Android-筆記 Navigation Drawer

public class MainActivity extends Activity {

     private DrawerLayout mDrawerLayout;
     private RelativeLayout mDrawerList;

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

     private void initDrawer() {
          mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
          mDrawerList = (RelativeLayout) findViewById(R.id.left_drawer);
          findViewById(R.id.ImageIcon).setOnClickListener(
                    new OnClickListener() {

                         @Override
                         public void onClick(View v) {
                              if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
                                   mDrawerLayout.closeDrawer(mDrawerList);
                              } else {
                                   mDrawerLayout.openDrawer(mDrawerList);
                              }
                         }
                    });
     }
}