Androidstudio有关侧滑的实现代码

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package com.example.cholewu.slide;

import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.design.widget.NavigationView;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

    //左滑菜单
    initView();
  }
  private void initView() {

    //实现左右滑动
    final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    //菜单控件
    final NavigationView nv = findViewById(R.id.nav_view);
    nv.setItemIconTintList(null);
    
    nv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
      @Override
      public boolean onNavigationItemSelected(@NonNull MenuItem item) {

        switch (item.getItemId()){
          case R.id.exit:
            //跳转到退出页面
            Toast.makeText(MainActivity.this,"你已退出登录！",Toast.LENGTH_SHORT).show();
            Intent intent=new Intent();
            intent.setClass(MainActivity.this,Exit.class);
            startActivity(intent);
            item.setChecked(true);
            break;
        }

        item.setCheckable(true);//设置可选项
        item.setChecked(true);//设置被选中
        drawer.closeDrawers();//关闭菜单栏
        return true;
      }

    });
  }
}