Interaction between two Fragments not working, but crashing app

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I've been trying to interact between two fragments, but it has not been successful. I have an Activity that holds two ListFragment. FragmentA downloads a JSON data and stores it in a ContentProvider and I load the Data from the CP and populate it on my ListView. The data downloaded and stored is needed by FragmentB. So, at first I did initialize the method to get the data from the ContentProvider stored in FragmentA. But, it's like it never does go into the fragmentB at all. So, I called the method loading the data from the *ContentProvider in FragmentB from FragmentA, and that crashes the App. I don't seem to know what to do atm. A senario of my code is below:

public class FragmentA extends ListFragment{

    public void downloadJson(){

    /...
    ....
    ..../

        loadContentProvider();
    }

    public void loadContentProvider(){

    /..../
    FragmentB frag = new FragmentB;
    frag.loadContentProvider();
    }
}

public class FragmentB extends ListFragment{

    public void loadContentProvider(){


    }
}

Just a way to notify FragmentB to load it data from the ContentProvider Thanks

asked 28 secs ago

user4054641

3

Interaction between two Fragments not working, but crashing app