Android Question Problem with render layout

[Matteo Giorgini]

Hi guys!
I had develop an APK with B4A 6.80. Now, I must implement a new feature and I opening project with B4A v. 9.50.
For some activities I built a specified layout that now not rendered and I don't understand why.
I try to deploy APK on Samsung Galaxy J6 device (Android 9 Pie) and, for example, buttons aren't rendered.
I use jdk-11.0.1, android-28 platform.
I searched some similar problems, but I don't found and I don't solved.

An example:
Activity.LoadLayout("MenuConfigMain")
ScrollViewArea.Panel.LoadLayout("MenuConfig")


Can you help me?

Thanks in advance.

Matteo

 

[Erel]

Please create a small project that demonstrates the problem and upload it.

 

[Matteo Giorgini]

Thanks Erel! If I try to use layout in a new project, works.
I don't understand what're differences...

 

[Matteo Giorgini]

Hi,
I tried to change device; I found an old device with Android 5.1, where runs previous versione of apk.
On that device I don't have any problems.
I just continue to don't understand...
The last chance is to unmount the APK for catch istruction with problem.

From Android 5.1 to 9.0 management of services was changed?

Do you have other ideas?

Thanks in advance,
Matteo

 

[klaus]

Are you sure that the problem is not Android?
The look of the layouts changes with almost every new release of Android.
Light themes, dark themes, light themes etc.

 

[DonManfred]

From Android 5.1 to 9.0 management of services was changed?

A lot has changed.

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

www.b4x.com

 

[Matteo Giorgini]

Are you sure that the problem is not Android?
The look of the layouts changes with almost every new release of Android.
Light themes, dark themes, light themes etc.

Thanks for suggest, but same layout in a new project on same device, in debug or release mode, works perfectly.

Matteo

 

[Matteo Giorgini]

A lot has changed.

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

www.b4x.com

Thanks for suggest and link!

I see right there...
On Activity_Create of Main activity I started five services and then create components inline.
After, start another activity with load layout. In same cases components don't rendered.

Matteo