Set Initial Fragment on startup

Question

I am trying to set which fragment should be displayed first on start up. To determine this I check whether the user is logged in with ParseUser.getCurrentUser() and if a fil

Answer 1

To handle the default selection of the fragment in Your MainActivity, you need to do the following:

• In the MainActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mNavigationDrawerFragment = (NavigationDrawerFragment)
            getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
    mTitle = getTitle();

    int selectedSection = getIntent().getIntExtra(EXTRA_PARAMS_ID, 0);

    // Set up the drawer.
    mNavigationDrawerFragment.setUp(
            R.id.navigation_drawer,
            (DrawerLayout) findViewById(R.id.drawer_layout), selectedSection);
    mNavigationDrawerFragment.selectItem(selectedSection);
}


@Override
public void onNavigationDrawerItemSelected(int position) {
    // update the main content by replacing fragments
    // You could switch over different positions to show the right fragment
    FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction()
            .replace(R.id.container, YourFragment.newInstance(position))
                    .commit();
}

public void onSectionAttached(int position) {
    final String[] sections = getResources().getStringArray(R.array.sections);
    if (sections.length > position)
        mTitle = sections[position];
    getSupportActionBar().setTitle(mTitle);
}

• In the NavigationDrawerFragment remove the selectItem(mCurrentSelectedPosition); from the onCreate()