//压缩Gif
private async void btyasuo_Click(object sender, RoutedEventArgs e)
{
/*
* //LINQ 的查询
* List<int> listA = new List<int> { 1, 2, 3, 5, 7, 9 };
* List<int> listB = new List<int> { 13, 4, 17, 29, 2 };
* List<int> ResultA = listA.Union(listB).ToList<int>(); //剔除重复项
* List<int> ResultB = listA.Concat(listB).ToList<int>();//保留重复项
* List<int> ResultC = listA.Union(listB).Except(listB).ToList<int>();
* List<int> ResultD = listA.Union(listB).Except(listA).ToList<int>();
*/
//压缩
await Task.Run(async() =>
{
//var rass = RandomAccessStreamReference.CreateFromUri(new Uri(this.baseUri, "/Gif/123.gif"));
var rass = RandomAccessStreamReference.CreateFromUri(new Uri(this.baseUri, "/Gif/234.gif"));
var streamRandom = await rass.OpenReadAsync();
var streamRandomCopy = streamRandom.CloneStream();
var stream = await CompressionHelper.CompressionGif(streamRandom, 400, 300);
await this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
await imageGif.SetSourceAsync(stream);
await gifYaSuo.SetSourceAsync(streamRandomCopy);
});
});
Windows.Networking.BackgroundTransfer.BackgroundDownloader bgd = new Windows.Networking.BackgroundTransfer.BackgroundDownloader();
//测试返回String
var sss = await GetAsyncTaskSample();
//BitmapImage bi = new BitmapImage();
//HttpDownLoadHelper hdlh = new HttpDownLoadHelper();
//var ss = await hdlh.StartDownload(new Uri("http://ww4.sinaimg.cn/bmiddle/636b6f59jw1e2exg8yk5pj.jpg", UriKind.RelativeOrAbsolute));
//await bi.SetSourceAsync(ss);
//ceshiImage.Source = bi;
hdlch = new HttpDownLoadContinueHelper();
hdlch.DownLoadChanging += new EventHandler <WinRtHttpHelper.Data.DownLoadChangingEventArgs>(DownLoadChanging);
var ss = await hdlch.StartDownload(new Uri("http://ww4.sinaimg.cn/bmiddle/636b6f59jw1e2exg8yk5pj.jpg", UriKind.RelativeOrAbsolute));
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
hdlch = new HttpDownLoadContinueHelper();
hdlch.DownLoadChanging += new EventHandler <WinRtHttpHelper.Data.DownLoadChangingEventArgs>(DownLoadChanging);
}
