Android多线程之控制animation走走停停

首先，定义一个rotate的animation：
Xml代码 
<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android"> 
<rotate  
        android:interpolator="@android:anim/accelerate_decelerate_interpolator" 
        android:fromDegrees="0"  
        android:toDegrees="+360"          
        android:pivotX="50%"  
        android:pivotY="50%"      
        android:duration="3000" />   
</set> 
 在code里面，实例化一个freshThrad去画animation。点击stop的时候，call freshThrad.interrupt();将此时wait的freshThrad唤醒，跳用imagview的clearAnimation方法，停止动画。
Java代码 
package com.animation.test; 
 
import android.app.Activity; 
import android.graphics.drawable.AnimationDrawable; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.util.Log; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.animation.Animation; 
import android.view.animation.AnimationUtils; 
import android.view.animation.RotateAnimation; 
import android.view.animation.Animation.AnimationListener; 
import android.widget.Button; 
import android.widget.ImageView; 
 
public class AnimationTest extends Activity implements OnClickListener{ 
    private ImageView icon; 
    private Animation animation; 
    private Button btStop; 
    private Button btStart; 
    private boolean runFlag = true; 
    private MyThread freshThrad; 
    private final static int START_ANIMATION = 100; 
    private final static int STOP_ANIMATION = 101; 
    Handler mHandler = new Handler(){ 
 
        @Override 
        public void handleMessage(Message msg) { 
            // TODO Auto-generated method stub 
            super.handleMessage(msg); 
            switch(msg.what){