I can't remove that line. After I remove it, it fail to run with the following error message:
B4A Version: 9.50
Java Version: 8
Parsing code. (0.15s)
Building folders structure. (0.12s)
Compiling code. (0.49s)
Compiling layouts code. (0.09s)
Organizing libraries. (0.00s)
(AndroidX SDK)
Generating R file. Error
c:\users\winnie chan\appdata\local\android\sdk\tools\..\extras\b4a_remote\androidx\core\core\1.0.2\unpacked-core-1.0.2\res\values-v21\values-v21.xml:7: error: Error retrieving parent for item: No resource found that matches the given name '@android:style/TextAppearance.Material.Notification'.
c:\users\winnie chan\appdata\local\android\sdk\tools\..\extras\b4a_remote\androidx\core\core\1.0.2\unpacked-core-1.0.2\res\values-v21\values-v21.xml:8: error: Error retrieving parent for item: No resource found that matches the given name '@android:style/TextAppearance.Material.Notification.Info'.
c:\users\winnie chan\appdata\local\android\sdk\tools\..\extras\b4a_remote\androidx\core\core\1.0.2\unpacked-core-1.0.2\res\values-v21\values-v21.xml:9: error: Error retrieving parent for item: No resource found that matches the given name '@android:style/TextAppearance.Material.Notification.Time'.
c:\users\winnie chan\appdata\local\android\sdk\tools\..\extras\b4a_remote\androidx\core\core\1.0.2\unpacked-core-1.0.2\res\values-v21\values-v21.xml:10: error: Error retrieving parent for item: No resource found that matches the given name '@android:style/TextAppearance.Material.Notification.Title'.
Besides, where can I find the manifest.xml file?
Thank you
DonManfred.