使用DrawerLayout实现滑动菜单的方法

<activity android:name=".DrawerLayoutActivity"
      android:theme="@style/NoTitle"></activity>

<style name="NoTitle" parent="Theme.AppCompat.Light.NoActionBar">//隐藏原有导航栏
    //以下两条均为颜色的设置
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
  </style>

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
  <androidx.appcompat.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="&#63;attr/actionBarSize"
    android:background="&#63;attr/colorPrimary"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
  <ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/b" />
</LinearLayout>

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="&#63;attr/colorPrimary"
  android:padding="40dp">
  <de.hdodenhof.circleimageview.CircleImageView//将图片圆形化的控件（Design Support库中提供）
    android:layout_width="80dp"
    android:layout_height="80dp"
    android:src="@drawable/cat"
    android:scaleType="centerCrop"
    android:layout_gravity="center"/>
  <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="20dp"
    android:text="你的小可爱"
    android:textSize="20sp"
    android:layout_gravity="center"/>
</LinearLayout>

dependencies {
  implementation fileTree(include: ['*.jar'], dir: 'libs')
  implementation 'androidx.appcompat:appcompat:1.2.0'
  implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
  implementation 'de.hdodenhof:circleimageview:2.1.0'//这是需要添加的
  testImplementation 'junit:junit:4.12'
  androidTestImplementation 'androidx.test.ext:junit:1.1.1'
  androidTestImplementation 'androidx.test.espresso:espressocore:3.2.0'
}

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  tools:showIn="navigation_view">
  <group android:checkableBehavior="single">
    <item
      android:id="@+id/nav_home"
      android:icon="@drawable/ic_menu_camera"
      android:title="Home" />
    <item
      android:id="@+id/nav_gallery"
      android:icon="@drawable/ic_menu_gallery"
      android:title="Gallery" />
    <item
      android:id="@+id/nav_slideshow"
      android:icon="@drawable/ic_menu_slideshow"
      android:title="Slideshow" />
    <item
      android:id="@+id/nav_tools"
      android:icon="@drawable/ic_menu_manage"
      android:title="Tools" />
  </group>
</menu>

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  xmlns:tools="http://schemas.android.com/tools"
  android:id="@+id/drawer_layout"
  android:fitsSystemWindows="true"
  tools:openDrawer="start">
  <include
    layout="@layout/important"//引入上面编好的important.xml文件
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
  <com.google.android.material.navigation.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/left"//引入上面编好的left.xml文件
    app:menu="@menu/nav_menu">//引入上面编好的nav_menu.xml文件
  </com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>

dependencies {
  implementation fileTree(include: ['*.jar'], dir: 'libs')
  implementation 'androidx.appcompat:appcompat:1.2.0'
  implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
  implementation 'androidx.navigation:navigation-fragment:2.3.0'//这里是需要添加的
  implementation 'androidx.navigation:navigation-ui:2.3.0'//这里是需要添加的
  implementation 'de.hdodenhof:circleimageview:2.1.0'
  testImplementation 'junit:junit:4.12'
  androidTestImplementation 'androidx.test.ext:junit:1.1.1'
  androidTestImplementation 'androidx.test.espresso:espressocore:3.2.0'

import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;

import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import com.google.android.material.navigation.NavigationView;

public class DrawerLayoutActivity extends AppCompatActivity {
  private DrawerLayout mDrawerlayout;
  private ActionBar actionBar;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_drawer_layout);
    mDrawerlayout=findViewById(R.id.drawer_layout);//得到DrawerLayout实例
    NavigationView navigationView=findViewById(R.id.nav_view);//获取到NavigationView实例
    Toolbar toolbar = findViewById(R.id.toolbar);//找到Toobar控件
    setSupportActionBar(toolbar);//用setSupportActionBar方法将导航栏设置为我们自定义的Toolbar   
    actionBar=getSupportActionBar();//用getSupportActionBar()方法实例化导航栏（这里的导航栏就是我们自定义的Toolbar）
    if(actionBar!=null){
      actionBar.setDisplayHomeAsUpEnabled(true);//让左上角的导航按钮显示出来
      actionBar.setHomeAsUpIndicator(R.drawable.caidan);//设置导航按钮图标（图片是提前准备好的）
    }
    navigationView.setCheckedItem(R.id.nav_home);//调用NavigationView的setCheckedItem方法将Home菜单设置为默认选中
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {//设置菜单选中事件的监听器
      @Override
      public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
        mDrawerlayout.closeDrawers();//选中后关闭菜单
        return true;
      }
    });
  }
   @Override
  public boolean onOptionsItemSelected(@NonNull MenuItem item) {//加入的导航按钮的点击事件
    switch (item.getItemId()){
      case android.R.id.home:
        mDrawerlayout.openDrawer(GravityCompat.START);//调用DrawerLayout的openDrawer方法将菜单展示出来
        actionBar=null;
        break;
      default:
    }
    return true;
  }
 }