After a lot of testing and following the advices from the other answers, I've finally fixed the issue.
Issues with WebView
:
WebView
have to be loaded dynamically in the activity. Loading from XML file via Activity#setContentView()
won't work for the first time and localisation of the entire activity will break. However, subsequent launches or Activity#recreate()
will work as expected.
- Even if
WebView
is loaded dynamically, it won't work for the first time. Again, subsequent launches or Activity#recreate()
will work properly.
Considering the issues above, the solution involves loading WebView
dynamically and then, the immediate recreation of the activity.
ActivityWithWebView.java
public class ActivityWithWebView extends AppCompatActivity {
private WebView webView;
private static boolean firstTime = true;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
setContentView(R.layout.activity_with_web_view);
setSupportActionBar(findViewById(R.id.toolbar));
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) actionBar.setTitle(R.string.instructions);
// WebView has to be loaded dynamically to prevent in-app localisation issue.
webView = new WebView(this);
if (firstTime) {
// Recreate if loaded for the first time to prevent localisation issue.
recreate();
firstTime = false;
return;
}
LinearLayoutCompat webviewWrapper = findViewById(R.id.webview_wrapper);
webView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
webviewWrapper.addView(webView);
// Do other works.
}
}
activity_with_web_view.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
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">
<com.google.android.material.appbar.AppBarLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?android:colorBackground" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.appcompat.widget.LinearLayoutCompat
android:id="@+id/webview_wrapper"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>