Android 5.1 Issues

SamGrant

When running my app on Android 5.1... if I push the app to the background, then bring it back to the foreground, the UI does not show.

This does not happen on Android 4.x.

Using QT 5.5.

kolegs

Are you debugging application? I've noticed that this happens only on debug (android 4.x, dont have device with 5.x), but when I only run application there is no problem

SamGrant

Nope. Running the app on-device. Debug and Release mode both exhibit the same thing....once the app is backgrounded and then foregrounded, the UI does not return...

SamGrant

Actually, this seems to be a QT 5.5 issue... recompiling with QT 5.4 works.

SGaist

Hi,

Sounds like a regression. You should check the bug report system to see if it's something known.

SamGrant

Update:
Actually, still getting the same result with 5.4....

Testing on Droid Turbo with Android 5.1....looks like it may be an Android 5.1 issue. Anyone else seen this?

SamGrant

Update 2:

using this code seems to help on Android 5.1:
Connections {
target: Qt.application
onStateChanged: {
console.debug("applicationStateChanged: " + Qt.application.state)
if (Qt.application.state === Qt.ApplicationActive) {
applicationWindow.show()
//we're back from idle
}
else {
applicationWindow.hide()
//going to background
}
}
}

SamGrant

BUT>>>>>>

That causes Android 4.4.4 to exhibit the behavior.

SGaist

You should check and fill a bug report about it. You can also talk about it on the #necessitas IRC channel

SamGrant

Actually... Tried it on another Android 4 device (a newer one)...and it works as expected, with the Connections code. Going to try this on other Android 4+ devices before filing a bug report.

The other device was running a 4.4.4 version of Cyanogenmod...so...