[移动开发]NavigationView 实现侧滑菜单

主布局

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/dl_main_drawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:textSize="30sp"
        android:text="内容区域"
        android:gravity="center"
        android:background="@color/teal_200"
        />

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigation"
        android:layout_width="wrap_content"
        android:layout_gravity="start"
        android:layout_height="match_parent"
        app:headerLayout="@layout/view_fold"
        app:menu="@menu/drawer_view"/>
</androidx.drawerlayout.widget.DrawerLayout>

header 布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="match_parent"
        android:scaleType="fitXY"
        android:src="@mipmap/pic"
        android:layout_height="wrap_content"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="折叠式 Notification 是一种自定义视图的 Notification"
        />
</LinearLayout>

侧滑菜单

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_home"
            android:icon="@mipmap/ic_launcher"
            android:title="首页"
            />
        <item
            android:id="@+id/nav_messages"
            android:icon="@mipmap/ic_launcher"
            android:title="事项"
            />
        <item
            android:id="@+id/nav_music"
            android:icon="@mipmap/ic_launcher"
            android:title="音乐"
            />
        <item
            android:id="@+id/nav_discussion"
            android:icon="@mipmap/ic_launcher"
            android:title="消息"
            />
        <item android:title="其他">
            <menu>
                <item
                    android:icon="@mipmap/ic_launcher"
                    android:title="设置"
                    />
                <item
                    android:icon="@mipmap/ic_launcher"
                    android:title="关于我们"
                    />
            </menu>
        </item>
    </group>
</menu>

核心代码

public class NavigationViewActivity extends AppCompatActivity {

    private DrawerLayout drawerLayout;
    private NavigationView navigationView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_navigation);


        drawerLayout = findViewById(R.id.dl_main_drawer);
        navigationView = findViewById(R.id.navigation);

        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                item.setChecked(true);
                String menuTitle = item.getTitle().toString();
                Toast.makeText(NavigationViewActivity.this,menuTitle,
                        Toast.LENGTH_SHORT).show();
                drawerLayout.closeDrawers();
                return true;
            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()){
            case R.id.nav_home:
                drawerLayout.openDrawer(GravityCompat.START);
                return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

实现效果

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