UWP应用发布版本挂在初始屏幕上吗？

Question

Debug versions (86, 64, ARM) all work fine, release versions build fine, but when they run all that happens is my app window opens and remains blank (white background). The only errors I see in the output are a whole bunch of:

 ...PDB file was not present when IL code was compiled to native.

I'm not sure if the missing .pdb files are the culprit - pretty sure they're not, cause they're just for debugging purposes right? Anyways, this is the first UWP app I have tried to get ready for the Windows Store, and not completely sure if I have to do anything special like sign it to test release versions on my own computer?

Edit 1: Thank you @Alan for your suggestions, manually uninstalling the app sometimes gets me past the blank window to load the app bar, but then I am getting these errors when it doesn't hang on the splash screen:

Debugger Error 1 , Debugger Error 2

I have done nothing special to the splash screen, loaded all my visual assets using the built in tools in manifest, and have not modified App.xaml.cs from its default. Here is my Mainpage.cs:

 using Sublist.Classes;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using Windows.UI.Xaml;
 using Windows.UI.Xaml.Controls;
 using Windows.UI.Xaml.Navigation;

 namespace Sublist
 {

public sealed partial class MainPage : Page
{
    const string TAG = "MainPage: ";

    // for loading and saving user data and settings
    public static DataHandler dataHandler;

    public static MasterList<Entry> masterList;
    //public static int listViewSelectedIndex = -1;

    public MainPage()
    {
        this.InitializeComponent();

        dataHandler = new DataHandler(this);
        masterList = new MasterList<Entry>();

        // load user data
        if (dataHandler.userDataList != null)
            masterList = dataHandler.userDataList;

        masterList.UpdateListView(this);
    }

    protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        dataHandler.LoadUserSettings();
    }


    private void AppBarAdd_Click(object sender, RoutedEventArgs e)
    {
        masterList.AddRow(this);
    }

    private void AppBarRemove_Click(object sender, RoutedEventArgs e)
    {
        if (!(mainListView.SelectedIndex < 0))
        {
            masterList.RemoveRow(this);
        }
    }

    private void AppBarMoveDown_Click(object sender, RoutedEventArgs e)
    {

    }

    private void AppBarMoveUp_Click(object sender, RoutedEventArgs e)
    {

    }

    private void AppBarIndent_Click(object sender, RoutedEventArgs e)
    {
        // indent the row control if currently selected index is a list view item
        if (-1 < mainListView.SelectedIndex && mainListView.SelectedIndex < mainListView.Items.Count)
        {
            // but don't allow more than one indent past above row's indent level
            RowControl rc = (RowControl)mainListView.Items[mainListView.SelectedIndex];
            int indexMinus1 = mainListView.SelectedIndex - 1;
            if (-1 < indexMinus1 && rc.indentProp <= masterList[indexMinus1].indent)
            {
                rc.indentProp++;
            }
        }
        // then update list view
        masterList.UpdateListView(this);
    }

    private void AppBarUnindent_Click(object sender, RoutedEventArgs e)
    {
        // unindent the row control if currently selected index is a list view item
        if (-1 < mainListView.SelectedIndex && mainListView.SelectedIndex < mainListView.Items.Count)
        {
            // but don't allow unindenting off left side of page
            RowControl rc = (RowControl)mainListView.Items[mainListView.SelectedIndex];
            if (rc.indentProp > 0)
            {
                rc.indentProp--;
            }
        }
        // then update list view
        masterList.UpdateListView(this);
    }

    public void AppBarShowCompl_Click(object sender, RoutedEventArgs e)
    {
        dataHandler.SaveUserSettings();

        masterList.UpdateListView(this);
    }

    public void AppBarMarkAsCompleted_Click(object sender, RoutedEventArgs e)
    {
        // toggle hidden state of active entry
        if (-1 < mainListView.SelectedIndex && mainListView.SelectedIndex < masterList.Count)
        {
            masterList[mainListView.SelectedIndex].completed = (masterList[mainListView.SelectedIndex].completed) ? false : true;

            masterList.UpdateListView(this);
        }
    }

}
}

I have added the FileService and SettingsService classes from the opensource Template10 to the project.

The build setting "compile with .NET Native tool chain" was unchecked, I've tried deploying with it checked/unchecked for both debug/release versions, and now the debug version also often hangs on the splash screen? With it checked, I get a whole bunch of these errors as well:

'Sublist.exe' (Win32): Loaded 'C:\Windows\System32\biwinrt.dll'. Skipped loading symbols. Module is native, and native debugging is currently disabled.

I've tried downloading the server symbols with no success...

Answer 1

I found the hang happens at the following line in GetIfFileExitsAsync.

retval = await Windows.Storage.ApplicationData.Current.LocalFolder.GetFileAsync(key);

I made the following change in you code and it should work now.

In DataHandler's constructor, use Task.Run to initialize the userDataList.

public DataHandler(MainPage mp)
{
    mainPage = mp;

    settingsHelper = new SettingsHelper();
    fileHelper = new FileHelper();

    LoadUserSettings();
    Task.Run(() =>
    {
        userDataList = LoadUserData();
    });
    Task.WaitAll();
}

I am still not sure why the .net native compile will make this issue, but will try to simplify the project and report it in MS internal channel.