Navigation Menu/Android Sliding Menu Sample

Hello All,

By this post I am gonna explain about how to integrate the Navigation Drawer like Facebook, Gmail, Google+ apps.

First you have to know whats mean by Navigation Drawer:

1. Navigation Drawer: 

The navigation drawer is a panel that displays the app’s main navigation options on the left edge of the screen. It is hidden most of the time, but is revealed when the user swipes a finger from the left edge of the screen or, while at the top level of the app, the user touches the app icon in the action bar.

you can get more info about this here. Good news is its now available in the SupportLibrary itself. 

How to Create the Drawer Layout ? 

To add a navigation drawer, declare your user interface with aDrawerLayout object as the root view of your layout. Inside theDrawerLayout, add one view that contains the main content for the screen (your primary layout when the drawer is hidden) and another view that contains the contents of the navigation drawer.

For example, the following layout uses a DrawerLayout with two child views: a FrameLayout to contain the main content (populated by a Fragment at runtime), and a ListView for the navigation drawer.

<android.support.v4.widget.DrawerLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:id="@+id/drawer_layout"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <!-- The main content view -->

    <FrameLayout

        android:id="@+id/content_frame"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

    <!-- The navigation drawer -->

    <ListView android:id="@+id/left_drawer"

        android:layout_width="240dp"

        android:layout_height="match_parent"

        android:layout_gravity="start"

        android:choiceMode="singleChoice"

        android:divider="@android:color/transparent"

        android:dividerHeight="0dp"

        android:background="#111"/>

</android.support.v4.widget.DrawerLayout>

Here is the code to do in MainActivity.java

public class MainActivity extends Activity {
    private DrawerLayout mDrawerLayout;
    private ActionBarDrawerToggle mDrawerToggle;
    ...

    public void onCreate(Bundle savedInstanceState) {
        ...

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerToggle = new ActionBarDrawerToggle(
                this,                  /* host Activity */
                mDrawerLayout,         /* DrawerLayout object */
                R.drawable.ic_drawer,  /* nav drawer icon to replace 'Up' caret */
                R.string.drawer_open,  /* "open drawer" description */
                R.string.drawer_close  /* "close drawer" description */
                ) {

            /** Called when a drawer has settled in a completely closed state. */
            public void onDrawerClosed(View view) {
                super.onDrawerClosed(view);
                getActionBar().setTitle(mTitle);
            }

            /** Called when a drawer has settled in a completely open state. */
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                getActionBar().setTitle(mDrawerTitle);
            }
        };

        // Set the drawer toggle as the DrawerListener
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Pass the event to ActionBarDrawerToggle, if it returns
        // true, then it has handled the app icon touch event
        if (mDrawerToggle.onOptionsItemSelected(item)) {
          return true;
        }
        // Handle your other action bar items...

        return super.onOptionsItemSelected(item);
    }

    ...
}

You can load multiple no of Fragments into the NavigationDrawer like as follow 

/**

* Diplaying fragment view for selected nav drawer list item

* */

private void displayView(int position) {

// update the main content by replacing fragments

Fragment fragment = null;

switch (position) {

case 0:

fragment = new HomeFragment();

break;

case 1:

fragment = new FindPeopleFragment();

break;

case 2:

fragment = new PhotosFragment();

break;

case 3:

fragment = new CommunityFragment();

break;

case 4:

fragment = new PagesFragment();

break;

case 5:

fragment = new WhatsHotFragment();

break;

default:

break;

}

if (fragment != null) {

FragmentManager fragmentManager = getFragmentManager();

fragmentManager.beginTransaction()

.replace(R.id.frame_container, fragment).commit();

// update selected item and title, then close the drawer

// mDrawerList.setItemChecked(position, true);

//mDrawerList.setSelection(position);

setTitle(navMenuTitles[position]);

mDrawerLayout.closeDrawer(mDrawerList);

} else {

// error in creating fragment

Log.e("MainActivity", "Error in creating fragment");

}

}