This is because the demos were created prior to Android 12, and LAMW I defaults to targeting a higher API than Android 12, you could also reduce the 'Target SDK Version' to 30 (Android 11) for testing....or amend your demo, like below:
The
Androidmanifest.xml file in the root of that demo needs adjusted slightly to include the
android:exported option in the activity element like:
<activity android:name="com.example.appclockdemo1.App" android:label="@string/app_name" android:configChanges="orientation|keyboardHidden|screenSize|screenLayout|fontScale" android:exported="true">
Notice
android:exported="true" has been added to the end of this line,
It should compile/run after that change, you may find other demos are the same.