NullPointerException on make view

[Zerosouth]

java.lang.NullPointerException
at com.etsy.android.grid.ExtendableListView.getLastVisiblePosition(ExtendableListView.java:1830)
at android.widget.AdapterView.onInitializeAccessibilityEvent(AdapterView.java:957)
at android.widget.AbsListView.onInitializeAccessibilityEvent(AbsListView.java:1488)
at android.view.View.sendAccessibilityEventUncheckedInternal(View.java:4936)
at android.view.View.sendAccessibilityEventUnchecked(View.java:4923)
at android.view.View$SendViewStateChangedAccessibilityEvent.run(View.java:19486)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5086)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)

[denizmveli]

A stacktrace is great when accompanied with an explanation of how that exception was created. Can you help me out here?

[Zerosouth]

I was AndroidStaggeredGridView using programmatically in fragment.

and..

mSGV = new StaggeredGridView(ctx);
mSGV.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

footerView = inflater.inflate(R.layout.footer_trends_ave_list, null);
mSGV.setFooterView(footerView);

int margin = getResources().getDimensionPixelSize(R.dimen.margin);
mSGV.setItemMargin(margin);
mSGV.setPadding(margin, 0, margin, 0);

mSGV.setOnScrollListener(this);
mSGV.setAdapter(trendsAdapter);
layout.addView(mSGV);

and..
trendsAdapter.notifyDataSetChanged();

However, this error does not appear in any device android 4.4 (Kitkat) occurs in some devices.

[denizmveli]

Duplicate of #45 - closing to manage this there.