Refresh the Fragment on dismiss of Dialogue fragment

问题

There is some synch process on server that updates the database and I want to refresh the parent activity on click of dialogue dismiss to get the synched values in a view.

I have three fragments- FragmentA.java, FragmentB.java and ragmentC.java

In FragmentA.java, I have public interface OnEntrySelectedListener which have method getDialog() and other fragment class FragmentB.java implements this interface and have definition for getDialog() method.

FragmentA.java

class FragmentA extends Fragment
{
  public interface OnEntrySelectedListener
  {
    getDialog();
  }
}

FragmentB.java

 class FragmentB extends FragmentActivity implements FragmentA.OnEntrySelectedListener
   {
     @Override
    public void getDialog(Bundle bundle) {
        FragmentC cf = new FragmentC(); 
        cf.setArguments(bundle);
        cf.show(getSupportFragmentManager(), "dialog");
        }
    }

FragmentC.java

class FragmentC extends DialogFragment {
        @Override
    public void onCreate(Bundle savedInstanceState) {
        //some code here
        }

    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) 
    {
    view = inflater.inflate(R.layout.shared,container, false);
        view.findViewById(R.id.button1).setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) 
        {
          getDialog().dismiss(); //Here after dismiss, I want to refresh FragmentA
         }
     });
         return view;


 }

Now I want to refresh the FragmentA on dismiss of FragmentC.

回答1:

You can add an interface and callback to C to do something like this:

  @Override
  public void onDismiss(DialogInterface dialog) {
    if (getActivity() != null && getActivity() instanceof Dismissed) {
      ((Dismissed) getActivity()).dialogDismissed();
    }
    super.onDismiss(dialog);
  }

  public interface Dismissed {
    public void dialogDismissed();
  }

Then in the main activity you can implement the interface and when you get the call you forward it to fragment A.

You could also fire a refresh event that FragmentA would listen to.

来源：https://stackoverflow.com/questions/15619065/refresh-the-fragment-on-dismiss-of-dialogue-fragment