Device incompatible?

[kgregory]

I've been using Qt to develop an app for about a year now with the same phone. I haven't done any development for about 2 months and I opened the app up today to compile some minor changes and deploy to my phone. My phone is listed under "incompatible devices".

The phone is a little old, it's a Samsung Note 5. It runs Android 7.0. I tried updating Android SDK to the latest version and changing the API level in the build settings, but I can't get it to show up as 'compatible'.

Any ideas?

[mvuori]

Devices shouldn't become incompatible by themselves, so try to figure out what has changed during those 2 months in your Qt environment or the device.
Also, it is not common to suffer from problems before realising that hmm... perhaps I could reboot both of these things... Many problems have been solved that way.

[kgregory]

Is there no way to get more information about why it isn't compatible?

[SGaist]

Hi,

Did you do any update to your system in between ? For example: NDK, Android OS, Qt Creator ?

[kgregory]

@SGaist I probably got an android update since the last time I used it. I didn't update Qt creator or NDK since the last time I used it.

@mvuori reboots did not fix this, unfortunately.

[SGaist]

Can you get it listed if you use the adb command directly ?

[kgregory]

@SGaist yes the adb devices -l command lists the device.

[SGaist]

Do you have only one adb executable in your system ?

[kgregory]

@SGaist that's the only one I know of. the adb command only works when I'm in the /AndroidSDK/platform-tools directory.

[SGaist]

It's the same that's is configured in Qt Creator ?

[kgregory]

@SGaist I'm not really sure. Where is that configured?

[SGaist]

I would say path to the NDK.

[kgregory]

@SGaist Yes its the same location that I have configured for devices > android

[SGaist]

I just realised, did you build your application using an API version which is higher than what your Android version supports ?

[kgregory]

I tried building for API level 24. It says my device is API level 24. I was building for API level 25 at some point but I think I may have switched it after I was finished testing in order to deploy to google play.

[J.Hilk]

@kgregory I would also try a different USB-cable, I spend a couple of hours with a similar problem. Apparently my cable broke just enough that the device was detected, but I was unable to transfer any data in-between.

[kgregory]

@J.Hilk I tried a couple of different USB cables and ports to no avail.

I then thought it would be a good idea to update Qt, so I did (to 4.8.0). After that, creator will no longer launch at all. I get a brief 'busy' graphic and then nothing happens when I try to launch it. So I un-installed Qt and re-installed from scratch but I have the same symptom now. I also tried re-booting my machine.

[aha_1980]

@kgregory

Could it be you've hit QTCREATORBUG-21780.

Try starting QtCreator with -noload Android parameter and see if that helps.

[kgregory]

@aha_1980 yes I can successfully launch it that way, but I need Android. Sounds like I'm stuck waiting for a bug fix or a work around?

[aha_1980]

@kgregory it should be fixed in Creator 4.8.1

till then use the workaround described in the report.