UWP App FileLoadException WindowsRuntime 仅发生在移动设备上

Question

将商店生成的捆绑包部署到我的 Windows 10 移动版设备后，我的应用程序出现问题。我也将此上传到应用商店审核团队，但他们经常看到崩溃。所以我创建了一个空白项目来尝试找出问题所在。

空白应用程序仅包含一个函数，用于尝试使用 StorageFolder API 查找文件夹。如果它不存在，那么它只会显示一条消息，说它没有找到。我还用 try/catch 围绕这个函数，因为我相信代码的这个区域是我问题的罪魁祸首。

这是 Github 上的空白项目：https://github.com/cmakthat/MobileCrashTesting

这是从 Visual Studio 生成的包：https://1drv.ms/f/s!Anec4-FVkNsbhdtfR82xskiDviPW6g

更具体地说，这里也是代码：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Storage;
using Windows.UI.Popups;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

namespace MobileTestingCrash
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App : Application
    {
        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            this.InitializeComponent();
            this.Suspending += OnSuspending;

            try
            {

                deleteTempClips();
            }
            catch(Exception ex)
            {
                MessageDialog dia = new MessageDialog("App init exception: " + ex.ToString());
                dia.ShowAsync();
            }
        }

        public static async void deleteTempClips()
        {
            StorageFolder storageFolder = ApplicationData.Current.LocalFolder;

            IStorageItem storageItem = await storageFolder.TryGetItemAsync("Temp");

            if ( storageItem == null )
            {
                MessageDialog dia = new MessageDialog("Item never found");
                dia.ShowAsync();
            }
            return;
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used such as when the application is launched to open a specific file.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override void OnLaunched(LaunchActivatedEventArgs e)
        {
            Frame rootFrame = Window.Current.Content as Frame;

            // 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();

                rootFrame.NavigationFailed += OnNavigationFailed;

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                }

                // Place the frame in the current Window
                Window.Current.Content = rootFrame;
            }

            if (e.PrelaunchActivated == false)
            {
                if (rootFrame.Content == null)
                {
                    // When the navigation stack isn't restored navigate to the first page,
                    // configuring the new page by passing required information as a navigation
                    // parameter
                    rootFrame.Navigate(typeof(MainPage));
                }
                // Ensure the current window is active
                Window.Current.Activate();
            }
        }

        /// <summary>
        /// Invoked when Navigation to a certain page fails
        /// </summary>
        /// <param name="sender">The Frame which failed navigation</param>
        /// <param name="e">Details about the navigation failure</param>
        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            //TODO: Save application state and stop any background activity
            deferral.Complete();
        }
    }
}

以下是部署到我的 Windows 10 移动设备时的概要：

• 在 Visual Studio 上以调试模式部署：工作
• 在 Visual Studio 上以发布模式部署：Works
• 部署“_Test”包：工作
• 在其中部署“appxupload”包：FileLoadException

我得到的 FileLoadException 如下图所示：

所以现在我不知道该怎么做。由于此阻止程序，我的应用程序无法获得商店的批准。我最初的项目几周前还在工作，但现在突然间我开始遇到这些崩溃并且我没有改变任何重大的东西。有什么想法吗？

Answer 1

在其中部署“appxupload”包：FileLoadException

您不能将appxupload 直接部署到移动设备中。因为appxupload 文件不完整。您可以通过将appxupload 文件后缀名修改为zip 并进行探索来验证这一点。它包含两个文件，appxbundle 文件和appxsym 文件。

并且appxsym 将在appxupload 文件上传到存储时使用。存储云编译后会生成完整的appxbundle文件。并且完整的文件等于您案例中描述的 _Test 包。

因此，部署“appxupload”包并不是一个好习惯。