How can I start layoutAnimation when(before) leaving an activity

Question

I have a LinearLayout View in my activity.

When I press back button I want LinearLayout's children to slide out.

I have the following code which doesn't do anything:

private void SlideOut()
{
    LayoutAnimationController controller = AnimationUtils.loadLayoutAnimation(this, R.anim.layout_animation_row_slide_out);
    Animation animation=controller.getAnimation();
    animation.setFillAfter(true);
    LinearLayout menuLayout =((LinearLayout)findViewById(R.id.menuLayout));
    menuLayout.setLayoutAnimation(controller);
    menuLayout.startLayoutAnimation();
}

@Override
public void onBackPressed(){
    //super.onBackPressed();
    SlideOut();     
}

I have commented out super.OnBackPressed() to see if the animation starts, and it don't start.

Somebody with similar problems ?

SlideOut method is working when I'm calling it from a button onClick... — Ionica, Nov 06 '11 at 14:31

score 0 · Answer 1 · answered Sep 16 '12 at 21:06

0

I think you might be exiting the activity before animation is finished. Try implementing Animation Listener

answered Sep 16 '12 at 21:06

urSus

12,492
12
69
89

score 0 · Answer 2 · answered Nov 06 '11 at 14:44

0

check if SlideOut() is called in onBackPressed - i'm guessing your back press is being handled elsewhere - possibly by the virtual keyboard

answered Nov 06 '11 at 14:44

josephus

8,284
1
37
57

I have checked it with a break point and it runs the SlideOut() method, but nothing occur. – Ionica Nov 06 '11 at 14:50

Android Killer · Answer 3 · 2011-11-06T15:03:35.527

0

try this.it may help you:

public boolean onKeyDown(int keyCode, KeyEvent event) {
    // TODO Auto-generated method stub

    if(keyCode==KeyEvent.KEYCODE_BACK){
    SlideOut();
    return true;
    }else{
        return false;
    }

    //return super.onKeyDown(keyCode, event);

}

can u just change the code here here :

private void SlideOut()
{
    Animation controller = AnimationUtils.loadLayoutAnimation(this, R.anim.layout_animation_row_slide_out);
   // Animation animation=controller.getAnimation();
    animation.setFillAfter(true);
    LinearLayout menuLayout =((LinearLayout)findViewById(R.id.menuLayout));
    menuLayout.startAnimation(controller);

}

edited Nov 06 '11 at 15:03

answered Nov 06 '11 at 14:47

Android Killer

18,174
13
67
90

Thanks, still don't work and again, the method was called (tested with breakpoint) – Ionica Nov 06 '11 at 14:55
SlideOut() method is called on a button onClick event and it's working – Ionica Nov 06 '11 at 15:01
R.anim.layout_animation_row_slide_out is a LayoutAnimation, I must load it with loadLayoutAnimation, and I can't assign it to an Animation object. – Ionica Nov 06 '11 at 15:08
Try it to implement inside onPause() method.let's see – Android Killer Nov 06 '11 at 15:10
Thanks anyway, I'm giving up for today :) – Ionica Nov 06 '11 at 15:52

How can I start layoutAnimation when(before) leaving an activity

3 Answers3

Linked