仿微信的语音点击播放时的语音图标动画效果

效果：

可能需要的图片：

需要定义的实例变量：

[java] view plain copy

1. //语音动画控制器  
2. Timer mTimer=null;  
3. //语音动画控制任务  
4. TimerTask mTimerTask=null;  
5. //记录语音动画图片  
6. int index=1;  
7. AudioAnimationHandler audioAnimationHandler=null;  

需要定义的函数：

代码：

[java] view plain copy

1. /** 
2.      * 播放语音图标动画 
3.      */  
4.     private void playAudioAnimation(final ImageView imageView) {  
5.         //定时器检查播放状态     
6.         stopTimer();  
7.         mTimer=new Timer();  
8.         //将要关闭的语音图片归位  
9.         if(audioAnimationHandler!=null)  
10.         {  
11.             Message msg=new Message();  
12.             msg.what=3;  
13.             audioAnimationHandler.sendMessage(msg);  
14.         }  
15.           
16.         audioAnimationHandler=new AudioAnimationHandler(imageView);  
17.         mTimerTask = new TimerTask() {   
18.             public boolean hasPlayed=false;  
19.             @Override      
20.             public void run() {       
21.                 if(mMediaPlayer.isPlaying()) {    
22.                     hasPlayed=true;  
23.                     index=(index+1)%3;  
24.                     Message msg=new Message();  
25.                     msg.what=index;  
26.                     audioAnimationHandler.sendMessage(msg);  
27.                 }else  
28.                 {  
29.                     //当播放完时  
30.                     Message msg=new Message();  
31.                     msg.what=3;  
32.                     audioAnimationHandler.sendMessage(msg);  
33.                     //播放完毕时需要关闭Timer等  
34.                     if(hasPlayed)  
35.                     {  
36.                         stopTimer();  
37.                     }  
38.                 }  
39.             }  
40.         };  
41.         //调用频率为500毫秒一次  
42.         mTimer.schedule(mTimerTask, 0, 500);  
43.     }  
44.     class AudioAnimationHandler extends Handler  
45.     {  
46.         ImageView imageView;  
47.         //判断是左对话框还是右对话框  
48.         boolean isleft;  
49.         public AudioAnimationHandler(ImageView imageView)  
50.         {  
51.             this.imageView=imageView;  
52.             //判断是左对话框还是右对话框 我这里是在前面设置ScaleType来表示的  
53.             isleft=imageView.getScaleType()==ScaleType.FIT_START?true:false;  
54.         }  
55.         @Override  
56.         public void handleMessage(Message msg) {  
57.             super.handleMessage(msg);  
58.             //根据msg.what来替换图片，达到动画效果  
59.             switch (msg.what) {  
60.                 case 0 :  
61.                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f1:R.drawable.chatto_voice_playing_f1);  
62.                     break;  
63.                 case 1 :  
64.                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f2:R.drawable.chatto_voice_playing_f2);  
65.                     break;  
66.                 case 2 :  
67.                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f3:R.drawable.chatto_voice_playing_f3);  
68.                     break;  
69.                 default :  
70.                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f3:R.drawable.chatto_voice_playing_f3);  
71.                     break;  
72.             }  
73.         }  
74.           
75.     }  
76.     /** 
77.      * 停止 
78.      */  
79.      private void stopTimer(){    
80.             if (mTimer != null) {    
81.                 mTimer.cancel();    
82.                 mTimer = null;    
83.             }    
84.         
85.             if (mTimerTask != null) {    
86.                 mTimerTask.cancel();    
87.                 mTimerTask = null;    
88.             }     
89.   
90.         }