Android之仿心跳动画实现

// 按钮模拟心脏跳动private void playHeartbeatAnimation() {AnimationSet animationSet = new AnimationSet(true);animationSet.addAnimation(new ScaleAnimation(1.0f, 1.8f, 1.0f, 1.8f,Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,0.5f));animationSet.addAnimation(new AlphaAnimation(1.0f, 0.4f));animationSet.setDuration(200);animationSet.setInterpolator(new AccelerateInterpolator());animationSet.setFillAfter(true);animationSet.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {}@Overridepublic void onAnimationRepeat(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {AnimationSet animationSet = new AnimationSet(true);animationSet.addAnimation(new ScaleAnimation(1.8f, 1.0f, 1.8f,1.0f, Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF, 0.5f));animationSet.addAnimation(new AlphaAnimation(0.4f, 1.0f));animationSet.setDuration(600);animationSet.setInterpolator(new DecelerateInterpolator());animationSet.setFillAfter(false);                                // 实现心跳的ViewimageView.startAnimation(animationSet);}});                 // 实现心跳的ViewimageView.startAnimation(animationSet);}

由于这是一个循环的动画，所以需要开一个线程来进行动画的实现，当然还有另外一个方法，就是在一个动画结束开始另一个动画，在另一个动画结束开始这个动画也可以，这边示例用的是线程。

new Thread(){public void run() {while (true){try {Thread.sleep(1000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}runOnUiThread(new Runnable() {public void run() {playHeartbeatAnimation();}});}};}.start();

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