Android自定义控件之3D上下翻页效果的倒计时控件

心已赠人 2022-06-17 09:26 462阅读 0赞

这是一个自定义的倒计时控件，具有3D上下翻页翻转效果。最近项目中需要做一个倒计时控件，需要和iOS端的效果保持一样。大致效果是这样的，如下图所示：

![Center][]

由于暂时还不会怎么样制作gif动态图，所以想看具体效果的，可以在下面的源码中下载运行查看。

废话不说了，开干吧。那么是怎么实现呢？我们首先得找到3D翻页的效果，这个效果我是参考的一个github项目，https://github.com/emilsjolander/android-FlipView。

其次，倒计时的逻辑，这个不难，最后是自定义的View了。

下面是动画的效果

![Center 1][]

**1.动画的效果**

（1）.这里的动画效果是由Scroller类来实现的。

public void startScroll (int startX, int startY, int dx, int dy, int duration)

（2）.翻页效果  
主要分为三部分

|\_\_\_绘制控件翻转页面的上半部分：

canvas.clipRect(mTopRect);

|\_\_\_绘制控件翻转页面的下半部分：

canvas.clipRect(mBottomRect);

|\_\_\_绘制控件中间的翻页部分：这里利用的是camera类的方法，

camera.rotateX()//看意思就明白表示沿X轴翻转，这是翻转效果的核心方法。
    camera.clipRect(mTopRect,mBottom) //根据当前翻转的度数（0~180度），决定画布裁剪部分。
    camera.getMatrix(mMatrix) //设置matrix矩阵的值，对中间页进行变形，达到翻页的视觉效果。
    //然后通过矩阵变换，绘制视图和控件
    mMatrix.preScale(0.25f, 0.25f);
    mMatrix.postScale(4.0f, 4.0f);
    mMatrix.preTranslate(-getWidth() / 2, -getHeight() / 2);
    mMatrix.postTranslate(getWidth() / 2, getHeight() / 2);
    canvas.concat(mMatrix) 
    drawChild();

其中，控件中间的黑线，也是自定义的一个TextView,因为原生的TextView没有设置文字上画黑线的方法，有画线的方法，但是是跟着字体的颜色变化的，所以不符合需求，需要自定义一下，设置绘画的颜色。

不说了，上代码

clock\_view\_activity.xml

attrs.xml 自定义的属性

<?xml version="1.0" encoding="utf-8"?>
    <resources>
    
        <declare-styleable name="MyClock">
            <attr name="dayTextSize" format="dimension" />
            <attr name="hourTextSize" format="dimension" />
            <attr name="minTextSize" format="dimension" />
            <attr name="secTextSize" format="dimension" />
            <attr name="dayTextColor" format="color" />
            <attr name="hourTextColor" format="color" />
            <attr name="minTextColor" format="color" />
            <attr name="secTextColor" format="color" />
            <attr name="dayTextBackground" format="reference|color" />
            <attr name="hourTextBackground" format="reference|color" />
            <attr name="minTextBackground" format="reference|color" />
            <attr name="secTextBackground" format="reference|color" />
        </declare-styleable>
    </resources>

ids.xml 因为用到的是动态布局，为了能找到控件，得为每个控件设置一个id

<?xml version="1.0" encoding="utf-8"?>
    <resources>
         <item name="dayTextView" type="id" />
         <item name="hourTextView" type="id" />
         <item name="minTextView" type="id" />
         <item name="secTextView" type="id" />
    </resources>

time\_bg.xml 控件的样式

<?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android" >
    
        <corners android:radius="3dp" />
    
        
        <solid android:color="#0B315C" />
        
        <padding
            android:bottom="3dp"
            android:left="6dp"
            android:right="6dp"
            android:top="3dp" />
    
    </shape>

clock\_view\_bg.xml 控件外框的样式

<?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android" >
    
        <corners android:radius="10dp" />
    
        
        <solid android:color="#00000000" />
    
        <stroke
            android:width="2dp"
            android:color="#2F80E9" />
        
        <padding
            android:bottom="5dp"
            android:left="5dp"
            android:right="5dp"
            android:top="5dp" />
    
    </shape>

FlipClockView.java

package com.example.timeticker;
    
    import android.content.Context;
    import android.graphics.Camera;
    import android.graphics.Canvas;
    import android.graphics.Color;
    import android.graphics.Matrix;
    import android.graphics.Paint;
    import android.graphics.Rect;
    import android.graphics.drawable.Drawable;
    import android.util.AttributeSet;
    import android.view.Gravity;
    import android.view.View;
    import android.view.animation.DecelerateInterpolator;
    import android.widget.FrameLayout;
    import android.widget.Scroller;
    import android.widget.TextView;
    
    /**
     日历3D翻转效果
     */
    public class FlipClockView extends FrameLayout {
    
    	private TextView mVisibleTextView;// 可见的
    	private TextView mInvisibleTextView;// 不可见
    
    	private int layoutWidth;
    	private int layoutHeight;
    	private Scroller mScroller;
    
    	private Camera mCamera = new Camera();
    	private Matrix mMatrix = new Matrix();
    	private Rect mTopRect = new Rect();
    	private Rect mBottomRect = new Rect();
    	private boolean isUp2Down = true;
    	private Paint mShinePaint = new Paint();
    	private Paint mShadePaint = new Paint();
    	private boolean isFlipping = false;
    
    	public FlipClockView(Context context) {
    		this(context, null);
    	}
    
    	public FlipClockView(Context context, AttributeSet attrs) {
    		super(context, attrs, 0);
    		init(context);
    	}
    
    	public FlipClockView(Context context, AttributeSet attrs, int defStyleAttr) {
    		super(context, attrs, defStyleAttr);
    	}
    
    	public void init(Context context) {
    		mScroller = new Scroller(context, new DecelerateInterpolator());// 减速 // 动画插入器
    
    		mInvisibleTextView = new MyTextView(context);
    		mInvisibleTextView.setText("0");
    		mInvisibleTextView.setGravity(Gravity.CENTER);
    		mInvisibleTextView.setIncludeFontPadding(false);
    		addView(mInvisibleTextView);
    
    		mVisibleTextView = new MyTextView(context);
    		mVisibleTextView.setText("0");
    		mVisibleTextView.setGravity(Gravity.CENTER);
    		mVisibleTextView.setIncludeFontPadding(false);
    		addView(mVisibleTextView);
    
    		mShadePaint.setColor(Color.BLACK);
    		mShadePaint.setStyle(Paint.Style.FILL);
    		mShinePaint.setColor(Color.WHITE);
    		mShinePaint.setStyle(Paint.Style.FILL);
    	}
    
    	@Override
    	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    		layoutWidth = MeasureSpec.getSize(widthMeasureSpec);
    		layoutHeight = MeasureSpec.getSize(heightMeasureSpec);
    
    		setMeasuredDimension(layoutWidth, layoutHeight);
    	}
    
    	@Override
    	protected void onLayout(boolean changed, int left, int top, int right,
    			int bottom) {
    		super.onLayout(changed, left, top, right, bottom);
    		int count = getChildCount();
    		//将两个textView放置进去
    		for (int i = 0; i < count; i++) {
    			View child = getChildAt(i);
    			child.layout(0, 0, layoutWidth, layoutHeight);
    		}
    
    		mTopRect.top = 0;
    		mTopRect.left = 0;
    		mTopRect.right = getWidth();
    		mTopRect.bottom = getHeight() / 2;
    
    		mBottomRect.top = getHeight() / 2;
    		mBottomRect.left = 0;
    		mBottomRect.right = getWidth();
    		mBottomRect.bottom = getHeight();
    	}
    
    	@Override
    	protected void dispatchDraw(Canvas canvas) {
    		super.dispatchDraw(canvas);
    		if (!mScroller.isFinished() && mScroller.computeScrollOffset()) {
    			drawTopHalf(canvas);
    			drawBottomHalf(canvas);
    			drawFlipHalf(canvas);
    			postInvalidate();
    		} else {
    			if (isFlipping) {
    				showViews(canvas);
    			}
    
    			if (mScroller.isFinished() && !mScroller.computeScrollOffset()) {
    				isFlipping = false;
    			}
    		}
    	}
    
    	/**
    	 * 显示需要显示的数字
    	 * 
    	 * @param canvas
    	 */
    	private void showViews(Canvas canvas) {
    		String current = mVisibleTextView.getText().toString();
    		String past = mInvisibleTextView.getText().toString();
    		// Log.e("需要显示的数字--->",current+ "%%    "+past);
    
    		mVisibleTextView.setText(past);
    		mInvisibleTextView.setText(current);
    
    		// 防止切换抖动
    		drawChild(canvas, mVisibleTextView, 0);
    	}
    
    	/** 画下半部分 */
    	private void drawBottomHalf(Canvas canvas) {
    		canvas.save();
    
    		canvas.clipRect(mBottomRect);
    		View drawView = !isUp2Down ? mInvisibleTextView : mVisibleTextView;
    		drawChild(canvas, drawView, 0);
    
    		canvas.restore();
    	}
    
    	/** 画上半部分 */
    	private void drawTopHalf(Canvas canvas) {
    		canvas.save();
    
    		canvas.clipRect(mTopRect);
    		View drawView = !isUp2Down ? mVisibleTextView : mInvisibleTextView;
    		drawChild(canvas, drawView, 0);
    
    		canvas.restore();
    
    	}
    
    	/** 画翻页部分 */
    	private void drawFlipHalf(Canvas canvas) {
    		canvas.save();
    		mCamera.save();
    
    		View view = null;
    		float deg = getDeg();
    		if (deg > 90) {
    			canvas.clipRect(!isUp2Down ? mTopRect : mBottomRect);
    			mCamera.rotateX(!isUp2Down ? deg - 180 : -(deg - 180));
    			view = mInvisibleTextView;
    		} else {
    			canvas.clipRect(!isUp2Down ? mBottomRect : mTopRect);
    			mCamera.rotateX(!isUp2Down ? deg : -deg);
    			view = mVisibleTextView;
    		}
    
    		mCamera.getMatrix(mMatrix);
    		positionMatrix();
    		canvas.concat(mMatrix);
    
    		if (view != null) {
    			drawChild(canvas, view, 0);
    		}
    
    		drawFlippingShadeShine(canvas);
    
    		mCamera.restore();
    		canvas.restore();
    	}
    
    	private float getDeg() {
    		return mScroller.getCurrY() * 1.0f / layoutHeight * 180;
    	}
    
    	/** 绘制翻页时的阳面和阴面 */
    	private void drawFlippingShadeShine(Canvas canvas) {
    		final float degreesFlipped = getDeg();
    		// Log.d(TAG, "deg: " + degreesFlipped);
    		if (degreesFlipped < 90) {
    			final int alpha = getAlpha(degreesFlipped);
    			// Log.d(TAG, "小于90度时的透明度-------------------> " + alpha);
    			mShinePaint.setAlpha(alpha);
    			mShadePaint.setAlpha(alpha);
    			canvas.drawRect(!isUp2Down ? mBottomRect : mTopRect, !isUp2Down ? mShinePaint
    					: mShadePaint);
    		} else {
    			final int alpha = getAlpha(Math.abs(degreesFlipped - 180));
    			// Log.d(TAG, "大于90度时的透明度-------------> " + alpha);
    			mShadePaint.setAlpha(alpha);
    			mShinePaint.setAlpha(alpha);
    			canvas.drawRect(!isUp2Down ? mTopRect : mBottomRect, !isUp2Down ? mShadePaint
    					: mShinePaint);
    		}
    	}
    
    	private int getAlpha(float degreesFlipped) {
    		return (int) ((degreesFlipped / 90f) * 100);
    	}
    
    	private void positionMatrix() {
    		mMatrix.preScale(0.25f, 0.25f);
    		mMatrix.postScale(4.0f, 4.0f);
    		mMatrix.preTranslate(-getWidth() / 2, -getHeight() / 2);
    		mMatrix.postTranslate(getWidth() / 2, getHeight() / 2);
    	}
    
    	/** 初始化隐藏textView显示的值 */
    	private void initTextView() {
    		int visibleValue = Integer.parseInt(mVisibleTextView.getText()
    				.toString());
    	//	int invisibleValue = isUp2Down ? visibleValue - 1 : visibleValue + 1;//这里控制是 + 还是 -
    		int invisibleValue = visibleValue - 1;
    		if (invisibleValue < 10) {
    			mInvisibleTextView.setText("0" + invisibleValue);
    		} else {
    			mInvisibleTextView.setText("" + invisibleValue);
    		}
    	}
    
    	/**
    	 *
    	 * @param isUp2Down
    	 *     方向标识 true: 从上往下翻  , false: 从下往上翻
    	 */
    	public void setFlipDirection(boolean isUp2Down) {
    	    this.isUp2Down = isUp2Down;
    	}
    	
    	public void smoothFlip() {
    		//Log.e(TAG, "翻动 ");
    		initTextView();
    		isFlipping = true;
    
    		mScroller.startScroll(0, 0, 0, layoutHeight, 700);
    		postInvalidate();
    	}
    
    	public TextView getmVisibleTextView() {
    		return mVisibleTextView;
    	}
    
    	public TextView getmInvisibleTextView() {
    		return mInvisibleTextView;
    	}
    
    	public boolean isFlipping() {
    		return isFlipping && !mScroller.isFinished()
    				&& mScroller.computeScrollOffset();
    	}
    
    	/**
    	 * 获取当前View值
    	 * 
    	 * @return
    	 */
    	public int getCurrentValue() {
    		return Integer.parseInt(mVisibleTextView.getText().toString());
    	}
    
    	/**
    	 * 设置view的时间值
    	 * @param textTime
    	 */
    	public void setClockTime(String textTime) {
    		mVisibleTextView.setText(textTime);
    	}
    
    	/**
    	 * 设置时间数字的背景
    	 * @param drawable
    	 */
    	public void setClockBackground(Drawable drawable) {
    		mVisibleTextView.setBackground(drawable);
    		mInvisibleTextView.setBackground(drawable);
    	}
    
    	/**
    	 * 设置时间数字的颜色
    	 * @param color
    	 */
    	public void setClockTextColor(int color) {
    		mVisibleTextView.setTextColor(color);
    		mInvisibleTextView.setTextColor(color);
    	}
    
    	/**
    	 * 设置时间数字的大小
    	 * @param size
    	 */
    	public void setClockTextSize(float size){
    		mVisibleTextView.setTextSize(size);
    		mInvisibleTextView.setTextSize(size);
    	}
    
    }

MyClockView.java

import android.content.Context;
    import android.content.res.TypedArray;
    import android.graphics.Color;
    import android.graphics.drawable.Drawable;
    import android.os.Handler;
    import android.util.AttributeSet;
    import android.util.Log;
    import android.view.Gravity;
    import android.view.ViewGroup;
    import android.widget.RelativeLayout;
    import android.widget.TextView;
    
    public class MyClockView extends RelativeLayout {
    	private float dayTextSize, hourTextSize, minTextSize, secTextSize;
    	private FlipClockView dayTextView, hourTextView, minTextView, secTextView;
    	private TextView dTextView, hTextView, mTextView, sTextView;
    	private LayoutParams dayLayoutParams, hourLayoutParams, minLayoutParams,
    			secLayoutParams;
    	private DownCountTimerListener mDownCountTimerListener;
    	private Handler mHandler;
    	private Runnable mRunnable;
    	private long totalTime = 0;
    	private boolean isRunning = true;
        private int screenW;
    	private long outNumber=0;//超过的最大计数的时间（秒数）
    
    	public MyClockView(Context context, AttributeSet attrs) {
    		super(context, attrs);
    		initView(context, attrs);
    	}
    
    	public MyClockView(Context context) {
    		this(context, null);
    	}
    
    	public MyClockView(Context context, AttributeSet attrs, int defStyleAttr) {
    		super(context, attrs, defStyleAttr);
    		initView(context, attrs);
    	}
    
    	public void initView(Context context, AttributeSet attrs) {
    		screenW=getScreenWidth(context);
    		TypedArray tArray = context.obtainStyledAttributes(attrs,
    				R.styleable.MyClock);
    		dayTextSize = tArray.getDimension(R.styleable.MyClock_dayTextSize, 26f);
    		hourTextSize = tArray.getDimension(R.styleable.MyClock_hourTextSize,
    				26f);
    		minTextSize = tArray.getDimension(R.styleable.MyClock_minTextSize, 26f);
    		secTextSize = tArray.getDimension(R.styleable.MyClock_secTextSize, 26f);
    		int dayTextColor = tArray.getColor(R.styleable.MyClock_dayTextColor,
    				0xffffff);
    		int hourTextColor = tArray.getColor(R.styleable.MyClock_hourTextColor,
    				0xffffff);
    		int minTextColor = tArray.getColor(R.styleable.MyClock_minTextColor,
    				0xffffff);
    		int secTextColor = tArray.getColor(R.styleable.MyClock_secTextColor,
    				0xffffff);
    		Drawable dayTextBg = tArray
    				.getDrawable(R.styleable.MyClock_dayTextBackground);
    		Drawable hourTextBg = tArray
    				.getDrawable(R.styleable.MyClock_hourTextBackground);
    		Drawable minTextBg = tArray
    				.getDrawable(R.styleable.MyClock_minTextBackground);
    		Drawable secTextBg = tArray
    				.getDrawable(R.styleable.MyClock_secTextBackground);
    
    		tArray.recycle();
    
    		dayTextView = new FlipClockView(context);
    		hourTextView = new FlipClockView(context);
    		minTextView = new FlipClockView(context);
    		secTextView = new FlipClockView(context);
    		
    		dayTextView.setId(R.id.dayTextView);
    		hourTextView.setId(R.id.hourTextView);
    		minTextView.setId(R.id.minTextView);
    		secTextView.setId(R.id.secTextView);
    		
    		dTextView = new TextView(context);
    		hTextView = new TextView(context);
    		mTextView = new TextView(context);
    		sTextView = new TextView(context);
    		dTextView.setText("DAYS");
    		hTextView.setText("HOURS");
    		mTextView.setText("MINUTES");
    		sTextView.setText("SECONDS");
    		dTextView.setTextColor(Color.parseColor("#ffffff"));
    		hTextView.setTextColor(Color.parseColor("#ffffff"));
    		mTextView.setTextColor(Color.parseColor("#ffffff"));
    		sTextView.setTextColor(Color.parseColor("#ffffff"));
    		dTextView.setTextSize(10f);
    		hTextView.setTextSize(10f);
    		mTextView.setTextSize(10f);
    		sTextView.setTextSize(10f);
    
    		dayTextView.setClockBackground(dayTextBg);
    		dayTextView.setClockTextSize(dayTextSize);
    		dayTextView.setClockTextColor(dayTextColor);
    		hourTextView.setClockBackground(hourTextBg);
    		hourTextView.setClockTextSize(dayTextSize);
    		hourTextView.setClockTextColor(hourTextColor);
    		minTextView.setClockBackground(minTextBg);
    		minTextView.setClockTextSize(dayTextSize);
    		minTextView.setClockTextColor(minTextColor);
    		secTextView.setClockBackground(secTextBg);
    		secTextView.setClockTextSize(dayTextSize);
    		secTextView.setClockTextColor(secTextColor);
    		//secTextView.setFlipDirection(false);
    
    		//Log.e("---->","屏幕的宽"+screenW);
            int viewWidth=(int)(screenW*0.14);
    		int viewMargin=(int)(screenW*0.05);
    		dTextView.setWidth(viewWidth);
    		dTextView.setGravity(Gravity.CENTER);
    		hTextView.setWidth(viewWidth);
    		hTextView.setGravity(Gravity.CENTER);
    		mTextView.setWidth(viewWidth);
    		mTextView.setGravity(Gravity.CENTER);
    		sTextView.setWidth(viewWidth);
    		sTextView.setGravity(Gravity.CENTER);
    
    		dayLayoutParams = new LayoutParams(viewWidth,
                    viewWidth);
    		dayLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, TRUE);
    		dayLayoutParams.setMargins(0, 60, 0, 0);
    		addView(dayTextView, dayLayoutParams);
    		LayoutParams dLayoutParams = new LayoutParams(
    				ViewGroup.LayoutParams.WRAP_CONTENT,
    				ViewGroup.LayoutParams.WRAP_CONTENT);
    		dLayoutParams.addRule(RelativeLayout.BELOW, R.id.dayTextView);
    		dLayoutParams.addRule(RelativeLayout.ALIGN_LEFT, R.id.dayTextView);
    		dLayoutParams.setMargins(0, 5, 0, 60);
    		addView(dTextView, dLayoutParams);
    
    		hourLayoutParams = new LayoutParams(viewWidth,
                    viewWidth);
    		hourLayoutParams.addRule(RelativeLayout.RIGHT_OF, R.id.dayTextView);
    		hourLayoutParams.setMargins(viewMargin, 60, viewMargin, 0);
    		addView(hourTextView, hourLayoutParams);
    		LayoutParams hLayoutParams = new LayoutParams(
    				ViewGroup.LayoutParams.WRAP_CONTENT,
    				ViewGroup.LayoutParams.WRAP_CONTENT);
    		hLayoutParams.addRule(RelativeLayout.ALIGN_LEFT, R.id.hourTextView);
    		hLayoutParams.addRule(RelativeLayout.BELOW, R.id.hourTextView);
    		hLayoutParams.setMargins(0, 5, 0, 0);
    		addView(hTextView, hLayoutParams);
    
    		minLayoutParams = new LayoutParams(viewWidth,
    				viewWidth);
    		minLayoutParams.setMargins(0, 60, 0, 0);
    		minLayoutParams.addRule(RelativeLayout.RIGHT_OF, R.id.hourTextView);
    		addView(minTextView, minLayoutParams);
    		LayoutParams mLayoutParams = new LayoutParams(
    				ViewGroup.LayoutParams.WRAP_CONTENT,
    				ViewGroup.LayoutParams.WRAP_CONTENT);
    		mLayoutParams.addRule(RelativeLayout.ALIGN_LEFT, R.id.minTextView);
    		mLayoutParams.addRule(RelativeLayout.BELOW, R.id.minTextView);
    		mLayoutParams.setMargins(0, 5, 0, 0);
    		addView(mTextView, mLayoutParams);
    
    		secLayoutParams = new LayoutParams(viewWidth,
                    viewWidth);
    		secLayoutParams.addRule(RelativeLayout.RIGHT_OF, R.id.minTextView);
    		secLayoutParams.setMargins(viewMargin, 60, 0, 0);
    		addView(secTextView, secLayoutParams);
    		LayoutParams sLayoutParams = new LayoutParams(
    				ViewGroup.LayoutParams.WRAP_CONTENT,
    				ViewGroup.LayoutParams.WRAP_CONTENT);
    		sLayoutParams.addRule(RelativeLayout.ALIGN_LEFT, R.id.secTextView);
    		sLayoutParams.addRule(RelativeLayout.BELOW, R.id.secTextView);
    		sLayoutParams.setMargins(0, 5, 0, 0);
    		addView(sTextView, sLayoutParams);
    
    		dayTextView.setClockTime("00");
    		hourTextView.setClockTime("00");
    		minTextView.setClockTime("00");
    		secTextView.setClockTime("00");
    
    		mHandler = new Handler();
    	}
    
    	public interface DownCountTimerListener {
    
    		void stopDownCountTimer();
    
    	}
    
    	/**
    	 * 暂停计时
    	 */
    	public void pauseDownCountTimer() {
    		if (mRunnable != null) {
    			mHandler.removeCallbacks(mRunnable);
    			dayTextView.setClockTime("00");
    			hourTextView.setClockTime("00");
    			minTextView.setClockTime("00");
    			secTextView.setClockTime("00");
    		//	Log.e("暂停计时", "-=-=-=-=-=");
    		}
    	}
    
    	public void setDownCountTimerListener(DownCountTimerListener listener) {
    		this.mDownCountTimerListener = listener;
    	}
    
    	/**
    	 * 获取设置倒计时的总时间
    	 * @return
    	 */
    	public long getDownCountTime() {
    		return totalTime;
    	}
    
    	/**
    	 * 设定需要倒计时的总共时间
    	 *
    	 * @param totalDownCountTimes
    	 */
    	public void setDownCountTime(long totalDownCountTimes) {
    		this.totalTime = totalDownCountTimes;
    		pauseDownCountTimer();
    	}
    
    	/**
    	 * 设定倒计时的时间开始时间和结束时间
    	 *
    	 * @param startTime
    	 * @param endTime
    	 */
    	public void setDownCountTime(long startTime, long endTime) {
    		this.totalTime = endTime - startTime;
    		pauseDownCountTimer();
    	}
    
    	/**
    	 * 开始倒计时
    	 */
    	public void startDownCountTimer() {
    		isRunning=true;
    		setTime2Text(getDownCountTime());
    		mRunnable = new Runnable() {
    
    			@Override
    			public void run() {
    				int i=secTextView.getCurrentValue();
    			   // Log.e("sec时间----->",i + "");
    				outNumber--;
    				if (outNumber<=0) {
    					if (i > 0) {
    						secTextView.smoothFlip();
    					} else {
    						int j = getClockMinValue();
    						j--;
    						if (j >= 0 && i == 0) {
    							//Log.e("分钟时间----->", j + "");
    							minTextView.smoothFlip();
    							secTextView.setClockTime("60");
    							secTextView.smoothFlip();
    						} else {
    							int k = getClockHourValue();
    							k--;
    
    							if (k >= 0 && j < 0 && i == 0) {
    								hourTextView.smoothFlip();
    								minTextView.setClockTime("60");
    								minTextView.smoothFlip();
    								secTextView.setClockTime("60");
    								secTextView.smoothFlip();
    							} else {
    								int d = getClockDayValue();
    								d--;
    								if (d < 0) {
    									//	Log.e("时间结束----->", j + "    " + i);
    									isRunning = false;
    									if (null != mDownCountTimerListener) {
    										mDownCountTimerListener.stopDownCountTimer();
    									}
    								} else {
    									Log.e("day----->", d + "    ");
    									secTextView.setClockTime("60");
    									minTextView.setClockTime("60");
    									hourTextView.setClockTime("24");
    									d++;
    									dayTextView.setClockTime("" + d);
    									secTextView.smoothFlip();
    									minTextView.smoothFlip();
    									hourTextView.smoothFlip();
    									dayTextView.smoothFlip();
    								}
    							}
    						}
    					}
    				}
    				if (isRunning) {
    					mHandler.postDelayed(this, 1000);
    				} else {
    					mHandler.removeCallbacks(this);
    				}
    			}
    		};
    		mHandler.postDelayed(mRunnable, 1000);
    
    	}
    	/**
    	 * 获取倒计时剩余的时间，数组的4个元素分别代表剩余的天、时、分、秒
    	 * @return
    	 */
    	public String[] getClockRestTime(){
    		String[] restTime=new String[4];
    		restTime[0]=String.valueOf(getClockDayValue());
    		restTime[1]=String.valueOf(getClockHourValue());
    		restTime[2]=String.valueOf(getClockMinValue());
    		restTime[3]=String.valueOf(getClockSecValue());
    		return restTime;
    	}
    
    	public int getScreenWidth(Context mContext) {
           return mContext.getResources().getDisplayMetrics().widthPixels;
    	}
    
    	/**
    	 * 根据给定的时间转换为 天、时、分
    	 *
    	 * @param startTime
    	 */
    	private void setTime2Text(long startTime) {
    
    		int ss = 1000;
    		int mi = ss * 60;
    		int hh = mi * 60;
    		int dd = hh * 24;
    
    		long day = startTime / dd;
    		long hour = (startTime - day * dd) / hh;
    		long minute = (startTime - day * dd - hour * hh) / mi;
    		long second = (startTime - day * dd - hour * hh - minute * mi) / ss;
    
    		String strDay = day < 10 ? "0" + day : "" + day; // 天
    		String strHour = hour < 10 ? "0" + hour : "" + hour;// 小时
    		String strMinute = minute < 10 ? "0" + minute : "" + minute;// 分钟
    		String strSecond = second < 10 ? "0" + second : "" + second;// 秒
    
    		Log.e("时间----》", strDay+"  "+strHour +"  "+strMinute+"  "+strSecond);
    		if (Integer.parseInt(strDay) >= 100) {
    			dayTextView.setClockTime("99");
    			hourTextView.setClockTime("23");
    			minTextView.setClockTime("59");
    			secTextView.getmInvisibleTextView().setText("59");
    			secTextView.getmVisibleTextView().setText("59");
    			outNumber=((startTime)-1000L*60L*60L*24L*100L)/1000L;
    		//	Log.e("多余的时间----》",outNumber+"");
    		} else {
    			dayTextView.setClockTime(strDay);
    			hourTextView.setClockTime(strHour);
    			minTextView.setClockTime(strMinute);
    			secTextView.getmVisibleTextView().setText(strSecond);
    			secTextView.getmInvisibleTextView().setText(strSecond);
    			outNumber=0;
    		}
    	}
    
    	public int getClockDayValue() {
    		return dayTextView.getCurrentValue();
    	}
    
    	public int getClockHourValue() {
    		return hourTextView.getCurrentValue();
    	}
    
    	public int getClockMinValue() {
    		return minTextView.getCurrentValue();
    	}
    
    	public int getClockSecValue(){
    		return secTextView.getCurrentValue();
    	}
    	
    }

MyTextView.java

import android.content.Context;
    import android.graphics.Canvas;
    import android.graphics.Color;
    import android.graphics.Paint;
    import android.util.AttributeSet;
    import android.widget.TextView;
    
    public class MyTextView extends TextView {
    
    	Paint mPaint;
    	
    	public MyTextView(Context context, AttributeSet attrs) {
    		super(context, attrs);
    		initPaint();
    	}
    
    	public MyTextView(Context context, AttributeSet attrs, int defStyleAttr) {
    		super(context, attrs, defStyleAttr);
    		initPaint();
    	}
    
    	public MyTextView(Context context) {
    		this(context, null);
    		initPaint();
    	}
    	
    	private void initPaint() {
    		mPaint=new Paint(Paint.ANTI_ALIAS_FLAG);
    		mPaint.setStyle(Paint.Style.FILL);
    		mPaint.setColor(Color.BLACK);
    	}
    
    	@Override
    	protected void onDraw(Canvas canvas) {
    		super.onDraw(canvas);
    		canvas.drawRect(0,getMeasuredHeight()/2-1,getMeasuredWidth(),getMeasuredHeight()/2+1, mPaint);
    		
    	}
    
    }

MainActivity.java

MainActivity.java
    package com.example.timeticker;
    
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;
    
    public class MainActivity extends AppCompatActivity implements View.OnClickListener, MyClockView.DownCountTimerListener {
        Button mBtn;
        private MyClockView myClockView;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.clock_view_activity);
            mBtn = (Button) findViewById(R.id.button1);
            mBtn.setOnClickListener(this);
            myClockView = (MyClockView) findViewById(R.id.clockView);
            myClockView.setDownCountTimerListener(this);
        }
    
        @Override
        public void onClick(View view) {
            switch (view.getId()) {
                case R.id.button1:
                    myClockView.setDownCountTime(1000L * 60L + 1000L * 12L);
                    myClockView.startDownCountTimer();
    
                    break;
    
                default:
                    break;
            }
        }
    
        @Override
        public void stopDownCountTimer() {
            Toast.makeText(this,"结束了",Toast.LENGTH_SHORT).show();
        }
    }

**PS.**上面的效果，可能在某些手机上翻转时的效果会出现闪烁的现象，是因为手机的硬件加速功能开启了的原因，为此。你需要在初始化view的时候关闭硬件加速。

myClockView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);

还有，有些手机上适配效果不好，可以在布局文件里添加padding的属性，保证控件都在所包裹的父布局中。  
  
好了，上面应该比较清楚了，有不清楚的，可以留言，欢迎探讨。  
喜欢本文的，点个赞。

[点击下载Demo][Demo]

[Center]: /images/20220617/2676b3f2fd9f4ecfa7cd4cadab3de08c.png
[Center 1]: /images/20220617/d7e637334b5c4d628a49b02e62134fb1.png
[Demo]: http://download.csdn.net/detail/android_cmos/9822575