Android Question Updating to SDK 26 makes controls invisible

How could we help? You are not providing any usefull information.
You are using Appcompat and setup a correct theme?

I am not familiar with Appcompat, and I am not using it, and I will try explain in more detail my issue. I have been using B4A for several years now and with all SDK iterations my controls have always displayed clearly. Below is a screenshot of a screen running version 23



After updating the sdk version 26, the same screen now appears as below:



What will I need to change in the manifest editor, or whichever other method, in order to get things to look the way they did before the upgrade?

Search for AppCompat, create a Material Theme and use it. Looks like you are using an very old Android 2 Theme.

https://www.b4x.com/android/forum/threads/appcompat-with-toolbar-minimal-example.79896/
https://www.b4x.com/android/forum/t...le-with-older-android-versions.48423/#content
https://www.b4x.com/android/forum/t...-2-using-the-appcompat-library.48424/#content
https://www.b4x.com/android/forum/t...3-using-a-toolbar-as-actionbar.49053/#content
https://www.b4x.com/android/forum/t...4-modifyable-and-advanced-menu.49128/#content

Ok thanks. Let me have a look into this and see if I can find a solution

For anyone that has encountered the same issue as described above, the best solution for me was found at this link: https://www.b4x.com/android/forum/threads/version-safe-themes.87694/