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

SherlockListFragment 

i tried to commit the fragment using

Fragment newFragment   = CategoryFragment.newInstance(mStackLevel,categoryList);
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.add(R.id.simple_fragment, newFragment).commit();

in onLoadFinished and it gives an IllegalStateException saying

java.lang.IllegalStateException: Can not perform this action inside of onLoadFinished

I have referred the example in actionbar sherlock, but those examples have loaders within the fragments and not the activity.

Can anybody help me with this o that I can fix it without calling the loader from the fragment!

Answer 1

Atlast, I have found a solution to this problem. Create a handle setting an empty message and call that handler onLoadFinished(). The code is similar to this.

@Override
public void onLoadFinished(Loader<List<Station>> arg0, List<Station> arg1) {
    // do other actions
    handler.sendEmptyMessage(2);
}

In the handler,

private Handler handler = new Handler()  { // handler for commiting fragment after data is loaded
    @Override
    public void handleMessage(Message msg) {
        if(msg.what == 2) {
            Log.d(TAG, "onload finished : handler called. setting the fragment.");
            // commit the fragment
        }
    }
}; 

The number of fragments depend on the requirement.

This method can be mainly used in case of stackFragments, where all fragments have different related functions.