Why is Android O failing with “does not belong to this FragmentManager!”

Question

I have migrated my application to Android O in Android Studio 3

Running on an Android O emulator all my dialogFragments now fail with :-

java.lang.I         


        

Answer 1

my app work well until upgrade target version to 27 then i face same issue when call setTargetFragment (Fragment fragment, int requestCode)

example:

chooseRegionFragment.setTargetFragment(ParentFragment.this, REQUEST_CODE_CHOOSE_REGION); 

just change to:

chooseRegionFragment.setTargetFragment(getRootParentFragment(this), REQUEST_CODE_CHOOSE_REGION);

getRootParentFragment(this) this method will find root parent of fragments for you

/** 
   * find root parent of fragment 
   */ 
  public static Fragment getRootParentFragment(Fragment fragment) { 
    Fragment parent = fragment.getParentFragment(); 
    if(parent == null) 
      return fragment; 
    else 
      return getRootParentFragment(parent); 
  }