仿微信的语音点击播放时的语音图标动画效果

由于最近很忙，随后上完整工程!

效果：

可能需要的图片：

需要定义的实例变量：

 //语音动画控制器
 Timer mTimer=null;
 //语音动画控制任务
 TimerTask mTimerTask=null;
 //记录语音动画图片
 int index=1;
 AudioAnimationHandler audioAnimationHandler=null;

需要定义的函数：

主要代码：

 /**
      * 播放语音图标动画
      */
     private void playAudioAnimation(final ImageView imageView) {
         //定时器检查播放状态
         stopTimer();
         mTimer=new Timer();
         //将要关闭的语音图片归位
         if(audioAnimationHandler!=null)
         {
             Message msg=new Message();
             msg.what=3;
             audioAnimationHandler.sendMessage(msg);
         }

         audioAnimationHandler=new AudioAnimationHandler(imageView);
         mTimerTask = new TimerTask() {
             public boolean hasPlayed=false;
             @Override
             public void run() {
                 if(mMediaPlayer.isPlaying()) {
                     hasPlayed=true;
                     index=(index+1)%3;
                     Message msg=new Message();
                     msg.what=index;
                     audioAnimationHandler.sendMessage(msg);
                 }else
                 {
                     //当播放完时
                     Message msg=new Message();
                     msg.what=3;
                     audioAnimationHandler.sendMessage(msg);
                     //播放完毕时需要关闭Timer等
                     if(hasPlayed)
                     {
                         stopTimer();
                     }
                 }
             }
         };
         //调用频率为500毫秒一次
         mTimer.schedule(mTimerTask, 0, 500);
     }
     class AudioAnimationHandler extends Handler
     {
         ImageView imageView;
         //判断是左对话框还是右对话框
         boolean isleft;
         public AudioAnimationHandler(ImageView imageView)
         {
             this.imageView=imageView;
             //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
             isleft=imageView.getScaleType()==ScaleType.FIT_START?true:false;
         }
         @Override
         public void handleMessage(Message msg) {
             super.handleMessage(msg);
             //根据msg.what来替换图片，达到动画效果
             switch (msg.what) {
                 case 0 :
                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f1:R.drawable.chatto_voice_playing_f1);
                     break;
                 case 1 :
                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f2:R.drawable.chatto_voice_playing_f2);
                     break;
                 case 2 :
                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f3:R.drawable.chatto_voice_playing_f3);
                     break;
                 default :
                     imageView.setImageResource(isleft?R.drawable.chatfrom_voice_playing_f3:R.drawable.chatto_voice_playing_f3);
                     break;
             }
         }

     }
     /**
      * 停止
      */
      private void stopTimer(){
             if (mTimer != null) {
                 mTimer.cancel();
                 mTimer = null;
             }

             if (mTimerTask != null) {
                 mTimerTask.cancel();
                 mTimerTask = null;
             }

         }