Android中DrawerLayout实现侧滑菜单效果

public class MainActivity extends BaseActivity implements NavigationView.OnNavigationItemSelectedListener {

 private LinearLayout right;
 private NavigationView left;
 private boolean isDrawer=false;
 private DrawerLayout drawer;



 @Override
 public int getLayoutId() {
 return R.layout.activity_main;
 }

 @Override
 public void initPresenter() {

 }

 @Override
 public void initView() {
 drawer = (DrawerLayout) findViewById(R.id.drawer_layout);


 right = (LinearLayout) findViewById(R.id.right);
 left = (NavigationView) findViewById(R.id.nav_view);

 NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
 navigationView.setNavigationItemSelectedListener(this);

 right.setOnTouchListener(new View.OnTouchListener() {
  @Override
  public boolean onTouch(View view, MotionEvent motionEvent) {
  if(isDrawer){
   return left.dispatchTouchEvent(motionEvent);
  }else{
   return false;
  }
  }
 });
 drawer.setDrawerListener(new DrawerLayout.DrawerListener() {
  @Override
  public void onDrawerSlide(View drawerView, float slideOffset) {
  isDrawer=true;
  //获取屏幕的宽高
  WindowManager manager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
  Display display = manager.getDefaultDisplay();
  //设置右面的布局位置 根据左面菜单的right作为右面布局的left 左面的right+屏幕的宽度（或者right的宽度这里是相等的）为右面布局的right
  right.layout(left.getRight(), 0, left.getRight() + display.getWidth(), display.getHeight());
  }
  @Override
  public void onDrawerOpened(View drawerView) {}
  @Override
  public void onDrawerClosed(View drawerView) {
  isDrawer=false;
  }
  @Override
  public void onDrawerStateChanged(int newState) {}
 });


 }



 @Override
 public void onBackPressed() {
 if (drawer.isDrawerOpen(GravityCompat.START)) {
  drawer.closeDrawer(GravityCompat.START);
 } else {
  super.onBackPressed();
 }
 }




 @SuppressWarnings("StatementWithEmptyBody")
 @Override
 public boolean onNavigationItemSelected(MenuItem item) {
 // Handle navigation view item clicks here.
 int id = item.getItemId();

 if (id == R.id.nav_camera) {
  // Handle the camera action
 } else if (id == R.id.nav_gallery) {

 } else if (id == R.id.nav_slideshow) {

 } else if (id == R.id.nav_manage) {

 } else if (id == R.id.nav_share) {

 } else if (id == R.id.nav_send) {

 }

 DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 drawer.closeDrawer(GravityCompat.START);
 return true;
 }