B4J Question Timer works in class module, but not when compiled to lib

[Dan Haugland]

I have a class module that initializes a timer in the _initialize, and when another method is called enables the timer. I have logging in the _Tick callback, and the method that enables it. When compiling the class into the app, everything works fine, but if I compile the class to a lib and then tell my app to use that...the timer never fire. Why might that be?

 

[Erel]

Can you upload the project (with the class source code)?

 

[Dan Haugland]

2 files. bcn is the stripped down class, bcl is the stripped ui that uses it. If compiled to a lib, the timer in the class never ticks. If you include the module in bcl directly, it does.

 

[Erel]

bcn project should be a ui project.

You cannot use a library created from a non-ui project in a ui project.

 

[Dan Haugland]

That's easy to fix, thank you. Actually, is the opposite true as well? If I build it in a UI can I use it in a non-ui app?

 

[Erel]

If I build it in a UI can I use it in a non-ui app?

No.

If you need to use the libraries from both a UI and non-Ui applications then you can put the library modules in the shared modules folder and create two projects (UI and non-UI) that use these modules. Now you can create a library for each version.

This is how OkHttpUtils2 is compiled.

 

[Dan Haugland]

Noted, thanks.

 

[Dan Haugland]

But a clarifying question, why do libs like jserver, json, etc work in ui or non-ui aaps?

 

[Erel]

I don't recommend using jServer in a UI application. It is designed to work in non-ui applications.

There are differences between libraries written in Java and libraries written in B4J. When you write the library with B4J the classes expect a "context" of a specific type.

 

[Dan Haugland]

Noted, thanks.