[SailfishDevel] Pass data from MainPage into CoverPage

[Lucien XU]

Hello Mike,

I don't think it is a good idea to alias someting that is in another 
component. Usually, you alias a property of a child component to expose it 
outside.

But you can access the properties defined in appWindow from the cover page. 
Isn't that enough ?

Cheers,
Lucien

Le lundi 3 juin 2013 12:58:27 Michael Faro-Tusino a écrit :
> Hi guys,
> 
> This is a very beginner question I know, but still having some troubles.
> 
> I am trying to create a Cover Page for my app, that uses information from
> the Main Page (note: this is not main.qml but MainPage.qml).
> 
> I've attempted to set up property aliases like so:
> 
> //main.qml
> import QtQuick 1.1
> import Sailfish.Silica 1.0
> import "pages"
> import "cover"
> 
> ApplicationWindow
> {
>        id: appWindow
>     property string total
>     property string perPerson
>     initialPage: MainPage { }
>     cover: CoverPage{ }
> }
> 
> //MainPage.qml
> import QtQuick 1.1
> import Sailfish.Silica 1.0
> 
> Page{
>     id: mainPage
>     property alias total : appWindow.total
>     property alias perPerson : appWindow.perPerson
> }
> 
> //coverPage.qml
> import QtQuick 1.1
> import Sailfish.Silica 1.0
> 
> 
> 
> Page {
>     id: coverPage
>     property alias total: appWindow.total
>     property alias perPerson: appWindow.perPerson
> }
> 
> I get errors saying that appWindow cannot be found, due to errors caused by
> using initialPage: MainPage{} and cover: CoverPage{} in my main.qml.
> 
> I don't see why setting Initial and cover the way I did results in errors,
> (so that is something I'd like explained if possible) and secondly, could
> someone help me pass the information from MainPage to CoverPage (it updates
> when a function is executed on MainPage if that makes a difference).
> 
> Thanks in advance,
> Michael
> 
> 
> -------------------------Michael Faro-Tusino
> Twitter: @MFaroTusino
> Website: My Nokia Blog