我試圖讓兩個視圖移動到螢屏中間并再次反彈 x 次。
這段代碼可以做到這一點，但它只運行一次。` val view = findViewById(R.id.imageView2)
val animation = SpringAnimation(view, DynamicAnimation.TRANSLATION_Y, 0f)
val view2 = findViewById<View>(R.id.imageView3)
val animation2 = SpringAnimation(view2, DynamicAnimation.TRANSLATION_Y, 0f)
findViewById<View>(R.id.imageView2).also { img ->
SpringAnimation(img, DynamicAnimation.TRANSLATION_Y).apply {
animation.getSpring().setDampingRatio(SpringForce.DAMPING_RATIO_HIGH_BOUNCY)
animation.spring.stiffness = SpringForce.STIFFNESS_VERY_LOW
animation.animateToFinalPosition(50f)
}
}
findViewById<View>(R.id.imageView3).also { img ->
SpringAnimation(img, DynamicAnimation.TRANSLATION_Y).apply {
animation2.getSpring().setDampingRatio(SpringForce.DAMPING_RATIO_HIGH_BOUNCY)
animation2.spring.stiffness = SpringForce.STIFFNESS_VERY_LOW
animation2.animateToFinalPosition(-100f)
}
}`
那么如何讓它運行 x 次呢？這顯然是春季影片，但我沒有嫁給它。如果有另一個影片可以實作這一點，我會完全愿意改變。
uj5u.com熱心網友回復：
您可以通過使用一系列翻譯值重復呼叫來在同一個上運行多個SpringAnimations 。ViewanimateToFinalPosition(translation)
例如：
startSpringAnimations(findViewById<View>(R.id.imageView1), 300f, 6)
startSpringAnimations(findViewById<View>(R.id.imageView2), -600f, 6)
有一個功能
/**
* [view] will be moved using [times] SpringAnimations over a distance of abs([totalTranslation])
* If [totalTranslation] is negative, direction will be up, else down
*/
private fun startSpringAnimations(view: View, totalTranslation: Float, times: Int ) {
if(times <= 0){
return
}
val translation = totalTranslation/ times.toFloat()
SpringAnimation(view, DynamicAnimation.TRANSLATION_Y, 0f).apply{
spring.dampingRatio = SpringForce.DAMPING_RATIO_HIGH_BOUNCY
spring.stiffness = SpringForce.STIFFNESS_VERY_LOW
addEndListener(object: DynamicAnimation.OnAnimationEndListener{
private var count = 1
override fun onAnimationEnd(animation1: DynamicAnimation<*>?, canceled: Boolean, value: Float, velocity: Float) {
Log.d("SpringAnimation", "onAnimationEnd: animation $animation1 canceled $canceled value $value velocity $velocity count $count")
if (canceled) return
count
if(count <= times){
animateToFinalPosition(translation * count)
}
}
})
animateToFinalPosition(translation)
}
}
uj5u.com熱心網友回復：
android:repeatCount="infinite"在影片檔案夾中設定
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