Android Question Solved - App mysteriously stopped working

tsteward

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So I come home today and load up B4A on my PC. Load my app, change 1 line of code and hit compile.
B4A complains androidx.annotations:annotations-experimental (Google Maven) is missing. So I install it.
Now I recompile in debug mode. It compiles, it installs and blinks on my phone screen and disappears.
IDE shows no lines of anything in the log.

Not sure what to do.
I have tried loading backup from 3 days ago and same thing
 

tsteward

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I have turned usb debugging mode on but don't know how to connect b4a to the device
Doesn't seem to show in notifications.

Firebaseadmob = no I don't use it
 

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josejad

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I have turned usb debugging mode on but don't know how to connect b4a to the device
No need to do nothing special. Just clean the project and compile again. The IDE should detect it

of course with the phone plugged
 
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MikeSW17

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A couple of questions, a) Have you used the SDK Manager to install.update anything? b) Has the device had any recent Android updates?
 
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tsteward

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So no updates to Windows but yes I did let SDK do updates a few days ago but have successfully compiled since then.
Phone updates not that I am aware of. And have not installed any new apps.
I have tried on two different device and same problem.

I can compile install and run other projects and view log files whilst they are running etc
My main app is compiling, is installing but flashes on the screen and disappears

All that to me indicates an issue with this app or one of its libraries. Since going to known working backups doesn't fix it then next this is library file become corrupt maybe??
Getting no feedback from the ide is not helping.
 
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agraham

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My main app is compiling, is installing but flashes on the screen and disappears
Make sure it is compiled in release mode then install it. Keep running it and with a bit of luck Android will complain that it keeps stopping and give you the option to send a report. That in turn should let you preview the report which should contain a stack trace that will give you a clue.
 
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tsteward

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Make sure it is compiled in release mode then install it. Keep running it and with a bit of luck Android will complain that it keeps stopping and give you the option to send a report. That in turn should let you preview the report which should contain a stack trace that will give you a clue.
No luck there i'm afraid
You can see it open (White screen) then it just dissapears
 
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josejad

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Try to set some breakpoint at the begining of the app, to see if the app reach that point.
 
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tsteward

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Ok re-downloaded & added what was need to my additional library folder (probs was good to have a clean up)

But no good. This app has grown from nothing over 8 or so years and I never had this type of issue before.
Probably something really simple but at this time its useless.

I can't compile a useable app
 
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josejad

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Can you send us the compiled apk to test if in our phones it has the same behaviour?
 
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