How to prevent multiple instances of Qt Quick based app on Harmattan ?

[rocjohn]

My application is a Qt Quick based app, and failed in QA of Store.
SUMMARY: The application opens multiple instances.
STEPS TO REPRODUCE:
1. Launch the application.
2. Suspend the application in the background.
3. Select the application icon again to relaunch the applicaiton.
ACTUAL RESULTS: A second instance of the application is launched.
EXPECTED RESULTS: There should only be one instance of the application, and focus should return to the application when selecting the icon for a 2nd time.
How to detect another instance in Qt enviroment?

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Thanks every body!
I work it out,
Just need to modify XXX_harmattan.desktop file to "Exec=/usr/bin/invoker --type=d -s /opt/XXX/bin/XXX",
then the invoker will keep the application only one instance, and this method work ok only on N9 device, on the QEMU , it has no effect.

Please note, by using with invoker, the "main" function must be exported by "Q_DECL_EXPORT" instruction,
otherwise, the application can't be launched by touching the icon of desktop.

ref: http://developer.qt.nokia.com/wiki/S...n_Applications

:-D

[kkrish]

Check the link, it is well describe. I hope this will be helpful to you.

[kusumk]

http://harmattan-dev.nokia.com/docs/...einstance.html

Please check this link if you are developing for Meego Harmattan.

[vuorisalmi]

http://harmattan-dev.nokia.com/docs/...einstance.html

Please check this link if you are developing for Meego Harmattan.

A better link to the full documentation:
http://harmattan-dev.nokia.com/docs/...html/main.html

Note that you need to adjust the --type attribute according to the type of your application. If your application is a Qt Quick Components application based on the template generated by the QtSDK, it would be --type=d. Other possible values are q, m, and e.

[kunal_the_one]

I have shared my experiences here, It might help as well

http://kunalmaemo.blogspot.com/2011/...harmattan.html

[rocjohn]

Thanks every one!

[rocjohn]

Thanks every body!
:-D