Android自定义短信验证码组件

Android自定义短信验证码组件，供大家参考，具体内容如下

效果图

1.布局实现

因为要禁用光标，所以我用TextView代替了EditText，每一行显示的验证码个数由用户决定，所以我这里用线性布局的权重，对TextView进行控制宽度等分，然后设置选中和未选中当前TextView的底部边框，设置高亮颜色背景

2.接受用户输入

我这里使用了TextView，但是怎么接受用户输入的值呢。这里我直接继承了RelativeLayout，然后添加了一个透明的EditText，覆盖在这几个TextView上面，用户就可以点击唤起键盘输入

3.TextView如何显示值和删除值

我这里设置EditText的TextColor和BackgroundColor为Color.TRANSPARENT 透明，然后监听EditText的addTextChangedListener事件和setOnKeyListener按键删除事件，然后把值添加到TextView上，就能实现了，然后在写一个对外的接口。获取到输入的验证码。

4.添加闪烁的动画

我这里使用了ObjectAnimator，初始化给每个TextView添加动画，然后在输入的时候给当前的TextView启动动画，取消其他TextView动画

具体源码如下:

/**
 * @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;//验证码数量
  private int codeSize;//字体大小
  private int codeColor;//字体颜色
  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));
    //初始化一个大的LinearLayout来存放验证码
    LinearLayout codeBox = new LinearLayout(mContext);
    codeBox.setOrientation(LinearLayout.HORIZONTAL);
    codeBox.setGravity(Gravity.CENTER);
    //添加方块
    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);
      //默认第一个选中
      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);//添加到数组
    }
    layoutParams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    //添加codebox的位置在组件的最上面
    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监听
    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("");//清空数据
          if(codes.size() < num){
            codes.add(editable.toString());
            showCode();
          }
        }
      }
    });

    // 监听验证码删除按键
    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();//添加东安湖
    setTwinkle();//开启动画
  }

  //显示验证码
  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();//动画
    callBack();//回调

  }

  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));
        }
      }
    }
  }

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

  //定义回调
  public interface OnInputListener{
    void onSucess(String code);
    void onInput();
  }
  private OnInputListener onInputListener;
  public void setOnInputListener(OnInputListener onInputListener){
    this.onInputListener = onInputListener;
  }

  /**
   * 获得手机号验证码
   * @return 验证码
   */
  public String getPhoneCode(){
    StringBuilder sb = new StringBuilder();
    for (String code : codes) {
      sb.append(code);
    }
    return sb.toString();
  }

  /**
   * 显示键盘
   */
  public void showSoftInput(){
    //显示软键盘
    if(imm!=null && etCode!=null) {
      etCode.postDelayed(new Runnable() {
        @Override
        public void run() {
          imm.showSoftInput(etCode, 0);
        }
      },200);
    }
  }

  /**
   * 隐藏键盘
   */
  public void hideSoftInput(){
    //显示软键盘
    if(imm!=null && etCode!=null) {
      etCode.postDelayed(new Runnable() {
        @Override
        public void run() {
          imm.hideSoftInputFromWindow(etCode.getWindowToken(), 0);
        }
      },200);
    }
  }

  /**
   * 添加动画
   */
  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);
    }
  }

  /**
   * 开启动画
   */
  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();
    }
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。