【Android控件】呼吸效果的动画

由于只是展示上的，就不需要使用属性动画。直接使用的补间动画，简单的动画。

public class MainActivity extends Activity {private ImageView mImageView;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mImageView = (ImageView) findViewById(R.id.testview); // 普通的imageviewmImageView.setOnLongClickListener(new OnLongClickListener() {@Overridepublic boolean onLongClick(View v) {hideRepeatBtn();return false;}});mImageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {showRepeatBtn();}});showRepeatBtn();}/*** 显示呼吸效果动画*/private void showRepeatBtn() {mImageView.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {// 触摸时取消动画，并缩小，有按下的感觉if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE) {mImageView.setScaleX(0.9f);mImageView.setScaleY(0.9f);if (mImageView.getAnimation() != null) {mImageView.getAnimation().cancel();}} else { // 松手后，恢复大小，并继续呼吸效果mImageView.setScaleX(1.0f);mImageView.setScaleY(1.0f);if (mImageView.getAnimation() != null) {mImageView.getAnimation().start();}}return false;}});// 放大小时view，完全显示后开始呼吸效果ScaleAnimation enterAnim = new ScaleAnimation(0f, 1.1f, 0f, 1.1f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);enterAnim.setDuration(300); // 默认只执行一遍enterAnim.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) { }@Overridepublic void onAnimationRepeat(Animation animation) { }@Overridepublic void onAnimationEnd(Animation animation) {ScaleAnimation anim = new ScaleAnimation(1.0f, 1.1f, 1.0f, 1.1f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);anim.setDuration(750);anim.setRepeatMode(Animation.REVERSE); // 放大并缩小，时间为750*2anim.setRepeatCount(Animation.INFINITE); // 无限循环mImageView.setAnimation(anim);mImageView.startAnimation(mImageView.getAnimation());}});mImageView.startAnimation(enterAnim);}/*** 动画隐藏连发按钮*/private void hideRepeatBtn() {// 缩小退出ScaleAnimation anim = new ScaleAnimation(1.1f, 0f, 1.1f, 0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);anim.setDuration(300);anim.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) { }@Overridepublic void onAnimationRepeat(Animation animation) { }@Overridepublic void onAnimationEnd(Animation animation) {if (mImageView.getAnimation() != null) {mImageView.getAnimation().cancel();}}});mImageView.startAnimation(anim);}}

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