Android中的Ring Glow动画

<set xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="1000"
        android:repeatCount="infinite"
        android:repeatMode="restart" />
    <scale
        android:fromXScale="0.5"
        android:toXScale="1.0"
        android:fromYScale="0.5"
        android:toYScale="1.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="1000"
        android:repeatCount="infinite"
        android:repeatMode="restart" />
</set>

Animation ringGlowAnimation = AnimationUtils.loadAnimation(context, R.anim.ring_glow_animation);
view.startAnimation(ringGlowAnimation);