Android自定义控件实现验证码倒计时

<com.landptf.view.CountDownM android:id="@+id/cdm_identifying_code" android:layout_width="wrap_content" android:layout_height="50dp" android:layout_alignParentRight="true" android:text="获取验证码" landptf:backColor="@color/colorPrimary" landptf:countDownSeconds="10"/>CountDownM cdmIdentifyingCode = (CountDownM) findViewById(R.id.cdm_identifying_code);if (cdmIdentifyingCode != null) { cdmIdentifyingCode.setOnClickListener(new CountDownM.OnClickListener() {  @Override  public void onClick(View v) {   Toast.makeText(CountDownMTestActivity.this, "验证码发送成功", Toast.LENGTH_SHORT).show();  } });}

/** * Created by landptf on 2017/03/15. * 获取验证码倒计时控件 */public class CountDownM extends ButtonM { private OnClickListener onClickListener = null; private CountDownTimer countDownTimer; /**  * 倒计时总时长  */ private int countDownSeconds = 60; /**  * 按钮的背景色  */ private int backColor = 0; public interface OnClickListener{  void onClick(View v); } public CountDownM(Context context) {  this(context, null); } public CountDownM(Context context, AttributeSet attrs) {  this(context, attrs, 0); } public CountDownM(Context context, AttributeSet attrs, int defStyle) {  super(context, attrs, defStyle);  TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.countDownM, defStyle, 0);  if (a != null) {   //设置背景色   ColorStateList colorList = a.getColorStateList(R.styleable.countDownM_backColor);   if (colorList != null) {    backColor = colorList.getColorForState(getDrawableState(), 0);    if (backColor != 0) {     setBackColor(backColor);    }   } else {    setBackColor(getResources().getColor(R.color.mainColor));   }   //获取倒计时总时长   int countDownSeconds = a.getInteger(R.styleable.countDownM_countDownSeconds, 60);   setCountDownSeconds(countDownSeconds);   a.recycle();  }  //设置文字颜色  setTextColor(getResources().getColor(android.R.color.white));  //设置位置相关属性  setGravity(Gravity.CENTER);  setPadding(ConvertM.dp2px(context, 8), 0, ConvertM.dp2px(context, 8), 0);  setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    if (onClickListener != null) {     onClickListener.onClick(v);    }    //点击后开始计时    start();   }  }); } /**  * 设置倒计时总时长  * @param countDownSeconds  */ public void setCountDownSeconds(int countDownSeconds){  this.countDownSeconds = countDownSeconds; } /**  * 设置背景色  * @param backColor  */ @Override public void setBackColor(int backColor) {  this.backColor = backColor;  super.setBackColor(backColor); } /**  * 停止倒计时  */ public void stop(){  countDownTimer.cancel();  resetButton(); } public void setOnClickListener(OnClickListener l){  this.onClickListener = l; } private void start(){  setEnabled(false);//设置不能点击  countDownTimer = new CountDownTimer(countDownSeconds * 1000, 1000) {   @Override   public void onTick(long millisUntilFinished) {    setText(millisUntilFinished / 1000 + getResources().getString(R.string.count_down_m_recapture_after));//设置倒计时时间    //设置按钮为灰色，这时是不能点击的    CountDownM.super.setBackColor(Color.GRAY);    Spannable span = new SpannableString(getText().toString());//获取按钮的文字    span.setSpan(new ForegroundColorSpan(Color.RED), 0, 2, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);//讲倒计时时间显示为红色    setText(span);   }   @Override   public void onFinish() {    resetButton();   }  };  countDownTimer.start(); } private void resetButton(){  setText(getResources().getString(R.string.count_down_m_recapture));  setEnabled(true);//重新获得点击  if (backColor != 0) {   setBackColor(backColor);//还原背景色  } else {   setBackColor(getResources().getColor(R.color.mainColor));//还原背景色  } }}