commit fragment from onLoadFinished within activity

Question

I have an activity which loads a data list from the server using loader callbacks. I have to list out the data into a fragment which extends

SherlockListFra         


        

Answer 1

As @kwazi answered this is a bad user experience to call FragmentTransition.commit() from onLoadFinished(). I have found a solution for this event by using ProgressDialog.

First created ProgressDialog.setOnDismissListener(new listener) for watching the onLoadFinished(). Further i do progressDialog.show() before getLoaderManager().restartLoader(). And eventually place progressDialog.dismiss() in onLoadFinished(). Such approach allow do not bind main UI thread and Loader's thread.

public class FrPersonsListAnswer extends Fragment 
						   implements 
						   LoaderCallbacks{
private ProgressDialog progressDialog;
                             	@Override
	public View onCreateView(LayoutInflater inflater,
			 ViewGroup container, Bundle savedInstanceState) {
		View view = inflater.inflate(R.layout.fragment_persons_list, container, false);
		
		//prepare progress Dialog
		progressDialog = new ProgressDialog(curActivity);
		progressDialog.setMessage("Wait...");
		progressDialog.setIndeterminate(true);
		progressDialog.setOnDismissListener(new OnDismissListener() {
			
			@Override
			public void onDismiss(DialogInterface dialog) {
				//make FragmentTransaction.commit() here;
				
				//but it's recommended to pass control to your Activity 
				//via an Interface and manage fragments there.
			}
		});
		
		lv = (ListView) view.findViewById(R.id.lv_out1);
		lv.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView parent, final View view,
					final int position, long id) {
				
				//START PROGRESS DIALOG HERE
				progressDialog.show();
				
				Cursor c = (Cursor) parent.getAdapter().getItem(position);

				// create Loader 
				getLoaderManager().restartLoader(1,	null, curFragment);
			}
		});

		return view;
	}
    
	@Override
	public void onLoadFinished(Loader loader, Cursor data) {
		switch (loader.getId()) {
		case 1:
			//dismiss dialog and call progressDialog.onDismiss() listener
			progressDialog.dismiss();
			break;

		default:
			break;
		}
	}