protected override async void LoadState(object param, Dictionary <string, object> pageState)
{
base.LoadState(param, pageState);
int id = (int)param;
VideoDataItem item = VideoDataSource.GetItem(id);
if (item != null)
{
OpenFile(item.File);
}
else if (pageState["fileToken"] != null)
{
StorageItemAccessList future = StorageApplicationPermissions.FutureAccessList;
StorageFile file = await future.GetFileAsync(pageState["fileToken"] as string);
future.Clear();
OpenFile(file);
}
if (pageState != null)
{
MediaPlayerState state = pageState["MediaState"] as MediaPlayerState;
if (state != null)
{
MediaPlayer.RestorePlayerState(state);
}
}
}
async void GetProfilePicAsync()
{
string profilePicPlaceholderPath = "ms-appx:///Assets/StoreLogo.scale-400.png";
ProfilePic = new BitmapImage(new Uri(profilePicPlaceholderPath));
ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;
if (localSettings.Values["PerformerImageFolder"] is string token)
{
StorageItemAccessList futureAccessList = StorageApplicationPermissions.FutureAccessList;
StorageFolder profilePicFolder = await futureAccessList.GetFolderAsync(token);
List <string> fileTypeFilter = new List <string>
{
".jpg"
};
var queryOptions = new QueryOptions(CommonFileQuery.DefaultQuery, fileTypeFilter)
{
ApplicationSearchFilter = "System.FileName:*\"" + Name + "\"*"
};
StorageFileQueryResult queryResult = profilePicFolder.CreateFileQueryWithOptions(queryOptions);
var files = await queryResult.GetFilesAsync();
if (files.Count > 0)
{
BitmapImage screen = new BitmapImage();
screen.SetSource(await files[0].GetThumbnailAsync(ThumbnailMode.SingleItem));
ProfilePic = screen;
}
}
}
private async Task AddBackgroundAudioTrack()
{
var picker = new FileOpenPicker();
picker.SuggestedStartLocation = PickerLocationId.MusicLibrary;
picker.FileTypeFilter.Add(".mp3");
picker.FileTypeFilter.Add(".wav");
picker.FileTypeFilter.Add(".flac");
StorageFile audioFile = await picker.PickSingleFileAsync();
if (audioFile != null)
{
StorageItemAccessList storageItemAccessList = StorageApplicationPermissions.FutureAccessList;
storageItemAccessList.Add(audioFile);
BackgroundAudioTrack backgroundTrack = await BackgroundAudioTrack.CreateFromFileAsync(audioFile);
App.Model.MediaComposition.BackgroundAudioTracks.Add(backgroundTrack);
//裁剪，防止播出
if (backgroundTrack.TrimmedDuration > App.Model.MediaComposition.Duration)
{
backgroundTrack.Delay = TimeSpan.Zero;
backgroundTrack.TrimTimeFromEnd = App.Model.MediaComposition.Duration - backgroundTrack.TrimmedDuration;
}
}
else
{
App.Tip("File picking cancelled");
}
}
private async void AddPicturesButton_Tapped(object sender, TappedRoutedEventArgs e)
{
FileOpenPicker filePicker = new FileOpenPicker {
SuggestedStartLocation = PickerLocationId.PicturesLibrary
};
filePicker.FileTypeFilter.Add(".jpg");
filePicker.FileTypeFilter.Add(".jpeg");
filePicker.FileTypeFilter.Add(".png");
filePicker.FileTypeFilter.Add(".bmp");
filePicker.FileTypeFilter.Add(".gif");
filePicker.FileTypeFilter.Add(".tiff");
filePicker.ViewMode = PickerViewMode.Thumbnail;
StorageFile file = await filePicker.PickSingleFileAsync();
if (file != null)
{
try
{
StorageItemAccessList storageItemAccessList = StorageApplicationPermissions.FutureAccessList;
storageItemAccessList.Add(file);
//新建媒体
Media media = new Media();
//缩略图
using (StorageItemThumbnail thumbnail = await file.GetThumbnailAsync(ThumbnailMode.PicturesView))
{
if (thumbnail != null)
{
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(thumbnail);
media.Bitmap = bitmapImage;
}
}
//从文件创建媒体剪辑
MediaClip clip = await MediaClip.CreateFromImageFileAsync(file, new TimeSpan(24, 1, 0));
clip.TrimTimeFromEnd = clip.TrimTimeFromStart = new TimeSpan(12, 0, 0);
media.Clip = clip;
//从颜色创建名称
media.Name = file.Name;
MediaClipList.Add(media);
SplitShowMethod();// SplitView：侧栏
}
catch (Exception)
{
App.Tip("file err");
}
}
else
{
App.Tip("file null");
}
}
protected override void OnNavigatedTo(NavigationEventArgs e) //当本页面成为框架中的活动页时调用
{
//确保我们不会耗尽StoreItemAccessList条目
//当我们不需要坚持这个跨应用程序会话页
//每次结算应该足够。
storageItemAccessList = StorageApplicationPermissions.FutureAccessList;
storageItemAccessList.Clear();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
// Make sure we don't run out of entries in StoreItemAccessList.
// As we don't need to persist this across app sessions/pages
// every time should be sufficient for us.
storageItemAccessList = StorageApplicationPermissions.FutureAccessList;
storageItemAccessList.Clear();
}
public RegisteredDbsService(IEventAggregator events)
{
if (events == null)
{
throw new ArgumentNullException("events");
}
_events = events;
_accessList = StorageApplicationPermissions.FutureAccessList;
var localFolder = ApplicationData.Current.LocalFolder;
_cacheFolder = localFolder.CreateFolderAsync(
"Databases", CreationCollisionOption.OpenIfExists);
}
protected override void SaveState(Dictionary <string, object> pageState)
{
MediaPlayerState state = MediaPlayer.GetPlayerState();
StorageItemAccessList future = StorageApplicationPermissions.FutureAccessList;
future.Clear();
string token = future.Add(file);
pageState.Add("MediaState", state);
pageState.Add("fileToken", token);
base.SaveState(pageState);
if (teardown)
{
MediaPlayer.Dispose();
}
}
public static string Enqueue(this StorageItemAccessList list, IStorageItem item)
{
if (list.MaximumItemsAllowed - 10 >= list.Entries.Count)
{
var first = list.Entries.FirstOrDefault();
var token = first.Token;
list.Remove(token);
}
try
{
return(list.Add(item));
}
catch
{
return(null);
}
}
public static string Enqueue(this StorageItemAccessList list, IStorageItem item)
{
try
{
if (list.Entries.Count >= list.MaximumItemsAllowed - 10)
{
var first = list.Entries.LastOrDefault();
if (first.Token != null)
{
list.Remove(first.Token);
}
}
}
catch { }
try
{
return(list.Add(item));
}
catch
{
return(null);
}
}
public FutureService()
{
_future = StorageApplicationPermissions.FutureAccessList;
}
public FileDatabaseTracker()
{
_folder = ApplicationData.Current.LocalFolder.CreateFolderAsync("opened_databases", CreationCollisionOption.OpenIfExists);
_accessList = StorageApplicationPermissions.FutureAccessList;
}
private async void AddMusicButton_Tapped(object sender, TappedRoutedEventArgs e)
{
FileOpenPicker filePicker = new FileOpenPicker {
SuggestedStartLocation = PickerLocationId.MusicLibrary
};
filePicker.FileTypeFilter.Add(".mp3");
filePicker.FileTypeFilter.Add(".wma");
filePicker.FileTypeFilter.Add(".wav");
filePicker.FileTypeFilter.Add(".asf"); //微软的格式
filePicker.FileTypeFilter.Add(".ogg"); //开源的格式
filePicker.FileTypeFilter.Add(".flac"); //开源的格式
filePicker.FileTypeFilter.Add(".aac");
filePicker.ViewMode = PickerViewMode.Thumbnail;
StorageFile file = await filePicker.PickSingleFileAsync();
if (file != null)
{
try
{
StorageItemAccessList storageItemAccessList = StorageApplicationPermissions.FutureAccessList;
storageItemAccessList.Add(file);
//新建媒体
Media media = new Media();
//缩略图
using (StorageItemThumbnail thumbnail = await file.GetThumbnailAsync(ThumbnailMode.MusicView))
{
if (thumbnail != null)
{
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(thumbnail);
media.Bitmap = bitmapImage;
}
}
//从文件创建媒体剪辑
MediaClip clip = await MediaClip.CreateFromFileAsync(file);
media.Clip = clip;
//从颜色创建名称
media.Name = file.Name;
MediaClipList.Add(media);
SplitShowMethod();// SplitView：侧栏
}
catch (Exception)
{
App.Tip("file err");
}
}
else
{
App.Tip("file null");
}
}