Created
January 14, 2023 20:51
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Scale press effect for your views
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| package vadiole.presseffect | |
| import android.annotation.SuppressLint | |
| import android.view.MotionEvent | |
| import android.view.View | |
| import android.view.View.OnTouchListener | |
| import android.view.ViewPropertyAnimator | |
| import android.view.animation.AccelerateDecelerateInterpolator | |
| @SuppressLint("ClickableViewAccessibility") | |
| object ScalePressEffect : OnTouchListener { | |
| private const val pressScaleDuration = 150L | |
| private const val releaseScaleDuration = 100L | |
| private const val delayBeforeRelease = 50L | |
| private const val scaleReleased = 1f | |
| private const val scalePressed = 0.9f | |
| private val pressInterpolator = AccelerateDecelerateInterpolator() | |
| private val releaseInterpolator = AccelerateDecelerateInterpolator() | |
| override fun onTouch(v: View, event: MotionEvent): Boolean { | |
| when (event.actionMasked) { | |
| MotionEvent.ACTION_DOWN -> { | |
| v.animate().cancel() | |
| getPressAnimation(v).start() | |
| } | |
| MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> { | |
| // A little hack to give a time for press animation to finish | |
| if (v.animate().interpolator == pressInterpolator) { | |
| v.animate() | |
| .setDuration(delayBeforeRelease) | |
| .withEndAction { | |
| getReleaseAnimation(v).start() | |
| } | |
| .start() | |
| } else { | |
| getReleaseAnimation(v).start() | |
| } | |
| } | |
| } | |
| return false | |
| } | |
| private fun getReleaseAnimation(v: View): ViewPropertyAnimator { | |
| return v.animate() | |
| .setStartDelay(0) | |
| .setInterpolator(releaseInterpolator) | |
| .scaleX(scaleReleased) | |
| .scaleY(scaleReleased) | |
| .setDuration(releaseScaleDuration) | |
| .withLayer() | |
| } | |
| private fun getPressAnimation(view: View): ViewPropertyAnimator { | |
| return view.animate() | |
| .setStartDelay(0) | |
| .setInterpolator(pressInterpolator) | |
| .scaleX(scalePressed) | |
| .scaleY(scalePressed) | |
| .setDuration(pressScaleDuration) | |
| .withLayer() | |
| .withEndAction { | |
| view.animate().interpolator = releaseInterpolator | |
| } | |
| } | |
| } |
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