White Screen after Press go Back Button Android

Please guys!

Doubt about problem of closing application after clicking back.

I set up all blocks to close the app after clicking Back and configured with alert message.

But the alert message does not appear on the screen and when clicking Back, the app has a white screen.

Does not close the app.

Please help!

Welcome. Please don’t double post. That is not allowed.

Can someone help me?


Try a search in the community for webviewer back white