android自定义圆形倒计时显示控件

概述android自定义圆形倒计时显示控件 本文实例为大家分享了android自定义圆形倒计时显示控件的具体代码,供大家参考,具体内容如下 先上效果图 - 倒计时结束 代码块 attr.xml 控件需要用到的属性: <?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="CountDownView"> <!--颜色--> <attr ...

本文实例为大家分享了androID自定义圆形倒计时显示控件的具体代码，供大家参考，具体内容如下

先上效果图

- 倒计时结束

代码块

attr.xml 控件需要用到的属性：

<?xml version="1.0" enCoding="utf-8"?><resources> <declare-styleable name="CountDownVIEw">  <!--颜色-->  <attr name="ringcolor" format="color" />  <!-- 进度文本的字体大小 -->  <attr name="progresstextSize" format="dimension" />  <!-- 圆环宽度 -->  <attr name="ringWIDth" format="float" />  <!--进度文本颜色-->  <attr name="progresstextcolor" format="color"/>  <!--倒计时-->  <attr name="countdownTime" format="integer"/> </declare-styleable></resources>

CountDownVIEw.java

public class CountDownVIEw extends VIEw { //圆轮颜色 private int mRingcolor; //圆轮宽度 private float mRingWIDth; //圆轮进度值文本大小 private int mRingProgesstextSize; //宽度 private int mWIDth; //高度 private int mHeight; private Paint mPaint; //圆环的矩形区域 private RectF mRectF; // private int mProgesstextcolor; private int mCountdownTime; private float mCurrentProgress; private OnCountDownFinishListener mListener; public CountDownVIEw(Context context) {  this(context,null); } public CountDownVIEw(Context context,AttributeSet attrs) {  this(context,attrs,0); } public CountDownVIEw(Context context,AttributeSet attrs,int defStyleAttr) {  super(context,defStyleAttr);  TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.CountDownVIEw);  mRingcolor = a.getcolor(R.styleable.CountDownVIEw_ringcolor,context.getResources().getcolor(R.color.colorAccent));  mRingWIDth = a.getfloat(R.styleable.CountDownVIEw_ringWIDth,40);  mRingProgesstextSize = a.getDimensionPixelSize(R.styleable.CountDownVIEw_progresstextSize,displayUtils.sp2px(context,20));  mProgesstextcolor = a.getcolor(R.styleable.CountDownVIEw_progresstextcolor,context.getResources().getcolor(R.color.colorAccent));  mCountdownTime = a.getInteger(R.styleable.CountDownVIEw_countdownTime,60);  a.recycle();  mPaint = new Paint(Paint.ANTI_AliAS_FLAG);  mPaint.setAntiAlias(true);  this.setwillNotDraw(false); } public voID setCountdownTime(int mCountdownTime) {  this.mCountdownTime = mCountdownTime; } @OverrIDe protected voID onLayout(boolean changed,int left,int top,int right,int bottom) {  super.onLayout(changed,left,top,right,bottom);  mWIDth = getMeasureDWIDth();  mHeight = getMeasuredHeight();  mRectF = new RectF(0 + mRingWIDth / 2,0 + mRingWIDth / 2,mWIDth - mRingWIDth / 2,mHeight - mRingWIDth / 2); } @OverrIDe protected voID onDraw(Canvas canvas) {  super.onDraw(canvas);  /**   *圆环   */  //颜色  mPaint.setcolor(mRingcolor);  //空心  mPaint.setStyle(Paint.Style.stroke);  //宽度  mPaint.setstrokeWIDth(mRingWIDth);  canvas.drawArc(mRectF,-90,mCurrentProgress - 360,false,mPaint);  //绘制文本  Paint textPaint = new Paint();  textPaint.setAntiAlias(true);  textPaint.setTextAlign(Paint.Align.CENTER);  String text = mCountdownTime - (int) (mCurrentProgress / 360f * mCountdownTime) + "";  textPaint.setTextSize(mRingProgesstextSize);  textPaint.setcolor(mProgesstextcolor);  //文字居中显示  Paint.FontMetricsInt FontMetrics = textPaint.getFontMetricsInt();  int baseline = (int) ((mRectF.bottom + mRectF.top - FontMetrics.bottom - FontMetrics.top) / 2);  canvas.drawText(text,mRectF.centerX(),baseline,textPaint); } private ValueAnimator getValA(long countdownTime) {  ValueAnimator valueAnimator = ValueAnimator.offloat(0,100);  valueAnimator.setDuration(countdownTime);  valueAnimator.setInterpolator(new linearInterpolator());  valueAnimator.setRepeatCount(0);  return valueAnimator; } /**  * 开始倒计时  */ public voID startCountDown() {  setClickable(false);  ValueAnimator valueAnimator = getValA(mCountdownTime * 1000);  valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {   @OverrIDe   public voID onAnimationUpdate(ValueAnimator animation) {    float i = float.valueOf(String.valueOf(animation.getAnimatedValue()));    mCurrentProgress = (int) (360 * (i / 100f));    invalIDate();   }  });  valueAnimator.start();  valueAnimator.addListener(new AnimatorListenerAdapter() {   @OverrIDe   public voID onAnimationEnd(Animator animation) {    super.onAnimationEnd(animation);    //倒计时结束回调    if (mListener != null) {     mListener.countDownFinished();    }    setClickable(true);   }  }); } public voID setAddCountDownListener(OnCountDownFinishListener mListener) {  this.mListener = mListener; } public interface OnCountDownFinishListener {  voID countDownFinished(); }}

MainActivity.java

package com.ouyuan.demo.myapplication;import androID.animation.ValueAnimator;import androID.support.v7.app.AppCompatActivity;import androID.os.Bundle;import androID.vIEw.VIEw;import androID.Widget.TextVIEw;import androID.Widget.Toast;public class MainActivity extends AppCompatActivity { CountDownVIEw cdv; TextVIEw textVIEw; @OverrIDe protected voID onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentVIEw(R.layout.activity_main);  cdv = (CountDownVIEw) findVIEwByID(R.ID.countDownVIEw);  cdv.setAddCountDownListener(new CountDownVIEw.OnCountDownFinishListener() {   @OverrIDe   public voID countDownFinished() {    Toast.makeText(MainActivity.this,"倒计时结束",Toast.LENGTH_SHORT).show();   }  });  cdv.setonClickListener(new VIEw.OnClickListener() {   @OverrIDe   public voID onClick(VIEw v) {    cdv.startCountDown();   }  }); }}

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