android: NullpointerException on startDrag() after animation
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I had the same problem. You basically need to either cancel() the animation or clearAnimation() from the View, before you will be able to Drag again. You can trigger this cleanup in the AnimationListener's onAnimationEnd(). I went with clearing the animation from the view, because canceling was creating multiple "images" of my view.
Exactly why you need to do this, I don't know.
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android animation crash caused by NullPointerException
Date : March 29 2020, 07:55 AM
may help you . I've been trying run an animation , but it crashes from some reason which I can't understand. In the log cat It writes because nullpointerexception. But I don't Understand what should I do\change about it. How can I fix this? Thanx! , Try this.. findViewById should contains id of ImageView ImageView duck = (ImageView) findViewById(R.drawable.duckwithswaves);
ImageView duck = (ImageView) findViewById(R.id.idofimageview);
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Android Animation : Is there some reference website for Android animation effect, how can I create this logo animation?
Date : March 29 2020, 07:55 AM
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Android java.lang.NullPointerException at animation end
Date : March 29 2020, 07:55 AM
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getting NullPointerException: Attempt to read from field 'int android.view.View.mViewFlags' - Android animation
Date : March 29 2020, 07:55 AM
around this issue As @sasikumar has mentioned the solution was to run the test on real device but also i solved it on the emulator also by adding postDelayed with 500 milliseconds delay before removing the view in the animation end listener: animatinSet.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
iv.setVisibility(View.GONE);
v_mainContainer.postDelayed(new Runnable() {
@Override
public void run() {
v_mainContainer.removeView(iv);
}
}, 500);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
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