Abra el cajón de navegación haciendo clic en el icono de la aplicación

Quiero dejar que mi usuario abra el cajón de navegación haciendo clic en el icono de la aplicación. Este es mi código:

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_add); // Show the Up button in the action bar. DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.left_drawer); ActionBarDrawerToggle 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) { getActionBar().setTitle(R.string.title_activity_add); } /** Called when a drawer has settled in a completely open state. */ public void onDrawerOpened(View drawerView) { getActionBar().setTitle(R.string.drawer_title); } }; mDrawerLayout.setDrawerListener(mDrawerToggle); getActionBar().setDisplayHomeAsUpEnabled(true); // Pressing the app icon in the action bar will navigate to the parent activity. getActionBar().setHomeButtonEnabled(true); }

Pero cuando toco el icono, no pasa nada. Dónde está el problema.

Echa un vistazo aquí para un ejemplo de los documentos . Necesitas código adicional en

onPostCreate() para sincronizar su estado de gaveta
onOptionsItemSelected() para manejar el evento táctil del icono de la aplicación

onConfigurationChanged() para proporcionar la nueva configuración al cajón

 public class YourActivity extends Activity { public ActionBarDrawerToggle mDrawerToggle; @Override protected void onCreate(Bundle savedInstanceState) { ... mDrawerToggle = new ActionBarDrawerToggle(); ... } @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); } }

Debe anular onOptionsItemSelected de la actividad y utilizar esto:

 @Override public boolean onOptionsItemSelected(MenuItem item) { if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } return super.onOptionsItemSelected(item); }