Fragment navigator

Fragment navigator is a simple way to navigate between fragments.

Features

• The transaction logic is in one place.
• Handles the transaction exception, when the application is in the background.
• Easy to use and to pass a custom object to the Fragment(See: FragmentC and FragmentD).
• The BaseFragmentActivity handles the onBackPressed event. When you want to handle the onBackPressed event inside your Fragment, your Fragment just need to override the OnBackPressed method and write there your navigation code. Note that it has to return true.
• If you have a navigation drawer in your Activity, after the navigation, the drawer will close automatically if you implement the OnCloseDrawer interface in your Activity. In the onCloseDrawer() method is coming your drawer`s close implementation.
• If you do not like the navigation implementation(StandardFragmentNavigationStrategy), you can write your own FragmentNavigation behavior.

Implementation steps

1. Extend your Activity the FragmentActivity class.
2. Override the getFragmentContainerID method and make it to return your fragment container layout id, which is placed in your activity`s xml.
3. Extend your Fragments the BaseFragment class.

How to use

public class MainActivity extends FragmentActivity {

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

        getNavigator().navigateTo(FragmentA.class);
    }

    @Override
    public int getFragmentContainerID() {
        return R.id.fragmentContainer;
    }
}

public class FragmentA extends BaseFragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        final View root = inflater.inflate(R.layout.fragment_a, null);

        root.findViewById(R.id.nextButton).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getNavigator().navigateTo(new FragmentB());
            }
        });
        return root;
    }
}

public class FragmentC extends BaseFragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View root = inflater.inflate(R.layout.fragment_c, null);

        root.findViewById(R.id.nextButton).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getNavigator().navigateTo(FragmentD.class, new FragmentDBehavior2());
            }
        });
        return root;
    }

    @Override
    public boolean onBackPressed() {
        getNavigator().navigateTo(FragmentB.class);
        return true;
    }
}

You can try it out with the above example or add it to your module level gradle file:

compile 'com.gabor.fragment-navigation:app:1.5.0'