/// <summary>
/// Function to get BitmapImage from RuntimeImage
/// </summary>
/// <param name="rtImage">Runtime Image</param>
/// <returns>Bitmap Image</returns>
private async Task <BitmapImage> GetImageAsync(RuntimeImage rtImage)
{
if (rtImage != null)
{
try
{
if (rtImage.LoadStatus != Esri.ArcGISRuntime.LoadStatus.Loaded)
{
await rtImage.LoadAsync();
}
var stream = await rtImage.GetEncodedBufferAsync();
var image = new BitmapImage();
image.BeginInit();
stream.Seek(0, SeekOrigin.Begin);
image.StreamSource = stream;
image.CacheOption = BitmapCacheOption.OnLoad;
image.EndInit();
return(image);
}
catch
{
return(null);
}
}
return(null);
}
/// <summary>
/// Create map pin based on platform
/// </summary>
private async Task <PictureMarkerSymbol> CreateMapPin(string imageName)
{
try
{
Assembly assembly = typeof(StartPage).GetTypeInfo().Assembly;
string imagePath = null;
switch (Device.RuntimePlatform)
{
case Device.iOS:
imagePath = "Esri.ArcGISRuntime.OpenSourceApps.MapsApp.iOS.Images." + imageName;
break;
case Device.Android:
imagePath = "Esri.ArcGISRuntime.OpenSourceApps.MapsApp.Android.Images." + imageName;
break;
case Device.UWP:
imagePath = "Esri.ArcGISRuntime.OpenSourceApps.MapsApp.UWP.Images." + imageName;
break;
}
using (Stream stream = assembly.GetManifestResourceStream(imagePath))
{
long length = stream.Length;
var imageData = new byte[length];
stream.Read(imageData, 0, (int)length);
if (imageData != null)
{
var rtImage = new RuntimeImage(imageData);
// Image must be loaded to ensure dimensions will be available
await rtImage.LoadAsync();
// OffsetY adjustment is specific to the pin marker symbol, to make sure it is anchored at the pin point, rather than center
return(new PictureMarkerSymbol(rtImage)
{
OffsetY = rtImage.Height * PinImageScaleFactor / 2, Height = rtImage.Height * PinImageScaleFactor, Width = rtImage.Width * PinImageScaleFactor
});
}
return(null);
}
}
catch (Exception ex)
{
// Display error message
await DisplayAlert("Error", ex.ToString(), "OK");
return(null);
}
}
/// <summary>
/// Loads the symbol images and creates symbols, applying scale factor and offsets
/// </summary>
private async Task ConfigureImages()
{
var originImage = new RuntimeImage(new Uri("pack://application:,,,/MapsApp;component/Images/Depart.png"));
var destinationImage = new RuntimeImage(new Uri("pack://application:,,,/MapsApp;component/Images/Stop.png"));
// Images must be loaded to ensure dimensions will be available
await Task.WhenAll(originImage.LoadAsync(), destinationImage.LoadAsync());
// OffsetY adjustment is specific to the pin marker symbol, to make sure it is anchored at the pin point, rather than center.
_originPinSymbol = new PictureMarkerSymbol(originImage)
{
OffsetY = originImage.Height * PinScaleFactor / 2, Height = originImage.Height * PinScaleFactor, Width = originImage.Width * PinScaleFactor
};
_mapPinSymbol = new PictureMarkerSymbol(originImage)
{
OffsetY = originImage.Height * PinScaleFactor / 2, Height = originImage.Height * PinScaleFactor, Width = originImage.Width * PinScaleFactor
};
_destinationPinSymbol = new PictureMarkerSymbol(destinationImage)
{
OffsetY = destinationImage.Height * PinScaleFactor / 2, Height = destinationImage.Height * PinScaleFactor, Width = destinationImage.Width * PinScaleFactor
};
}
