側拉布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/Drawer_Layout"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        //利用Toolbar時注意這裡的陷阱  要關閉模擬器自帶的導航欄
       <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:title="我是toolbar"
            app:titleTextColor="#f00" />
       <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="我是內容頁" />
    </LinearLayout>
    <!--  android:layout_gravity="top和bottom不能用  只能左右" ☆☆-->
    <!--記得導依賴com.android.support:design (com.android.support:design:28.0.0)-->
    <android.support.design.widget.NavigationView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:id="@+id/Navi_View"
        android:layout_gravity="start"
        app:headerLayout="@layout/activity_header"
        app:menu="@menu/mian"
        ></android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
 

Toolbar 陷阱解決
方式一

方式二
直接在androidmanifest中的application或者activity加入
頭部佈局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/Head_Image"
    android:src="@mipmap/ic_launcher_round"
    android:layout_centerInParent="true"/>
</RelativeLayout>
 

menu佈局

在這<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <!--orderInCategory這個是設定顯示優先順序的-->
    <item android:id="@+id/item_One"
    android:title="設定"/>
    <item android:id="@+id/item_Two"
        android:title="分享"/>
    <item android:id="@+id/item_Three"
        android:icon="@android:drawable/ic_menu_add"
        android:title="新增"/>
    <group android:id="@+id/group1" >
        <item
            android:id="@+id/item_Four"
            android:title="睡覺覺"/>
        <item
            android:id="@+id/item_Five"
            android:title="打LOL"/>
    </group>
</menu>裡插入程式碼片
 

大致效果如下

import android.os.Bundle;
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.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
   private NavigationView Navi_View;
    private ImageView mImage;
    //很多api
    private DrawerLayout mDrawerLayout;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_drawtwo);
        initView();
    }
    private void initView() {
        mDrawerLayout = findViewById(R.id.Drawer_Layout);
        Navi_View = (NavigationView) findViewById(R.id.Navi_View);
        //從NavigationView裡面獲取頭佈局
        View view = Navi_View.getHeaderView(0);
        mImage = view.findViewById(R.id.Head_Image);
        //頭部點選事件
        mImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "睡覺覺", Toast.LENGTH_SHORT).show();
            }
        });
        //這個是選單的點選事件
        Navi_View.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
                switch (menuItem.getItemId()) {
                    case R.id.item_One:
                        Toast.makeText(MainActivity.this, "itemOne", Toast.LENGTH_SHORT).show();
                        mDrawerLayout.closeDrawers();
                        break;
                    case R.id.item_Two:
                        Toast.makeText(MainActivity.this, "itemTwo", Toast.LENGTH_SHORT).show();
                        mDrawerLayout.closeDrawers();
                        break;
                    case R.id.item_Three:
                        Toast.makeText(MainActivity.this, "itemThree", Toast.LENGTH_SHORT).show();
                        mDrawerLayout.closeDrawers();
                        break;

                }
                return false;
            }
        });
    }
}