Question

我正在为WP7开发一个应用程序，但我遇到了一个我以前没见过的问题。当我在模拟器中构建并运行它时，它在调试和无调试（ctrl-F5）时都能正常工作。但是在Windows设备上，它只能在调试（F5）中工作。当我在没有调试的情况下在设备上运行它（ctrl-F5）时，应用程序启动，但是当我点击按钮时，它就会退出应用程序。在按钮单击中，我加载一个xml文件。 xml文件设置为Build Action“Content”，Copy to output“Do not copy”。难道我做错了什么？我想知道加载的xaml文件中的以下代码是否与错误有关：

<phone:PhoneApplicationPage 
x:Class="appname.NamesList"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:appname"
xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"
shell:SystemTray.IsVisible="True">

<phone:PhoneApplicationPage.DataContext>
    <local:MainViewModel />
</phone:PhoneApplicationPage.DataContext>

<Grid x:Name="LayoutRoot"
      Background="Transparent">
    <toolkit:LongListSelector ItemsSource="{Binding Persons}">
        <toolkit:LongListSelector.GroupItemsPanel>
            <ItemsPanelTemplate>
                <toolkit:WrapPanel Orientation="Horizontal" />
            </ItemsPanelTemplate>
        </toolkit:LongListSelector.GroupItemsPanel>
        <toolkit:LongListSelector.GroupHeaderTemplate>
            <DataTemplate>
                <Border Background="Transparent">
                    <Border Width="75"
                            Height="75"
                            HorizontalAlignment="Left"
                            Background="{StaticResource PhoneAccentBrush}">
                        <TextBlock VerticalAlignment="Bottom"
                                   Foreground="{StaticResource PhoneForegroundBrush}"
                                   Style="{StaticResource PhoneTextExtraLargeStyle}"
                                   Text="{Binding Key}" />
                    </Border>
                </Border>
            </DataTemplate>
        </toolkit:LongListSelector.GroupHeaderTemplate>
        <toolkit:LongListSelector.GroupItemTemplate>
            <DataTemplate>
                <Border Width="75"
                        Height="75"
                        Background="{StaticResource PhoneAccentBrush}"
                        IsHitTestVisible="{Binding HasItems}">
                    <TextBlock VerticalAlignment="Bottom"
                               Margin="{StaticResource PhoneTouchTargetOverhang}"
                               FontFamily="{StaticResource PhoneFontFamilySemiBold}"
                               FontSize="{StaticResource PhoneFontSizeExtraLarge}"
                               Foreground="{StaticResource PhoneForegroundBrush}"
                               Text="{Binding Key}" />
                </Border>
            </DataTemplate>
        </toolkit:LongListSelector.GroupItemTemplate>
        <toolkit:LongListSelector.ItemTemplate>
            <DataTemplate>
                <Grid Margin="{StaticResource PhoneTouchTargetOverhang}">
                    <HyperlinkButton Name="cmdName" 
                                     Content="{Binding Name}"
                                     Click="cmdName_Click"
                                     Margin="75,0,0,0" 
                                     HorizontalAlignment="Left"
                                     FontSize="40" />
                </Grid>
            </DataTemplate>
        </toolkit:LongListSelector.ItemTemplate>
    </toolkit:LongListSelector>

</Grid>

MainViewModel：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using appname.Helpers;

namespace appname
{
    public class MainViewModel
    {
        public MainViewModel()
        {
            App app = Application.Current as App;

            XmlHelper xmlHelper = new XmlHelper();
            app.persons = xmlHelper.GetPersons(app.gender);
            List<Person> persons = app.persons;


            this.Persons = new LongListCollection<Person,char>(persons, person => person.Name[0]);
        }

        public LongListCollection<Person, char> Persons
        {
            get;
            private set;
        }
    }
}

修改 xml文件读取的代码：

 public List<Person> GetPersons(string gender)
    {
        string xmlPath = "";
        if (gender == "Boys")
            xmlPath = @"Resources/Boys/Xml/Names.xml";
        else if( gender == "Girls" )
            xmlPath = @"Resources/Girls/Xml/Names.xml";

        //Uri uri = new Uri(xmlPath, UriKind.Relative);
        StreamResourceInfo sm = Application.GetResourceStream(new Uri(xmlPath, UriKind.Relative));
        System.Xml.XmlReader xr = System.Xml.XmlReader.Create(sm.Stream);

        XDocument data = XDocument.Load(xr);



        return (from c in data.Descendants("Person")
                orderby c.Attribute("Name")
                select new Person()
                {
                    Name = c.Element("Name").Value,
                    Description = c.Element("Description").Value,
                    ...
                    HasGraph = c.Element("HasGraph").Value
                }).ToList();
    }

修改

<Capabilities>
  <Capability Name="ID_CAP_GAMERSERVICES"/>
  <Capability Name="ID_CAP_IDENTITY_DEVICE"/>
  <Capability Name="ID_CAP_IDENTITY_USER"/>
  <Capability Name="ID_CAP_LOCATION"/>
  <Capability Name="ID_CAP_MEDIALIB"/>
  <Capability Name="ID_CAP_MICROPHONE"/>
  <Capability Name="ID_CAP_NETWORKING"/>
  <Capability Name="ID_CAP_PHONEDIALER"/>
  <Capability Name="ID_CAP_PUSH_NOTIFICATION"/>
  <Capability Name="ID_CAP_SENSORS"/>
  <Capability Name="ID_CAP_WEBBROWSERCOMPONENT"/>
  <Capability Name="ID_CAP_ISV_CAMERA"/>
  <Capability Name="ID_CAP_CONTACTS"/>
  <Capability Name="ID_CAP_APPOINTMENTS"/>
</Capabilities>

Answer 1

您发布的代码没有错。我们需要查看您的XmlHelper课程的代码，以便向您提供详细信息。

但是，我怀疑你是以错误的方式处理资源管理。另外，我建议您尝试将代码包装在try / catch中，然后将MessageBox.Show与异常消息一起使用。

至少应该确保崩溃是否与异常相关。

public MainViewModel()
{
    try
    {
        App app = Application.Current as App;

        XmlHelper xmlHelper = new XmlHelper();
        app.persons = xmlHelper.GetPersons(app.gender);
        List<Person> persons = app.persons;


        this.Persons = new LongListCollection<Person,char>(persons, person => person.Name[0]);
    }
    catch (Exception e)
    {
        MessageBox.Show(e.Message);
    }
}

Answer 2

我的上帝

我尝试在手机上启动另一个应用程序，它也退出了。所以，我重新启动了手机（我以为昨天已经这样做了..），它有效！我很抱歉浪费你的时间！

关心一个尴尬的傻瓜！

在调试和无调试的仿真器中工作，但仅在设备上的调试中工作

2 个答案: