// 进入VideoDetailsPage
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
LoadingControl.IsLoading = true;
viewmodel = FolderViewModel.GetInstance();
foreach (var video in viewmodel.LikeVideos)
{
if (video.Name == viewmodel.SelectedVideo.Name)
{
LikeButton.Content = "取消收藏";
break;
}
}
StorageFile VideoFile = await Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.GetFileAsync(viewmodel.SelectedVideo.Token);
if (VideoFile != null)
{
var stream = await VideoFile.OpenAsync(Windows.Storage.FileAccessMode.Read);
mediaElement.SetSource(stream, VideoFile.ContentType);
}
StarsRating.Value = (double)viewmodel.SelectedVideo.Stars;
if (viewmodel.SelectedVideo.NotePath != "")
{
StorageFolder folder = ApplicationData.Current.LocalFolder;
StorageFile file = await folder.GetFileAsync(viewmodel.SelectedVideo.Name + ".rtf");
if (file != null)
{
try
{
Windows.Storage.Streams.IRandomAccessStream randAccStream =
await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
// Load the file into the Document property of the RichEditBox.
EditZone.Document.LoadFromStream(Windows.UI.Text.TextSetOptions.FormatRtf, randAccStream);
}
catch (Exception)
{
ContentDialog errorDialog = new ContentDialog()
{
Title = "File open error",
Content = "Sorry, I couldn't open the file.",
PrimaryButtonText = "Ok"
};
await errorDialog.ShowAsync();
}
}
}
viewmodel.VideoAdd();
videoName.Text = viewmodel.SelectedVideo.Name;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
//Frame rootFrame = Window.Current.Content as Frame;
//SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = rootFrame.CanGoBack ?
// AppViewBackButtonVisibility.Visible : Windows.UI.Core.AppViewBackButtonVisibility.Collapsed;
//base.OnNavigatedTo(e);
viewModel = FolderViewModel.GetInstance();
// folders拷贝viewmodel中的folders用于与数据库关联
folders = viewModel.Folders;
// videos不需要保存到数据库中，每次打开页面都把文件夹下的文件读出来即可
foreach (var eachfolder in folders)
{
showVideoInFolder(eachfolder.Token);
}
// 挂起
}
/// <summary>
/// 重载函数处理传入参数
/// </summary>
/// <param name="e">Folder类型，为即将显示的界面的根目录</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
//SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = Frame.CanGoBack ?
// AppViewBackButtonVisibility.Visible : Windows.UI.Core.AppViewBackButtonVisibility.Collapsed;
//base.OnNavigatedTo(e);
MainStackPanel.Visibility = Visibility.Collapsed;
EmptyFolderText.Visibility = Visibility.Visible;
viewModel = FolderViewModel.GetInstance();
// 就是currentFolder = e.parameter as folder 然后判断一下不为null
if (e.Parameter is Folder currentFolder)
{
currentRootFolder = currentFolder;
try
{
folders.Clear();
bool wheatherShowEmpty = true;
var folder = await Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.GetFolderAsync(currentRootFolder.Token);
if (folder != null)
{
var foldersQuery = folder.CreateFolderQuery();
foreach (var eachfolder in await foldersQuery.GetFoldersAsync())
{
wheatherShowEmpty = false;
string token = Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(eachfolder);
folders.Add(new Folder(token, eachfolder.Name, await GetNumInFolder(eachfolder)));
}
var filesQuery = new Windows.Storage.Search.QueryOptions();
filesQuery.FileTypeFilter.Add(".mp4");
filesQuery.FileTypeFilter.Add(".wma");
filesQuery.FileTypeFilter.Add(".avi");
var query = folder.CreateFileQueryWithOptions(filesQuery);
var files = await query.GetFilesAsync();
foreach (var file in files)
{
BitmapImage bitmapImage = await Common.GetThumbnailOfVideo(file);
wheatherShowEmpty = false;
Video temp = await viewModel.Search(file.Path);
string videoToken;
string date = DateTimeOffset.Now.Year.ToString() + "/" + DateTimeOffset.Now.Month.ToString() + "/" + DateTimeOffset.Now.Day.ToString();
if (temp == null)
{
videoToken = Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(file);
videos.Add(new Video(videoToken, file.Name, date, "", 0, 0, 0, 0, file.Path, bitmapImage));
}
else
{
temp.Date = date;
videos.Add(temp);
}
}
}
if (!wheatherShowEmpty)
{
MainStackPanel.Visibility = Visibility.Visible;
EmptyFolderText.Visibility = Visibility.Collapsed;
}
}
catch (Exception)
{
await new MessageDialog("Path is not valid").ShowAsync();
}
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
viewModel = FolderViewModel.GetInstance();
histories = viewModel.Histories;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
viewmodel = FolderViewModel.GetInstance();
likes = viewmodel.LikeVideos;
}