我即将完成我的第一个 Windows 应用商店应用程序，过去两天我在使用 Windows 应用程序认证工具包进行应用程序测试期间遇到了问题。
测试在“崩溃和挂起”测试中失败，我收到以下消息：
Crashes and hangs
Error Found: The crashes and hangs test detected the following errors:
Application ....................0.0.12_x86__jarrs3vj594qe was detected by Windows Error Reporting and experienced a crash or hang.
Impact if not fixed: An app that stops responding or crashes can cause data loss and is a poor user experience.
How to fix: Investigate, debug the executable(s) in question to identify and fix the problem, then rebuild and re-test the app.
在调试模式下使用暂停和关闭进行一些测试后，我发现我的应用程序在以下情况下崩溃：运行 i 调试 => 暂停和关闭 => 再次在调试中运行。并且错误说 SuspensionManager 失败：weather.Common.SuspensionManager.RestoreAsync();
我认为这个问题与我的“扩展启动画面”有关，没有“扩展启动画面”我没有收到这个错误，并且应用程序通过了“崩溃和挂起”测试。这是 App.xaml.cs 和扩展启动画面的代码：
sealed partial class App : Application
{
// Defining gloabal variables used across the App
public string[] NavigateData { get; set; }
public NavigationCacheMode NavigationCacheMode { get; set; }
public parameterItem max1DayAgo = new parameterItem();
public parameterItem min1DayAgo = new parameterItem();
public parameterItem max1WeekAgo = new parameterItem();
public parameterItem min1WeekAgo = new parameterItem();
public parameterItem max1MonthAgo = new parameterItem();
public parameterItem min1MonthAgo = new parameterItem();
public List<NameValueItem> tempTrends24Hours = new List<NameValueItem>();
public List<NameValueItem> tempTrends30Days = new List<NameValueItem>();
public List<NameValueItem> windSpeedTrends24Hours = new List<NameValueItem>();
public List<NameValueItem> windSpeedTrends30Days = new List<NameValueItem>();
public List<NameValueItem> windDirectionTrends24Hours = new List<NameValueItem>();
public List<NameValueItem> windDirectionTrends30Days = new List<NameValueItem>();
public List<NameValueItem> windChillTrends24Hours = new List<NameValueItem>();
public List<NameValueItem> windChillTrends30Days = new List<NameValueItem>();
public List<NameValueItem> humidityTrends24Hours = new List<NameValueItem>();
public List<NameValueItem> humidityTrends30Days = new List<NameValueItem>();
public string appBackgGround;
public App()
{
this.InitializeComponent();
this.Suspending += OnSuspending;
}
protected async override void OnLaunched(LaunchActivatedEventArgs args)
{
//
if (args.PreviousExecutionState == ApplicationExecutionState.Running)
{
Window.Current.Activate();
return;
}
Frame rootFrame = Window.Current.Content as Frame;
//Getting live tile data
var uris = new List<Uri>
{
new Uri("..........WebService.asmx/GetFirstTile"),
new Uri("............./GetSecondTile"),
new Uri("................./GetStatisticTile"),
new Uri(".............../GetNewsTile1"),
new Uri("............../GetNewsTile2"),
};
TileUpdater LiveTileUpdater = TileUpdateManager.CreateTileUpdaterForApplication();
LiveTileUpdater.EnableNotificationQueue(true); // Enable notifications
LiveTileUpdater.Clear(); // Clear the current set of updates
LiveTileUpdater.StartPeriodicUpdateBatch(uris, PeriodicUpdateRecurrence.HalfHour);
//getting bacground image
try
{
ServiceReference.WebServiceSoapClient webServiceObj = new ServiceReference.WebServiceSoapClient();
appBackgGround = await webServiceObj.GetBackgroundImageAsync();// Get the name of the Background picture
}
catch
{
appBackgGround = "backgroundImageBlueSky.jpg";
}
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
{
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
weather.Common.SuspensionManager.RegisterFrame(rootFrame, "appFrame");
// Her we set the application background Image for all pages "backgroundImageBlueSky.jpg"
rootFrame.Background = new ImageBrush
{
Stretch = Windows.UI.Xaml.Media.Stretch.UniformToFill,
ImageSource = new BitmapImage { UriSource = new Uri("ms-appx:///Assets/" + appBackgGround) }
};
if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
await weather.Common.SuspensionManager.RestoreAsync();
}
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
if (rootFrame.Content == null)
{
// Navigating to the extended splash screen
if (!rootFrame.Navigate(typeof(ExtendedSplashScreen), rootFrame.GetNavigationState()))
{
throw new Exception("Failed to create initial page");
}
}
// About page
var _Helper = new Flyouts.SettingsHelper();
_Helper.AddCommand<Flyouts.About>("About");
Window.Current.Activate();
}
private async void OnSuspending(object sender, SuspendingEventArgs e)
{
var deferral = e.SuspendingOperation.GetDeferral();
//TODO: Save application state and stop any background activity
await weather.Common.SuspensionManager.SaveAsync();
deferral.Complete();
}
}
扩展启动画面的代码：这里我做了一些 web 服务调用，以便为第一页加载数据。
public sealed partial class ExtendedSplashScreen : Page
{
public ExtendedSplashScreen()
{
this.InitializeComponent();
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
/*
* ........
* ..........
* ...........
* ...........
* ............
* Here i do some webservice calls to get data for the first page(Mainpage
*
*/
(App.Current as App).NavigateData = startupData;// save the data for the Mainpage to the Global variables
this.Frame.SetNavigationState(e.Parameter as string);
this.Frame.Navigate(typeof(MainPage));// Finally navigate to the Mainpage
}
}
}
有什么想法可以解决这个问题吗？