[英]how to get value from listview in cascade Blackberry
Well I am just trying to get the value from the list-view on selection and pass it to the next screen(page). 好吧,我只是想从选择列表视图中获取值并将其传递到下一个屏幕(页面)。 But I am unable to do as it shows error like
但我无法做,因为它显示错误
asset:///main.qml:25: TypeError: Result of expression 'dataModel.model' [undefined] is not a function.
asset:///main.qml:25:TypeError:表达式'dataModel.model'[undefined]的结果不是函数。
My following piece of code is as follows 我的下面一段代码如下
This code is of my main.qml 这段代码是我的main.qml
NavigationPane
{
id:navi
Page
{
Container
{
background: Color.Transparent
topMargin:2.0
TextField {
id: lb1
text:""
}
ListView
{
topMargin: 2.0
dataModel: XmlDataModel { source: "model.xml" }
onTriggered: {
console.log("onTriggered");
// Retrieve the selected item
var selectedItem = dataModel.data(indexPath);
lb1.text = selectedItem.status;
pushed.lb2.text="You Selected :" + lb1.text;
navi.push(pushed)
}
}
}
}
attachedObjects: [
Page2 {
id: pushed
}
]
}
This code is of my second page Page2.qml, where I want to retrieve the info from the main.qml 这段代码是我的第二页Page2.qml,我想从main.qml中检索信息
import bb.cascades 1.0
Page {
property alias lb2: lb2
Container {
horizontalAlignment: HorizontalAlignment.Center
Label {
id:lb2
horizontalAlignment: HorizontalAlignment.Center
verticalAlignment: VerticalAlignment.Center
text: "You Selected :" + lb1
}
}
}
I am new to this development. 我是这个发展的新手。
You can get current item of the model on Trigger like as below code.. 您可以在Trigger上获取模型的当前项,如下面的代码所示。
onTriggered: {
var selectedItem = dataModel.data(indexPath);
textField.text = selectedItem.status;
}
You can learn more from Responding to selection . 您可以从响应选择中了解更多信息。
Updated: 更新:
You have to set Alias for pass data from one page to another page. 您必须将传递数据的别名从一个页面设置为另一个页面。
Some problem in your error.. 你错误中的一些问题......
1)Remove text in below line in OnTriggerd. 1)删除OnTriggerd中下面一行的文本。
pushed.lb2 ="You Selected :" + lb1.text;
2) Set Alias properly 2)正确设置别名
property alias lb2: lb2.text
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