internal static async Task RunOnCoreDispatcherIfPossible(Func <Task> action, bool runAnyway = true)
{
CoreDispatcher dispatcher = null;
try
{
if (CustomDispatcher == null)
{
dispatcher = CoreApplication.MainView?.CoreWindow?.Dispatcher;
}
else
{
dispatcher = CustomDispatcher;
}
}
catch { }
if (dispatcher != null)
{
await dispatcher.RunTaskAsync(async() => { await action(); });
}
else if (runAnyway)
{
await action();
}
}
/// <summary>
/// Executes the action on the UI thread asynchronously.
/// </summary>
/// <param name="action">The action to execute.</param>
/// <returns></returns>
public virtual Task OnUIThreadAsync(Func <Task> action)
{
ValidateDispatcher();
#if WINDOWS_UWP
return(dispatcher.RunTaskAsync(action));
#else
return(dispatcher.InvokeAsync(action).Task.Unwrap());
#endif
}
private static async Task <string> GetPinFromUserAsync(CoreDispatcher dispatcher)
{
return(await dispatcher.RunTaskAsync(async() =>
{
var pinBox = new TextBox();
var dialog = new ContentDialog()
{
Title = "Enter Pin",
PrimaryButtonText = "OK",
Content = pinBox
};
await dialog.ShowAsync();
return pinBox.Text;
}));
}
private static async Task ShowPinToUserAsync(CoreDispatcher dispatcher, string strPin)
{
await dispatcher.RunTaskAsync(async() =>
{
var messageDialog = new MessageDialog($"Enter this PIN on the remote device: {strPin}");
// Add commands
messageDialog.Commands.Add(new UICommand("OK", null, 0));
// Set the command that will be invoked by default
messageDialog.DefaultCommandIndex = 0;
// Set the command that will be invoked if the user cancels
messageDialog.CancelCommandIndex = 0;
// Show the Pin
await messageDialog.ShowAsync();
});
}
/// <summary>
/// Loads songs from a specified folder into the library. <seealso cref="LoadCommand"/>
/// </summary>
public async void Load()
{
FolderPicker picker = new FolderPicker()
{
SuggestedStartLocation = PickerLocationId.MusicLibrary
};
picker.FileTypeFilter.Add(".mp3");
StorageFolder folder = await picker.PickSingleFolderAsync();
if (folder != null)
{
var filelist = await Macalifa.Common.DirectoryWalker.GetFiles(folder.Path);
foreach (var x in filelist)
{
StorageFile file = await StorageFile.GetFileFromPathAsync(x);
Path = file.Path;
using (var stream = await Dispatcher.RunTaskAsync(GetFileAsStream))
{
if (stream != null)
{
var path = file.Path;
if (TracksCollection.Elements.All(t => t.Path != path))
{
var m = await CreateMediafile(stream);
TracksCollection.AddItem(m);
//TracksCollection.Elements.Add(m);
//ByStringGroupedCollection.AddItem(Mediafile);
db.Insert(m);
}
}
}
}
}
}