Android使用DrawerLayout实现双向侧滑菜单

public class MainActivity extends Activity implements OnClickListener{

 private DrawerLayout mDrawerLayout;
 private View v_menu_left,v_menu_right;
 private Button btn_left,btn_right;

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

 private void initListener() {
 btn_left.setOnClickListener(this);
 btn_right.setOnClickListener(this);
 }

 private void initView() {
 mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerlayout);
 v_menu_left = findViewById(R.id.layout_menu_left);
 v_menu_right = findViewById(R.id.layout_menu_right);
 btn_left = (Button) findViewById(R.id.btn_toggle_left);
 btn_right = (Button) findViewById(R.id.btn_toggle_right);
 }

 @Override
 public void onClick(View v) {
 if(v.getId()==R.id.btn_toggle_left){
 toggleLeft();
 }else if(v.getId()==R.id.btn_toggle_right){
 toggleRight();
 }
 }

 private void toggleRight() {
 if(mDrawerLayout.isDrawerOpen(v_menu_right)){
 mDrawerLayout.closeDrawer(v_menu_right);
 }else{
 mDrawerLayout.openDrawer(v_menu_right);
 }

 }

 private void toggleLeft() {
 if(mDrawerLayout.isDrawerOpen(v_menu_left)){
 mDrawerLayout.closeDrawer(v_menu_left);
 }else{
 mDrawerLayout.openDrawer(v_menu_left);
 }
 }

}