Android Question callsub between classes bugs only in release mode

[sorex]

Hello,

I have a weird issue here.

I have a main module and 2 different classes.

When I want to do call subs in a way like

class 1 > class 2 > class 1 based on mainmodule class 1 reference

then it's working perfect in debug mode.

when using release it always returns a null pointer exeption.

I isolated the problem and attached it as a project.

If anyone can have a look at this problem and enlighten me about the cause then please do so.

 

[sorex]

bizarre, now it's not working in debug mode either anymore

Edit: now it worked again and the output should be

** Activity (main) Create, isFirst = true **
call testsub
test sub reached
end sub reached
** Activity (main) Resume **

not

** Activity (main) Pause, UserClosed = true **
** Activity (main) Create, isFirst = true **
call testsub
test sub reached
class2_testsub (java line: 48)
java.lang.NullPointerException
    at b4a.example.class2._testsub(class2.java:48)
    at b4a.example.class1._start(class1.java:57)
    at b4a.example.main._activity_create(main.java:321)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:187)
    at b4a.example.main.afterFirstLayout(main.java:100)
    at b4a.example.main.access$100(main.java:17)
    at b4a.example.main$WaitForLayout.run(main.java:78)
    at android.os.Handler.handleCallback(Handler.java:587)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:130)
    at android.app.ActivityThread.main(ActivityThread.java:3683)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
    at dalvik.system.NativeStart.main(Native Method)
java.lang.NullPointerException

 

[Erel]

Your code shouldn't compile as Global variables are always private. Due to a bug in v5.02 your code will compile (this bug is fixed for the next update).

Try to move it to process_globals and see whether you still encounter this issue.

 

[sorex]

Thanks Erel, that solved it in the isolated example.

In the real project it then give...

Error description: Cannot access activity object from sub Process_Globals.

 

[sorex]

and that error occurs on the line where the object is define

Sub Process_Globals
Dim c1 As class_name
End Sub

 

[Erel]

Error description: Cannot access activity object from sub Process_Globals.

Your class holds a reference to the activity context. This means that you cannot make it a process globals variable. Which also means that it will be a private variable.

 

[sorex]

I see, so I guess I need to use my old workaround then which is an extra sub in the main module that callsubs the right sub in the class?

 

[Erel]

Yes. You need to call the parent activity which will then call the class instance.

 

[sorex]

ok, it works now with the old method.

I hoped there would've been a direct way without the need to have a bunch of sub call subs in the main activity.