如何在Android的导航抽屉中放置元素

<androidx.drawerlayout.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- 主内容布局 -->
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <!-- 导航抽屉布局 -->
    <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:menu="@menu/drawer_menu" />

</androidx.drawerlayout.widget.DrawerLayout>

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu_item1"
        android:icon="@drawable/ic_menu_item1"
        android:title="菜单项1" />
    <item
        android:id="@+id/menu_item2"
        android:icon="@drawable/ic_menu_item2"
        android:title="菜单项2" />
</menu>

public class MainActivity extends AppCompatActivity {

    private DrawerLayout drawerLayout;
    private NavigationView navigationView;

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

        drawerLayout = findViewById(R.id.drawer_layout);
        navigationView = findViewById(R.id.nav_view);

        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                // 处理菜单项点击事件
                switch (item.getItemId()) {
                    case R.id.menu_item1:
                        // 处理菜单项1的点击事件
                        break;
                    case R.id.menu_item2:
                        // 处理菜单项2的点击事件
                        break;
                }

                // 关闭导航抽屉
                drawerLayout.closeDrawer(GravityCompat.START);
                return true;
            }
        });
    }
}