I've run your app, but your app can't change icon image.
Hope the following project can help you understand better.
You can unzip the b4xlib to see.
If you want to check the original source project how I developed the b4xlib, you can check on my GitHub link inside this post.
Version: 1.10 Supported Platforms: B4A, B4J GitHub: https://github.com/pyhoon/qrcode-with-logo-b4a I think this is my first time creating XUI custom view library. Here is the first version based on QRGenerator. As usual, welcome everyone to contribute to this open source project. Private Sub...
See, not much lines of code. It is not that difficult to change the icon.
Just prepare some transparent PNG files, example with size 200x200 and the logo is centered with size 40x40 to 60x60 pixels.