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Version 4.12.2 Improved ImageLoader/TileImageLoader

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This commit is contained in:
ClemensF 2019-07-13 08:49:49 +02:00
parent 25bdf3050b
commit 4a7e384152
4 changed files with 54 additions and 57 deletions
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16
MapControl/UWP/TileImageLoader.UWP.cs
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@ -36,17 +36,19 @@ namespace MapControl
if (cacheBuffer == null || cacheItem.Expiration < DateTime.UtcNow)
{
using (var stream = await ImageLoader.LoadImageStreamAsync(uri).ConfigureAwait(false))
{
if (stream != null) // download succeeded
{
cacheBuffer = null; // discard cached image
var response = await ImageLoader.GetHttpResponseAsync(uri, false).ConfigureAwait(false);
if (stream.Length > 0) // tile image available
if (response != null) // download succeeded
{
cacheBuffer = null; // discard cached image
if (response.Stream != null) // tile image available
{
using (var stream = response.Stream)
{
await SetTileImageAsync(tile, () => ImageLoader.LoadImageAsync(stream)).ConfigureAwait(false);
await Cache.SetAsync(cacheKey, stream.ToArray().AsBuffer(), GetExpiration(stream.MaxAge)).ConfigureAwait(false);
await Cache.SetAsync(cacheKey, stream.ToArray().AsBuffer(), GetExpiration(response.MaxAge)).ConfigureAwait(false);
}
}
}