学步园

 <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">
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <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="8dip"
        android:padding="12dip"
        android:listSelector="@android:color/transparent"
        android:scrollingCache="false"
        android:fadingEdge="none"
        android:scrollbars="none"
        android:background="@drawable/left_nav_title_bg" />
</android.support.v4.widget.DrawerLayout>

public class MainActivity extends SherlockFragmentActivity {
     private DrawerLayout mDrawerLayout;
     private ListView mDrawerList;
     private CharSequence mDrawerTitle;
     private CharSequence mTitle;
     private String[] mPlanetTitles;
     private SimpleAdapter mAdapter;
     private int mTag = 0;

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

           mTitle = mDrawerTitle = getTitle();
           mPlanetTitles = getResources().getStringArray(R.array.planets_array );
           mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout );
           mDrawerList = (ListView) findViewById(R.id.left_drawer );
           // set a custom shadow that overlays the main content when the drawer
           // opens
           mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
                   GravityCompat. START);
           // set up the drawer's list view with items and click listener
           mAdapter = new SimpleAdapter(this, getData(),
                   R.layout. drawer_list_item, new String[] { "text" },
                    new int [] { R.id.text, }) {

               @Override
               public View getView(int position, View convertView, ViewGroup parent) {
                   View view = super.getView(position, convertView, parent);
                    if (position == mTag ) {
                        view.setBackgroundResource(R.drawable. left_nav_channel_selected);
                   } else {
                        view.setBackgroundResource(R.drawable. list_item_selector);
                   }
                    return view;
              }

          };
           mDrawerList.setAdapter(mAdapter );
           mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
           // enable ActionBar app icon to behave as action to toggle nav drawer
          getSupportActionBar().setDisplayHomeAsUpEnabled( true);
          getSupportActionBar().setHomeButtonEnabled( true);
          getSupportActionBar().setLogo(R.drawable. device_access_storage);
           /*
           * To listen for drawer open and close events, call setDrawerListener()
           * on your DrawerLayout and pass it an implementation of
           * DrawerLayout.DrawerListener. This interface provides callbacks for
           * drawer events such as onDrawerOpened() and onDrawerClosed().
           */
           mDrawerLayout.setDrawerListener(new DrawerLayout.DrawerListener() {

               @Override
               public void onDrawerStateChanged(int arg0) {

              }

               @Override
               public void onDrawerSlide(View arg0, float arg1) {

              }
              
               /** Called when a drawer has settled in a completely closed state. */
               @SuppressLint("NewApi" )
               @Override
               public void onDrawerOpened(View arg0) {
                   getSupportActionBar().setTitle( mDrawerTitle);
                   invalidateOptionsMenu(); //creates call to onPrepareOptionsMenu()
              }
               /** Called when a drawer has settled in a completely open state. */
               @SuppressLint("NewApi" )
               @Override
               public void onDrawerClosed(View arg0) {
                   getSupportActionBar().setTitle( mTitle);
                   invalidateOptionsMenu(); //creates call to onPrepareOptionsMenu()
              }
          });

           if (savedInstanceState == null) {
              selectItem(0);
          }
     }

     private List<Map<String, Object>> getData() {
          List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
           for (int i = 0; i < mPlanetTitles. length; i++) {
              Map<String, Object> map = new HashMap<String, Object>();
              map.put( "text", mPlanetTitles [i]);
              list.add(map);
          }
           return list;
     }

     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
           boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList );
          menu.getItem(0).setVisible(!drawerOpen);
           return super .onPrepareOptionsMenu(menu);
     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
          menu.add( "Search")
                   .setIcon(R.drawable. action_search)
                   .setShowAsAction(
                             MenuItem. SHOW_AS_ACTION_IF_ROOM
                                      | MenuItem.SHOW_AS_ACTION_WITH_TEXT );
           return true ;
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
           /*when click the app icon change the drawer state*/
           if(item.getItemId() == android.R.id.home){
              changeDrawerState();
               return true ;
          }
           if (item.getTitle().equals("Search" )) {
              Intent intent = new Intent(Intent.ACTION_WEB_SEARCH );
              intent.putExtra(SearchManager. QUERY, getSupportActionBar()
                        .getTitle());
               // catch event that there's no activity to handle intent
               if (intent.resolveActivity(getPackageManager()) != null) {
                   startActivity(intent);
              } else {
                   Toast. makeText(this, R.string.app_not_available ,
                             Toast. LENGTH_LONG).show();
              }
               return true ;
          }
           return super .onOptionsItemSelected(item);
     }

     /* The click listner for ListView in the navigation drawer */
     private class DrawerItemClickListener implements
              ListView.OnItemClickListener {
           @Override
           public void onItemClick(AdapterView<?> parent, View view, int position,
                    long id) {
              selectItem(position);
               mTag = position;
          }
     }

     private void selectItem(int position) {
           // update the main content by replacing fragments
          Fragment fragment = new PlanetFragment();
          Bundle args = new Bundle();
          args.putInt(PlanetFragment. ARG_PLANET_NUMBER, position);
          fragment.setArguments(args);

          FragmentManager fragmentManager = this.getSupportFragmentManager();
          fragmentManager.beginTransaction()
                   .replace(R.id. content_frame, fragment).commit();

           // update selected item and title, then close the drawer
           mDrawerList.setItemChecked(position, true);
          setTitle( mPlanetTitles[position]);
           mDrawerLayout.closeDrawer(mDrawerList );
     }

     private void changeDrawerState() {
           boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList );
           if (drawerOpen) {
               /*close the drawer*/
               mDrawerLayout.closeDrawer(mDrawerList );
          } else {
               /*open the drawer*/
               mDrawerLayout.openDrawer(mDrawerList );
          }
     }

     @Override
     public void setTitle(CharSequence title) {
           mTitle = title;
          getSupportActionBar().setTitle( mTitle);
     }

     /**
      * Fragment that appears in the "content_frame", shows a planet
      */
     public static class PlanetFragment extends Fragment {
           public static final String ARG_PLANET_NUMBER = "planet_number";

           public PlanetFragment() {
               // Empty constructor required for fragment subclasses
          }

           @Override
           public View onCreateView(LayoutInflater inflater, ViewGroup container,
                   Bundle savedInstanceState) {
              View rootView = inflater.inflate(R.layout.fragment_planet ,
                        container, false);
               int i = getArguments().getInt(ARG_PLANET_NUMBER );
              String planet = getResources()
                        .getStringArray(R.array. planets_array)[i];

              ((TextView) rootView.findViewById(R.id.image )).setText(planet);
              getActivity().setTitle(planet);
               return rootView;
          }
     }

     @Override
     public boolean onKeyUp( int keyCode, KeyEvent event) {
           if (keyCode == KeyEvent.KEYCODE_MENU) {
              changeDrawerState();
          }
           return super .onKeyUp(keyCode, event);
     }

}