);
          showCode();
          return true;
        }
        return false;
      }
    });
    addView(codeBox);
    addView(etCode);
    addAnimation();//添加東安湖
    setTwinkle();//開啟動畫
  }

  //顯示驗證碼
  private void showCode(){
    int size = codes.size();//1 6
    for(int i=0;i<num;i++){
      if(size>i){
        tvs.get(i).setText(codes.get(i));//添加到textview
      }else if(size==i){
        tvs.get(i).setText("|");
      }else{
        tvs.get(i).setText("");
      }
    }
    etCode.setFocusable(true);
    etCode.requestFocus();
    etCode.setFocusableInTouchMode(true);
    etCode.requestFocusFromTouch();
    setTwinkle();//動畫
    callBack();//回調

  }

  private void showColor(){
    int size = codes.size();
    if(size==0){
      tvs.get(0).setBackground(mContext.getResources().getDrawable(R.drawable.code_border_current_bottom));
    }else{
      for(int i=0;i<tvs.size();i++){
        if(i==size-1){
          tvs.get(i).setBackground(mContext.getResources().getDrawable(R.drawable.code_border_current_bottom));
        }else{
          tvs.get(i).setBackground(mContext.getResources().getDrawable(R.drawable.code_border_bottom));
        }
      }
    }
  }

  /**
   * 回調
   */
  private void callBack(){
    if(onInputListener==null){
      return;
    }
    if(codes.size()==num){
      onInputListener.onSucess(getPhoneCode());
    }else{
      onInputListener.onInput();
    }
  }

  //定義回調
  public interface OnInputListener{
    void onSucess(String code);
    void onInput();
  }
  private OnInputListener onInputListener;
  public void setOnInputListener(OnInputListener onInputListener){
    this.onInputListener = onInputListener;
  }

  /**
   * 獲得手機號驗證碼
   * @return 驗證碼
   */
  public String getPhoneCode(){
    StringBuilder sb = new StringBuilder();
    for (String code : codes) {
      sb.append(code);
    }
    return sb.toString();
  }


  /**
   * 顯示鍵盤
   */
  public void showSoftInput(){
    //顯示軟鍵盤
    if(imm!=null && etCode!=null) {
      etCode.postDelayed(new Runnable() {
        @Override
        public void run() {
          imm.showSoftInput(etCode, 0);
        }
      },200);
    }
  }

  /**
   * 隱藏鍵盤
   */
  public void hideSoftInput(){
    //顯示軟鍵盤
    if(imm!=null && etCode!=null) {
      etCode.postDelayed(new Runnable() {
        @Override
        public void run() {
          imm.hideSoftInputFromWindow(etCode.getWindowToken(), 0);
        }
      },200);
    }
  }

  /**
   * 添加動畫
   */
  private void addAnimation(){
    for(int i=0;i<tvs.size();i++){
      ObjectAnimator animator = ObjectAnimator.ofInt(tvs.get(i), "TextColor", 0x00000000, 0xfff00000);
      animator.setDuration(10000);
      final int index = i;
      animator.addListener(new Animator.AnimatorListener() {
        @Override
        public void onAnimationStart(Animator animator) {

        }

        @Override
        public void onAnimationEnd(Animator animator) {

        }

        @Override
        public void onAnimationCancel(Animator animator) {
          tvs.get(index).setTextColor(codeColor);
        }

        @Override
        public void onAnimationRepeat(Animator animator) {

        }
      });
      animator.setInterpolator(new LinearInterpolator());
      animator.setRepeatCount(Animation.INFINITE);
      animators.add(animator);
    }
  }

  /**
   * 開啟動畫
   */
  private void setTwinkle(){
    int size = codes.size();
    for(int i=0;i<tvs.size();i++){
      if(i==size){
        animators.get(i).start();
        tvs.get(i).setBackground(mContext.getResources().getDrawable(R.drawable.code_border_current_bottom));
      }else{
        animators.get(i).cancel();
        tvs.get(i).setBackground(mContext.getResources().getDrawable(R.drawable.code_border_bottom));
      }
    }
  }

  @Override
  protected void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    for(int i=0;i<tvs.size();i++){
      animators.get(i).cancel();
    }
  }
}

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