[SailfishDevel] Binding weirdness on Jolla device after deploy with screen locked
Hi all
I have come across some weird behaviour on the Jolla:
Bindings don't seem to work immediately after an app has deployed when
the screen is locked.
To demonstrate this I have created the code snippet at the end of this
mail. To reproduce, create a default Sailfish project, paste the code
into FirstPage.qml.
My code has:
1) an Item dummy with an enabled property bound to applicationActive.
2) a BackgroundItem with an enabled property bound to dummy.enabled
3) a Label in the BackgroundItem with with text property bound to
dummy.enabled
When the app is active, the label should display Correct Label
However, if the app is deployed when the screen is locked, on
unlocking and activating the app
the label text shows Oops Wrong label even though console.log output
suggests that the text has changed to Correct Label.
Also, when the backgroundItem is clicked, the highlight colour is not
shown (but an onClicked event is generated).
The app behaves as expected (label correctly displayed, highlight
colour shown) when:
a) The app is pushed to the left, and then reactivated,
b) The app is deployed while the screen is unlocked (immediately shown
fullscreen),
c) The app is opened from the app icon direct on the Jolla,
d) The app is deployed to the Emulator.
Grüsse
Chris
//Start FirstPage.qml
import QtQuick 2.0
import Sailfish.Silica 1.0
Page {
id: page
Item {
//represents a much more complex object (e.g. c++ plugin)
//reduced to item here for demo purposes
id: dummy
enabled: applicationActive
onEnabledChanged: console.log(QML dummy onEnabledChanged:
+ enabled);
}
BackgroundItem {
enabled: dummy.enabled
onEnabledChanged: console.log(QML BackgroundItem
onEnabledChanged: + enabled);
width: parent.width
height: 160
anchors.horizontalCenter: parent.horizontalCenter
anchors.verticalCenter: parent.verticalCenter
Label {
anchors.horizontalCenter: parent.horizontalCenter
anchors.verticalCenter: parent.verticalCenter
text: dummy.enabled ? Correct Label : Oops! Wrong label
onTextChanged: console.log(QML text onTextChanged: + text);
color: Theme.primaryColor
}
onClicked:console.log(BackgroundItem clicked)
}
}
//End FirstPage.qml
___
SailfishOS.org Devel mailing list
Re: [SailfishDevel] Binding weirdness on Jolla device after deploy with screen locked
Hi Ove That's pretty much the behaviour I get, and the swipe to multitasking and back fixes things. The behaviour 1s 100% reproducible when the screen is locked during deploy, and never occurs when deploying to an unlocked screen. That the problem to do with bindings is only a wild assumption on my part, it could be down to the screen not updating as you suggest. Grüsse Chris Zitat von Ove Kåven o...@arcticnet.no: Den 26. jan. 2014 13:42, skrev christopher.l...@thurweb.ch: Hi all I have come across some weird behaviour on the Jolla: Bindings don't seem to work immediately after an app has deployed when the screen is locked. Are you able to tell the difference between something like this, and the more straightforward issue of the app display simply not updating? I frequently experience the latter immediately after a deploy. If I click anything, or try to use the pulley menu, I can hear the sounds and get the console logs, but the display doesn't start updating before I swipe out to the multitasking view and then reactivate it. Everything works otherwise. ___ SailfishOS.org Devel mailing list ___ SailfishOS.org Devel mailing list
Re: [SailfishDevel] Binding weirdness on Jolla device after deploy with screen locked
Just to confirm this, I'm having same issues with my app. If I launch it and put the screen off right away the application's screen is not updated when I open it again from the cover. Have to swipe it back to home and reopen it to get updated window. -- Tero 2014/1/26 christopher.l...@thurweb.ch: Hi Ove That's pretty much the behaviour I get, and the swipe to multitasking and back fixes things. The behaviour 1s 100% reproducible when the screen is locked during deploy, and never occurs when deploying to an unlocked screen. That the problem to do with bindings is only a wild assumption on my part, it could be down to the screen not updating as you suggest. Grüsse Chris Zitat von Ove Kåven o...@arcticnet.no: Den 26. jan. 2014 13:42, skrev christopher.l...@thurweb.ch: Hi all I have come across some weird behaviour on the Jolla: Bindings don't seem to work immediately after an app has deployed when the screen is locked. Are you able to tell the difference between something like this, and the more straightforward issue of the app display simply not updating? I frequently experience the latter immediately after a deploy. If I click anything, or try to use the pulley menu, I can hear the sounds and get the console logs, but the display doesn't start updating before I swipe out to the multitasking view and then reactivate it. Everything works otherwise. ___ SailfishOS.org Devel mailing list ___ SailfishOS.org Devel mailing list ___ SailfishOS.org Devel mailing list
