Android View 呼吸动效

代码如下

private fun initPayBtnAnim(view: View) {
    val animationSet = AnimatorSet()
    view.pivotX = (view.width / 2).toFloat()
    view.pivotY = (view.height / 2).toFloat()
    val objectAnimator: ObjectAnimator = ObjectAnimator.ofFloat(view, View.SCALE_X, 0.95f, 1f, 1.05f, 0.95f)
    objectAnimator.repeatCount = ValueAnimator.INFINITE
    objectAnimator.repeatMode = ValueAnimator.RESTART
    val objectAnimator1: ObjectAnimator = ObjectAnimator.ofFloat(view, View.SCALE_Y, 0.95f, 1f, 1.05f, 0.95f)
    objectAnimator1.repeatCount = ValueAnimator.INFINITE
    objectAnimator1.repeatMode = ValueAnimator.RESTART

    animationSet.let {
        it.duration = 2000
        it.playTogether(objectAnimator, objectAnimator1)
        it.start()
    }
}

调用方法：

binging.imageView.post {
    initPayBtnAnim(binging.rlPay)
}

使用post 可以让View 动效以View的中心点的向四周缩放动画，如果在页面刚加载时，直接调用方法，则可能会因为View未加载完成导致动画是以View的左上角向右下缩放效果