PopupWindow $BadTokenException: Unable to add window — token null is not valid

Question

I have the following error when showing a PopupWindow. The errors are triggered by the line:

checkInPopup.showAtLocation((ViewGroup) mapView.getParent(), Gra         


        

Answer 1

use this method before show

public static ViewGroup getActivityFirstLayout(Context ctx)
{
    return (ViewGroup)((ViewGroup) ActivityMaster.getActivity(ctx).findViewById(android.R.id.content)).getChildAt(0);
}

private boolean activityIsOk(Activity activity)
{
    boolean s1 = !(activity == null || activity.isFinishing());

    if(s1)
    {
        View v = LayoutMaster.getActivityFirstLayout(activity);
        return v.isShown() && ViewCompat.isLaidOut(v);
    }

    return false;
}