Android之仿心跳動畫實現

// 按鈕模擬心臟跳動
	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() {

			@Override
			public void onAnimationStart(Animation animation) {
			}

			@Override
			public void onAnimationRepeat(Animation animation) {
			}

			@Override
			public 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);

                                // 實現心跳的View
				imageView.startAnimation(animationSet);
			}
		});
 
                // 實現心跳的View
		imageView.startAnimation(animationSet);
	}    

 

由於這是一個循環的動畫，所以需要開一個線程來進行動畫的實現，當然還有另外一個方法，就是在一個動畫結束開始另一個動畫，在另一個動畫結束開始這個動畫也可以，這邊示例用的是線程。

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