CODEWITHSUNDEEP
androidtabsandroid-fragmentsactionbarsherlock
Hardik Joshi
Hardik Joshi

Reputation: 9507

How to manage multiple fragments inside single tab

I want to use multiple fragments inside single tab. my tab activity extends SherlockFragmentActivity.

Now i add first fragment for first tab in onTabChanged() method. and i replace another fragment from within first fragment in first tab. But no when i go to second tab and then again re-open first tab, state of first tab not maintained and first fragment become visible rather than second fragment of first tab.

I need help for how to maintain stake of fragments within single tab and how to pop up exiting fragment front within single tab.

Any body have idea ?

Upvotes: 3

Views: 2841

Answers (2)

Miron Ophir
Miron Ophir

Reputation: 109

Here is a sample code for managing multiple fragments in an activity:

public class MainActivity extends FragmentActivity {

private FragmentManager fragmentManager;
Fragment currentFragment;
Fragment1 initialFragment;
Fragment2 nextFragment;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    fragmentManager = getSupportFragmentManager();
    initialFragment = (Fragment1) fragmentManager.findFragmentById(R.id.initial_fragment);
    nextFragment = (Fragment2) fragmentManager.findFragmentById(R.id.next_fragment);
    nextFragment();
}

public void onNext(View v) {
    // User pressed next button on initial fragment
    showNextFragment();
}

private void showFragment(Fragment fragmentToShow) {
    Fragment[] fragments = { initialFragment, nextFragment /*... */ };
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    for(Fragment fragment : fragments) {
        if(fragment != fragmentToShow) {
            fragmentTransaction.hide(fragment);
        }
    }
    fragmentTransaction.show(fragmentToShow);
    fragmentTransaction.commit();
}

private void showInitialFragment() {
    currentFragment = initialFragment;
    showFragment(currentFragment);
}

private void showNextFragment() {
    currentFragment = nextFragment;
    showFragment(currentFragment);
}

}

Upvotes: 0

Gangadhar Nimballi
Gangadhar Nimballi

Reputation: 1534

If you are using two tabs, you have to maintain two fragments separately for each tab i.e FragmentA for tab1 and FragmentB for tab2 and xmls of FragmentA , FragmentB should have FrameLayout for FrgmentTransaction.

xml of FragmentA i.e frag_a.xml :

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragmentA_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</FrameLayout>

and

xml of FragmentB i.e frag_b.xml :

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragmentB_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</FrameLayout>

For Tab1, always do the transaction using R.id.fragmentA_container. i.e replace another fragment from within first fragment(FragmentA) in first tab. like below code

In FragmentA:

Fragment fragment = new YourFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
getSupportFragmentManager().popBackStack();
fragment.setArguments(null);
ft.replace(R.id.fragmentA_container, fragment);
ft.commit();

For Tab2, always do the transaction using R.id.fragmentB_container. i.e replace another fragment from within secondfragment(FragmentB) in second tab. like below code

In FragmentB:

Fragment fragment = new YourFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
getSupportFragmentManager().popBackStack();
fragment.setArguments(null);
ft.replace(R.id.fragmentB_container, fragment);
ft.commit();

Upvotes: 1

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