B4J Question Wait for needs the event sub to exist?

[Cableguy]

I have a "Wait For Pane1_AnimationCompleted" in a sub, and it works as expected, except that if the event sub is not present, in this case, "Pane1_AnimationCompleted", the app crashes, with the following logs:

Waiting for debugger to connect...
Program started.
An error occurred:
(Line: 56) End Sub
java.lang.Exception: Sub pane1_animationcompleted signature does not match expected signature.
public static void b4j.example.launcher_subs_0._pane1_animationcompleted() throws java.lang.Exception
class anywheresoftware.b4a.pc.RemoteObject,

 

[EnriqueGonzalez]

i suppose you are calling back the sub with callsubdeleyed()

may be you could use also if subexists() function.

 

[Cableguy]

No, I'm not, just what I wrote...

I call the animation:

 Pane1.SetAlphaAnimated(50,1)
 Wait For Pane1_AnimationCompleted
Pane1.SetLayoutAnimated(100,Pane1.Left,Pane1.Top,285,60)

This waits for the pane to became fully visible, and them enlarges it.

but without the Pane1_AnimationCompleted sub, it crashes after completing the code

 

[EnriqueGonzalez]

It doesnt break anything here if i do not put that line.

And i think that if it were an external lib, it would be that the creator forgot to put the callsubdelayed call, but it is actually the core library.

i am using JCore 5.80

 

[Cableguy]

It doesnt break anything here if i do not put that line. "

Which one?

i am using JCore 5.80

same here

 

[EnriqueGonzalez]

with both, separeted and at the same time, they behave as expected. In diferent scenarios with wait for in the middle, at the end, one wait for for each call.

No problem at all.

i am using jdk 8u144

 

[Erel]

The sub doesn't need to exist. Can you upload this project?

 

[Cableguy]

I will, near lunch time, hopefully

 

[Cableguy]

Hi again, Here goes a simplified test that errors out as described.

my Java version is:
java version "1.8.0_141"

 

[Erel]

What are the steps to reproduce it? I've ran it and didn't see anything.

Note that you don't need that timer. Just call Sleep:

Sub AppStart (Form1 As Form, Args() As String)
   MainForm = Form1
   MainForm.SetFormStyle("UTILITY")
   MainForm.WindowTop = -1000
   MainForm.Show
   Sleep(200)
   MyLauncher.Initialize(MainForm)
End Sub

 

[Cableguy]

I forgot about the timer, it's there for another reason... Bring your mouse to the upper left corner of the screen, there's a 1x10px label there that will trigger the animation

 

[Erel]

Good example! There is indeed a bug here. It is fixed for the next update.

It happens in debug mode, in classes where there are multiple Wait Fors with the same name.

 

[Cableguy]

So I'm Not crazy!? (after the sleep thread I started doubting myself)

You said in debug mode, so in release it should run ok?

 

[Erel]

You said in debug mode, so in release it should run ok?

Yes.

 

[GuyBooth]

Thank you! See this thread - https://www.b4x.com/android/forum/posts/525585/
I was never able to come up with a project that I could send Erel to reproduce this error, and I ended up rebuilding my code from the ground up to eliminate the problem - and for other reasons.