private async void ShareToWeibo()
{
snsSharingBusy = true;
string fileName = "TempShareWeibo";
var stream = await ImageHelper.SaveBitmapToLocal(bitmap, fileName, true);
////var stream = await ImageHelper.BitmapToStream(bitmap);
//var buffer = await bitmap.GetPixelsAsync();
//var arr = buffer.ToArray();
//MemoryStream ms = new MemoryStream(arr);
await WeiboHelper.Share(stream, shareText);
snsSharingBusy = false;
}
