/// <summary>
/// 获取Bing图片。
/// </summary>
/// <returns>返回BitmapImage图片</returns>
public async Task <BitmapImage> GetBitmapImageAsync()
{
GenerateBgService bgService = new GenerateBgService();
BingImageData bingImageData = Task.Run(bgService.getBingImageDataAsync).Result;
Image item = bingImageData.images[0];
Windows.Web.Http.HttpClient http = new Windows.Web.Http.HttpClient();
string uri = "https://www.bing.com" + item.url;
IBuffer buffer = await http.GetBufferAsync(new Uri(uri));
BitmapImage img = new BitmapImage();
using (IRandomAccessStream stream = new InMemoryRandomAccessStream())
{
await stream.WriteAsync(buffer);
stream.Seek(0);
await img.SetSourceAsync(stream);
}
// Save the bing image to local folder
SaveImageToLocalFolder(uri);
return(img);
}
/// <summary>
/// 获取Bing每日图片的Json，反序列化为类。
/// </summary>
/// <returns>返回BingImageData类</returns>
public async Task <BingImageData> getBingImageDataAsync()
{
// We can specify the region we want for the Bing Image of the Day.
string strRegion = "en-US";
string strBingImageURL =
string.Format("http://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n={0}&mkt={1}", 1,
strRegion);
string strJSONString = "";
// Use Windows.Web.Http Namespace as System.Net.Http will be deprecated in future versions.
HttpClient httpClient = new HttpClient();
string json = await httpClient.GetStringAsync(new Uri(strBingImageURL));
// strJson Deserialize to Json class
BingImageData bingImageData = JsonConvert.DeserializeObject <BingImageData>(json);
return(bingImageData);
}
