我正在为我为 windows 商店制作的应用程序制作 windows phone 8 应用程序,并且我正在使用 PhotoChooser 任务让用户上传个人资料图片。
在商店版本中,我使用了流和 FileOpenPicker,但我不知道如何将流与 PhotoChooser 任务一起使用。
这就是我在 Windows 商店中的做法,非常完美:
StorageFile image;
public bunForm()
{
image = null;
this.InitializeComponent();
}
private async void choosePic(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.ViewMode = PickerViewMode.Thumbnail;
// Filter to include a sample subset of file types
openPicker.FileTypeFilter.Clear();
openPicker.FileTypeFilter.Add(".bmp");
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".jpg");
// Open a stream for the selected file
var file = await openPicker.PickSingleFileAsync();
if (file != null)
{
image = file;
var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
bunPic.Visibility = Visibility.Visible;
// Ensure a file was selected
if (file != null)
{
// Ensure the stream is disposed once the image is loaded
using (IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
// Set the image source to the selected bitmap
BitmapImage bitmapImage = new BitmapImage();
await bitmapImage.SetSourceAsync(fileStream);// bitmapImage.UriSource.ToString();
bunPic.Source = bitmapImage;
}
}
}
}
这是我在 Windows Phone 8 上尝试的方式: 但是 (openPicker.PickSingleFileAsync();) 行给了我错误。
public BunForm()
{
InitializeComponent();
image = null;
this.photoChooserTask = new PhotoChooserTask();
this.photoChooserTask.Completed += new EventHandler<PhotoResult>(photoChooserTask_Completed);
}
StorageFile image;
private void choosePic(object sender, RoutedEventArgs e)
{
photoChooserTask.Show();
}
private async void photoChooserTask_Completed(object sender, PhotoResult e)
{
//this is the only line that gives me error
var file = await openPicker.PickSingleFileAsync();
///
if (file != null)
{
image = file;
var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
if (file != null)
{
// Ensure the stream is disposed once the image is loaded
using (IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
MessageBox.Show(e.ChosenPhoto.Length.ToString());
//Code to display the photo on the page in an image control named myImage.
System.Windows.Media.Imaging.BitmapImage bmp = new System.Windows.Media.Imaging.BitmapImage();
bmp.SetSource(e.ChosenPhoto);
myImage.Source = bmp;
}
}
}
Debug.WriteLine("pic done");
}
我想知道如何将图像保存在 Windows Phone 8 的存储文件中?