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
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