How to Stop Event's While Animation is in process?

Question

I am working on Animating my view where i animate the translation and scaling of View.

Problem:

If my animation duration is for 2000 ms (2 Sec) i don't want any user event's to interfere in between animation.

Example if Double Tap on View Trigger's the Scaling Animation and scrolling trigger's Translation Animation.Both animation duration is 2 seconds,But if i double tap and scroll one after another it create's weird result.

So i want to stop event's when animation is going on.

Is there any easy solution without maintaining the state of OnGoing animation and overriding the onTouchEvent to disable events?

just keep everything disabled when you are animating and enable them again when your animation ends — Vivek Mishra, Dec 19 '18 at 06:46
@VivekMishra you mean disabling event's of the view based on the state of the animation? Is that the only approach? — Anmol, Dec 19 '18 at 09:16

score 1 · Answer 1 · answered Dec 19 '18 at 06:52

1

Lock UI from events:

private void lockUI() {
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
            WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);   
}

Unlock UI:

private void unlockUI() {
    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
}

answered Dec 19 '18 at 06:52

Liar

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I am trying to figure out solution from inside the View and Don't really prefer to go to activity/Fragment for each animation.Want to handle this case inside view itself. As i am in Single activity architecture this logic will complicate the flow. @Liar – Anmol Dec 19 '18 at 09:15

score 0 · Accepted Answer · answered Dec 21 '18 at 07:13

Solution that i used:

Created a State of Animation

 private var isAnimationOnGoing: Boolean = false

Setting the State in Animation Listener

translationAnimation.setAnimationListener(object : Animation.AnimationListener {
    override fun onAnimationRepeat(animation: Animation?) {
    }

    override fun onAnimationEnd(animation: Animation?) {
        isAnimationOnGoing = false
    }

    override fun onAnimationStart(animation: Animation?) {
        isAnimationOnGoing = true
    }
})

Use dispatchTouchEvent(ev: MotionEvent?) . to prevent event's to be received by the ViewGroup or by children's of ViewGroup

override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
    val dispatchTouchEvent = super.dispatchTouchEvent(ev)
    if (isAnimationOnGoing) {
        return false
    }
    return dispatchTouchEvent
  }

How to Stop Event's While Animation is in process?

2 Answers2