android 自定义动画按钮

package com.geolo.android;  

import android.content.Context;  

import android.graphics.Bitmap;  

import android.graphics.Bitmap.Config;  

import android.graphics.BitmapFactory;  

import android.graphics.Canvas;  

import android.graphics.Color;  

import android.graphics.Matrix;  

import android.graphics.Paint;  

import android.graphics.PorterDuff.Mode;  

import android.graphics.PorterDuffXfermode;  

import android.graphics.Rect;  

import android.graphics.RectF;  

import android.util.AttributeSet;  

import android.view.MotionEvent;  

import android.widget.ImageView;  

public class MyButtonView extends ImageView{  

    private Bitmap animBitmap = null;  

    private Bitmap buttonBitmap = null;  

    private int moveX = 0;  

    private boolean isPress = false;  

    private int timeID = 0;  

    private Integer myButtonID[] = new Integer[]{  

            R.drawable.mybutton01,  

            R.drawable.mybutton02,  

            R.drawable.mybutton03,  

            R.drawable.mybutton04,  

            R.drawable.mybutton05,  

            R.drawable.mybutton06,  

            R.drawable.mybutton07,  

            R.drawable.mybutton08,  

            R.drawable.mybutton09,  

            R.drawable.mybutton10,  

            R.drawable.mybutton11,  

            R.drawable.mybutton12,  

            R.drawable.mybutton13,  

            R.drawable.mybutton14,  

            R.drawable.mybutton15,  

            R.drawable.mybutton16,  

            R.drawable.mybutton17,  

            R.drawable.mybutton18,  

            R.drawable.mybutton19,  

            R.drawable.mybutton20  

    };  

    public MyButtonView(Context context) {  

        this(context, null);  

    }  

    public MyButtonView(Context context, AttributeSet attrs) {  

        super(context,attrs);  

        animBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.myutil);  

        buttonBitmap = BitmapFactory.decodeResource(getResources(),myButtonID[0]);  

        new Thread(new MyThread()).start();  

    @Override  

    protected void onDraw(Canvas canvas) {  

        super.onDraw(canvas);  

        drawImage(canvas,0,0,animBitmap,moveX,0,200,100);  

        canvas.drawBitmap(buttonBitmap,20,15, null);  

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {  

        setMeasuredDimension(131, 53);  

    private void drawImage(Canvas canvas , int x, int y,Bitmap oldBitmap , int sx,int sy,int width ,int height){  

        Rect rect_x = new Rect();  

        rect_x.left = sx;  

        rect_x.right = sx + width;  

        rect_x.top = sy;  

        rect_x.bottom = sy + height;  

        Rect rect_y = new Rect();  

        rect_y.left = x;  

        rect_y.right = x + width;  

        rect_y.top = y;  

        rect_y.bottom = y + height;  

        //按指定的裁剪矩形来绘制图片  

        //分别是屏幕上的矩形和图片上要绘制的矩形裁剪  

        Bitmap output = Bitmap.createBitmap(oldBitmap.getWidth(),  

                oldBitmap.getHeight(), Config.ARGB_8888);  

        Canvas canvas2 = new Canvas(output);  

        Paint paint = new Paint();  

        paint.setAntiAlias(true);  

        //canvas.drawARGB(0, 0, 0, 0);  

        //paint.setColor(0xff424242);  

        //paint.setAlpha(140);  

        //canvas2.drawRoundRect(new RectF(2,4,130,50), 10.0f, 10.0f, paint);  

        canvas2.drawRoundRect(new RectF(1,0,130,50), 15.0f, 15.0f, paint);  

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));  

        canvas2.drawBitmap(oldBitmap, rect_x, rect_y, paint);  

        canvas.drawBitmap(output, 0 , 0, null);  

        rect_x = null;  

        rect_y = null;  

    public boolean dispatchTouchEvent(MotionEvent event) {  

        /*  if(isReleased){ 

            touchPoint = new Point(); 

            touchPoint.x = (int)event.getX(); 

            touchPoint.y = (int)event.getY();    

        }*/  

        switch (event.getAction()) {  

        case MotionEvent.ACTION_DOWN:    

            isPress = true;  

            break;  

        case MotionEvent.ACTION_UP:  

            isPress = false;  

        default:  

        }  

        return true;  

    private class MyThread implements Runnable{  

        @Override  

        public void run() {  

            while(!Thread.currentThread().isInterrupted()){  

                try {  

                    moveX++;  

                    if(moveX > 100){  

                        moveX = 0;  

                    }  

                    if(isPress){  

                        timeID ++ ;  

                        if(timeID <20){  

                            buttonBitmap = BitmapFactory.decodeResource(getResources(), myButtonID[timeID]);  

                        }else{  

                            timeID =0 ;  

                        }  

                    Thread.sleep(50);  

                } catch (Exception e) {  

                    Thread.currentThread().interrupt();  

                }  

                postInvalidate();  

            }  

}