NPE when using an Animation on a View

[fmweigl]

I use this code inside getView to animate the deletion of an item from my Adapter (extends BaseAdapter implements StickyGridHeadersBaseAdapter):

final View myView = holder.root; // Any view from the inflated item layout

holder.Deletebtn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            Animation anim = AnimationUtils.loadAnimation(ctx,
                    android.R.anim.slide_out_right);

            anim.setAnimationListener(new Animation.AnimationListener() {

                @Override
                public void onAnimationStart(Animation animation) {
                }

                @Override
                public void onAnimationRepeat(Animation animation) {
                }

                @Override
                public void onAnimationEnd(Animation animation) {

                    removeTheItemFromTheUnderlyingListOfItems(); 
                    notifyDataSetChanged(); 

                }
            });

            myView.startAnimation(anim);

        }
    });

This works when setting

StickyGridHeadersGridView gv = ...
gv.setAreHeadersSticky(false); 

else it fails with:

FATAL EXCEPTION: main
java.lang.NullPointerException
at com.tonicartos.widget.stickygridheaders.StickyGridHeadersGridView.dispatchDraw(StickyGridHeadersGridView.java:748)
at android.view.View.draw(View.java:11180)
at android.widget.AbsListView.draw(AbsListView.java:3769)

I don't know if this is a bug or I'm doing something wrong, but my code works for standard GridViews and ListViews.

[TonicArtos]

There are probably all sorts of things wrong with animations. I want to get the header view hierarchy problem resolved before I tackle this.

[TonicArtos]

It is possible that this issue has been resolved. I'd appreciated it if you could try your code with the latest changes in master. Thanks.

[fmweigl]

I will try it and give feedback, thanks.