W10 UWP - 将远程图像设置为桌面墙纸/锁屏

Question

我正在尝试在我的W10 UWP应用中将远程图像设置为桌面壁纸/手机锁屏:

string name = "test_image.jpg";
Uri uri = new Uri("http://www.ucl.ac.uk/news/news-articles/1213/muscle-fibres-heart.jpg");

// download image from uri into temp storagefile
var file = await StorageFile.CreateStreamedFileFromUriAsync(name, uri, RandomAccessStreamReference.CreateFromUri(uri));

// file is readonly, copy to a new location to remove restrictions
var file2 = await file.CopyAsync(KnownFolders.PicturesLibrary);

// test -- WORKS!
//var file3 = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/Design/1.jpg"));

// try set lockscreen/wallpaper
if (ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons")) // Phone
    success = await UserProfilePersonalizationSettings.Current.TrySetLockScreenImageAsync(file2);
else // PC
    success = await UserProfilePersonalizationSettings.Current.TrySetWallpaperImageAsync(file2);

file1不起作用,因为它是只读的,所以我将它复制到一个新的位置(图片库)以删除限制 - > file2.

注意:file3有效,所以我不确定发生了什么 - 我假设TrySetWallpaperImageAsync/TrySetLockScreenImageAsync只接受msappx本地文件......

任何人对工作有什么想法？

谢谢.

Answer 1

首先保存远程图像ApplicationData.Current.LocalFolder,然后使用TrySetWallpaperImageAsync/ TrySetLockScreenImageAsync并指向保存的图像,而不是直接引用远程图像应该工作.