具有给定xml模型的Listview

嗨，我是黑莓10级联开发的新手

我想创建一个包含以下数据模型的列表（位于Assets文件夹中）

Categories.xml

 <?xml version="1.0" encoding="utf-8"?>
 <MasterData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 <CategoryList>
    <Category>
       <CategoryId>12</CategoryId>
       <CategoryNameEn>Banks &amp; Investments</CategoryNameEn>
       <CategoryImageName>banks.png</CategoryImageName>
       <DisplayOrder>1</DisplayOrder>
    </Category>
    <Category>
       <CategoryId>15</CategoryId>
       <CategoryNameEn>Car Rental</CategoryNameEn>
       <CategoryImageName>cars.png</CategoryImageName>
       <DisplayOrder>2</DisplayOrder>
    </Category>
    <Category>
       <CategoryId>19</CategoryId>
       <CategoryNameEn>Services</CategoryNameEn>
       <CategoryImageName>services.png</CategoryImageName>
       <DisplayOrder>3</DisplayOrder>
    </Category>
    <Category>
       <CategoryId>18</CategoryId>
       <CategoryNameEn>Real Estate &amp; Constructions</CategoryNameEn>
       <CategoryImageName>construction.png</CategoryImageName>
       <DisplayOrder>5</DisplayOrder>
    </Category>
    <Category>
       <CategoryId>2</CategoryId>
       <CategoryNameEn>Hotels &amp; Apartments</CategoryNameEn>
       <CategoryImageName>hotels.png</CategoryImageName>
      <DisplayOrder>7</DisplayOrder>
    </Category>
 </CategoryList>

输出应如下图所示。

但是列表是空的。类别名称不绑定到列表。

---

我不知道我的代码出了什么问题。请解决我的问题。

这里，我没有修复您的XML，只是一个如何修复它的小示例。XML:

 <model>
    <item CategoryNameEn="Banks &amp; Investments" CategoryId="12"  CategoryImageName="banks.png" DisplayOrder="1"/>
    <item CategoryNameEn="Banks &amp; Investments2" CategoryId="33"  CategoryImageName="banks2.png" DisplayOrder="2" />    
 </model>

---

可能重复的hi-Kernald你能帮我找出我代码中的错误吗。请您使用上面的xml和listview并创建简单的项目来找出错误。谢谢我回答了你的第一个问题。我建议你看看控制台。您会立即看到错误……我已经像上面那样更改了模型（categories.xml）。但是现在我也没有得到输出。我在控制台上得到这个消息。“8月8日05:28:13.331 com.example.STCDirectory.testDev_TCDirectorye0359adc.253837444默认9000通知XmlDataModel:无法设置”asset:///models/categories.xml'作为源，当前仅支持文件路径。'我已从路径中删除资产：//，然后显示项，但显示的是CategoryId，而不是categoryNameEn。它显示文本：

ListItemData.categoryNameEn

，因此应该显示该文本。您必须对XML做了一些操作，检查它的命名是否正确

 <model>
    <item CategoryNameEn="Banks &amp; Investments" CategoryId="12"  CategoryImageName="banks.png" DisplayOrder="1"/>
    <item CategoryNameEn="Banks &amp; Investments2" CategoryId="33"  CategoryImageName="banks2.png" DisplayOrder="2" />    
 </model>

ListView {
    dataModel: XmlDataModel {

        source: "asset:///categories.xml"
    }
    // The ListItemComponent defines how "listItem" items should appear.
    listItemComponents: [
        ListItemComponent {
            type: "item" //setting the node name
            Container {
                preferredWidth: 748
                preferredHeight: 50
                background: Color.Blue

                layout: StackLayout {
                    orientation: LayoutOrientation.LeftToRight
                }

                Label {
                    text: ListItemData.CategoryNameEn //setting the node
                    verticalAlignment: VerticalAlignment.Center
                    // Apply a text style to create a title-sized font
                    // with normal weight
                    textStyle {
                        base: SystemDefaults.TextStyles.TitleText
                        fontWeight: FontWeight.Normal
                    }
                }
                Container {
                    horizontalAlignment: HorizontalAlignment.Fill
                    verticalAlignment: VerticalAlignment.Center
                    preferredWidth: 50
                    preferredHeight: 50
                    //background: Color.Blue

                    layout: StackLayout {
                        orientation: LayoutOrientation.RightToLeft
                    }
                    // Arrow image
                    ImageView {
                        verticalAlignment: VerticalAlignment.Center
                        translationX: 0
                        translationY: 0
                        imageSource: "asset:///images/arrow.png"
                        rightMargin: 10
                    }
                } // end of inner Container
            } //end of outer container
        } // end of ListItemComponent
    ] //end of listItemComponents
}    //end of ListView