Switching To A Specific Fragment Gives Strange Java.lang.nullpointerexception

Here is the problem i am currently facing. I have switched from Eclipse with ADT plugin to Android Studio recently and an error i never encountered on Eclipse appeared with Android

Solution 1:

just check whether getItem() was returning null for a Fragment. if so set a default Fragment!

Solution 2:

I managed to solve the problem by overrinding the onDestroy method in my map fragment.

@Overridepublic void onDestroyView() {
    super.onDestroyView();

    if (this.mapFrag != null
            && getFragmentManager().findFragmentById(
            this.mapFrag.getId()) != null) {

        getFragmentManager().beginTransaction().remove(this.mapFrag)
                .commit();
        this.mapFrag = null;
    }
}

Solution 3:

I found another decision, try to use Fragments extending android.support.v4.app.Fragment instead of android.app.Fragment and use the android.app.FragmentTransaction instead of android.support.v4.app.FragmentTransaction

I found a solution in this post:

Trying to remove fragment from view gives me NullPointerException on mNextAnim