Call method between fragments that are in tabs

Question

Currently, I have several fragments that are all organized in tabs, and I want fragment A to call the method in fragment B. So I know that I need to call an action that then calls the function in B, I saw people mentioning use

ExampleFragment fragment = (ExampleFragment)  
 getFragmentManager().findFragmentById(R.id.example_fragment);


fragment.<specific_function_name>();

I have a problem, but since my fragments are added using the tab listener, and not for the fragment manager, I don’t know how to use this to call the method. Here's how my tabs are added.

public class fifaActivity extends Activity {


public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    final ActionBar bar = getActionBar();
    bar.setTitle(TourneyName);
    bar.setDisplayHomeAsUpEnabled(true);
    bar.setIcon(R.drawable.fifa);
    bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);


        bar.addTab(bar
            .newTab()
            .setText("Tables")
            .setTabListener(
                    new TabListener<fifa.tables>(this, "tables",
                            fifa.tables.class)));

        bar.addTab(bar
            .newTab()
            .setText("Knockouts")
            .setTabListener(
                    new TabListener<fifa.knockouts>(this, "tables",
                            fifa.knockouts.class)));




    if (savedInstanceState != null) {
        bar.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0));
    }
}

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putInt("tab", getActionBar().getSelectedNavigationIndex())

}

public static class TabListener<T extends Fragment> implements
        ActionBar.TabListener {
    private final Activity mActivity;
    private final String mTag;
    private final Class<T> mClass;
    private final Bundle mArgs;
    private Fragment mFragment;

    public TabListener(Activity activity, String tag, Class<T> clz) {
        this(activity, tag, clz, null);
    }

    public TabListener(Activity activity, String tag, Class<T> clz,
            Bundle args) {
        mActivity = activity;
        mTag = tag;
        mClass = clz;
        mArgs = args;

        mFragment = mActivity.getFragmentManager().findFragmentByTag(mTag);
        if (mFragment != null && !mFragment.isDetached()) {
            FragmentTransaction ft = mActivity.getFragmentManager()
                    .beginTransaction();
            ft.detach(mFragment);
            ft.commit();
        }
    }

    public void onTabSelected(Tab tab, FragmentTransaction ft) {
        if (mFragment == null) {
            mFragment = Fragment.instantiate(mActivity, mClass.getName(),
                    mArgs);
            ft.add(android.R.id.content, mFragment, mTag);
        } else {
            ft.attach(mFragment);
        }
    }

    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
        if (mFragment != null) {
            ft.detach(mFragment);
        }
    }

    public void onTabReselected(Tab tab, FragmentTransaction ft) {

    }


}

Any help on how to call the method from the fifa.tables snippet to the fifa.knockouts snippet would be greatly appreciated.

Thanks, Olya

Answer 1

, . A Activity , B, . Activity B.

Edit:

.

, " A" " B", :

public interface FragmentBMethodsCaller{
    void callTheMethodInFragmentB();
}

. , HostActivity:

public class HostActivity extends Activity implements FragmentBMethodsCaller{
    ...
    public void callTheMethodInFragmentB(){
         --Implementation--
    }
    ...
}

, , A:

FragmentBMethodsCaller fbmc = (FragmentBMethodsCaller)getActivity();
fbmc.callTheMethodInFragmentB();

.