protected override void OnElementChanged(ElementChangedEventArgs<Image> e)
{
base.OnElementChanged(e);
var targetImageView = this.Control;
Bitmap image = null;
var networkStatus = Reachability.InternetConnectionStatus();
var isReachable = networkStatus != NetworkStatus.NotReachable;
if (isReachable)
{
image = GetImageFromWeb(WebImage.ImageUrl);
}
else
{
if (!string.IsNullOrEmpty(WebImage.DefaultImage))
{
var handler = new FileImageSourceHandler();
image = handler.LoadImageAsync(ImageSource.FromFile(WebImage.DefaultImage), this.Context).Result;
}
}
targetImageView.SetImageBitmap(image);
}
/// <summary>
/// Returns the proper <see cref="IImageSourceHandler"/> based on the type of <see cref="ImageSource"/> provided.
/// </summary>
/// <param name="source">The <see cref="ImageSource"/> to get the handler for.</param>
/// <returns>The needed handler.</returns>
private static IImageSourceHandler GetHandler(ImageSource source)
{
IImageSourceHandler returnValue = null;
if (source is UriImageSource) {
returnValue = new ImageLoaderSourceHandler ();
} else if (source is FileImageSource) {
returnValue = new FileImageSourceHandler ();
} else if (source is StreamImageSource) {
returnValue = new StreamImagesourceHandler ();
}
return returnValue;
}
public static IImageSourceHandler GetHandler (this ImageSource source)
{
//Image source handler to return
IImageSourceHandler returnValue = null;
//check the specific source type and return the correct image source handler
if (source is UriImageSource)
{
returnValue = new ImageLoaderSourceHandler();
}
else if (source is FileImageSource)
{
returnValue = new FileImageSourceHandler();
}
else if (source is StreamImageSource)
{
returnValue = new StreamImagesourceHandler();
}
return returnValue;
}