Webview In Navigation View (Drawer) [ Android ]

navigationview_header.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
  
  <WebView
      android:id="@+id/webview"
      android:layout_width="match_parent"
      android:layout_height="match_parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

SomeActivity.java

public class SomeActivity {
  @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.webview_in_drawer_layout);
      // ...
      
      DrawerLayout drawerLayout = findViewById(R.id.drawer_layout);
      ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
              this, drawerLayout, null, R.string.app_name, R.string.app_name);
      drawerLayout.addDrawerListener(toggle);
      toggle.syncState();

      // To make webview full screen
      View view = findViewById(R.id.some_full_screen_view);
      ViewTreeObserver viewTreeObserver = view.getViewTreeObserver();
      if (viewTreeObserver.isAlive()) {
          viewTreeObserver.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
              @Override
              public void onGlobalLayout() {
                  view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                  ConstraintLayout.LayoutParams params = (ConstraintLayout.LayoutParams) navigationView.getHeaderView(0).findViewById(R.id.webview).getLayoutParams();
                  params.height = view.getHeight()-50;
                  navigationView.getHeaderView(0).findViewById(R.id.webview).setLayoutParams(params);
              }
          });
      }
    }
}

webview_in_drawer_layout.xml

<?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:layout_width="match_parent"
    android:id="@+id/drawer_layout"
    android:layout_height="match_parent">
  
    <androidx.coordinatorlayout.widget.CoordinatorLayout android:layout_width="match_parent"
        android:layout_height="match_parent">
      
        <!-- Your content -->
      
    </androidx.coordinatorlayout.widget.CoordinatorLayout>

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigation"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        android:backgroundTint="#fff"
        android:layout_gravity="start|left"
        android:nestedScrollingEnabled="true"
        app:headerLayout="@layout/navigationview_header"/>
  
</androidx.drawerlayout.widget.DrawerLayout>