getParentFragment API 16

user_191148 0
Viewed 4805

We all know getParentFragment of Fragment is introduced in API 17.

So what if we want to get parent fragment in API 16 and below (Considering that I use native Fragment with support FragmentStatePagerAdapter and have no problem with nested fragments)

Is there any better way than mine?

In parent:

public class ParentFragment extends Fragment {

public static ParentFragment StaticThis;
...

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

StaticThis = this;

...
}

In child:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
         parentFragment = (ParentFragment) getParentFragment();
else
         parentFragment = ParentFragment.StaticThis;
android-fragments android
3 Answers

Based on your comment if you want to talk back from the "items" in your ViewPager (I'm guessing this is a Fragment) to the container of the ViewPager which is a FragmentActivity you can use an interface.

(1) Either declar the interface in the Fragment itself or as a separate file (2) "Initialize" the inteface in your fragment's onAttach method. For example

 private SomeInterface blah;

 @Override
 public void onAttach(Activity activity){
    blah = (SomeInterface) activity;
 }

(3) Implement the interface in your FragmentActivity.

You can then callback to the FragmentActivity from your Fragment. From there you can call any method you want within the FragmentActivity or, if you get a reference to any of the other fragments that are loaded into your ViewPager, call any public method within that Fragment. This allows you to communicate between fragments and their container without a memory leak.

user_16787180
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