onAnimationRepeat（）永远不会被调用

Question

我在我的应用中使用视图动画。这是动画文件

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <scale
        android:duration="1500"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:repeatCount="infinite"
        android:toXScale="7.0"
        android:toYScale="7.0"
        />

    <alpha
        android:duration="600"
        android:fromAlpha="1.0"
        android:repeatCount="infinite"
        android:startOffset="900"
        android:toAlpha="0.0" />
</set>

以下是用于在视图上设置动画的kotlin代码。

    val connectingAnimationWave1 = AnimationUtils.loadAnimation(activity, R.anim.anim_otp_wave_1)

    connectingAnimationWave1.repeatCount = Animation.INFINITE
    connectingAnimationWave1.repeatMode = Animation.INFINITE


    connectingAnimationWave1.setAnimationListener(object : Animation.AnimationListener{
        override fun onAnimationRepeat(p0: Animation?) {
            Log.d("MyAnimListener", "Repeat "+ p0!!.startOffset)
        }

        override fun onAnimationEnd(p0: Animation?) {
            Log.d("MyAnimListener", "End "+ p0!!.startOffset)
        }

        override fun onAnimationStart(p0: Animation?) {
            Log.d("MyAnimListener", "Start "+ p0!!.startOffset)
        }

    })

    view_wave_1.animation = (connectingAnimationWave1)

问题在于我没有得到onAnimationRepeat()永远不会被调用。只有onAnimationStart()被调用。此外，如果我运行一个线程5秒然后清除动画，那么onAnimationEnd()也会被调用。永远不会调用onAnimationRepeat()。