Android实现微信聊天语言点击喇叭动画效果

package xxx;import android.os.Handler;import android.widget.ImageView;import xxx.R;import java.util.Timer;import java.util.TimerTask;public class VoicePlayingBgUtil {  private Handler handler;  private ImageView imageView;  private ImageView lastImageView;  private Timer timer = new Timer();  private TimerTask timerTask;  private int i;  private int modelType = 1;//类型  private int[] leftVoiceBg = new int[] { R.drawable.gray1, R.drawable.gray2, R.drawable.gray3 };  private int[] rightVoiceBg = new int[] { R.drawable.green1, R.drawable.green2, R.drawable.green3 };  private int[] collectVoiceBg = new int[] { R.drawable.collect_voice_1, R.drawable.collect_voice_2, R.drawable.collect_voice_3 };  public VoicePlayingBgUtil(Handler handler) {    super();    this.handler = handler;  }  public void voicePlay() {    if (imageView == null) {      return;    }    i = 0;    timerTask = new TimerTask() {      @Override      public void run() {        if (imageView != null) {          if (modelType == 1) {            changeBg(leftVoiceBg[i % 3], false);          }else if(modelType==2){            changeBg(rightVoiceBg[i % 3], false);          }else if(modelType==3){            changeBg(collectVoiceBg[i % 3], false);          }        }        else {          return;        }        i++;      }    };    timer.schedule(timerTask, 0, 500);  }  public void stopPlay() {    lastImageView = imageView;    if (lastImageView != null) {      switch (modelType) {        case 1:          changeBg(R.drawable.gray3, true);          break;        case 2:          changeBg(R.drawable.green3, true);          break;        case 3:          changeBg(R.drawable.collect_voice_3, true);        default:          changeBg(R.drawable.gray3, true);          break;      }      if (timerTask != null) {        timerTask.cancel();      }    }  }  private void changeBg(final int id, final boolean isStop) {    handler.post(new Runnable() {      @Override      public void run() {        if (isStop) {          lastImageView.setImageResource(id);        }        else {          imageView.setImageResource(id);        }      }    });  }  public void setImageView(ImageView imageView) {    this.imageView = imageView;  }  public void setModelType(int modelType) {    this.modelType = modelType;  }}

 playBgUtil = new VoicePlayingBgUtil(handler); playBgUtil.stopPlay(); playBgUtil.voicePlay();