How to display output from Qt Android service process in QtCreator?

JonB

@morte
QtService seems to be a wrapper for Linux demons or Windows services. By definition you won't be able to access any output it produces, since it's in a quite separate process and any output it produces will go elsewhere (probably nowhere). It would be more usual for any output a service wants to produce to go to a file/the system's "event log", but that is done within the service.

morte

@JonB I have not specified, QtService for Android (part of QtAndroidExtras), its different process, but maybe its possible somehow to attach it's output

morte

It's not implemented currently on Qt Creator 4.12/4.13.
Created bugreport with suggestion to add that feature https://bugreports.qt.io/browse/QTCREATORBUG-24496

JonB

@morte
Good luck for them choosing or being able to do anything about it. Since, as you say, the service is running in a separate process I don't think you'll get the debug output from that process while you are debugging your main process....

morte

@JonB QtCreator probably takes all output from logcat, what needed is to modify logcat filters that QtCreator output windows uses or add additional output window with own filters for separate process

CPPUIX

So I have to manually search for keywords to get the desired output highlighted in the console, when using adb logcat.

Some people suggest filtering the output using the app package name, but not all output contains it.

If anyone has a workaround that detects all of the package's output, that'd be great.

Thanks

piervalli

On Windows I use
adb logcat | findstr appname

Replace the name with tag.
On the version 5.15.2 there was a bug that not write on console on android, but there is a easy workaround. (Now I am out of my office)
adb is very powerful you can use shell for example LS or copy in PC logs files

CPPUIX

@piervalli But that's text-based filtering, which doesn't fully work because not all output contains the app tag, as I mentioned.

piervalli

I use a custom qInstallMessageHandler

Have you tested with method?
__android_log_print(priority, "Qt", "%s", qPrintable(fMessage));

CPPUIX

@piervalli Oh, that's new, I'll try it out.

Thanks!