Xamarin.forms: [Android、PCL] - ImageLoaderSourceHandler：无法检索图像或图像数据无效

描述

• 在 Android 上，使用最新的 Forms 和一个 PCL 项目......一个带有硬编码 ImageSource may超时的 XAML ImageCell 并返回一个错误。

• 与 Shared 或 .NET Standard 解决方案一起使用时似乎可以正常工作

• 仅在模拟中测试

<ImageCell
    ImageSource="https://www.xamstatic.com/dist/images/pages/platform/visual-studio-icon-uHIZMvQl.png"
    Text="{Binding Name}"
    Detail="{Binding Job}">
</ImageCell>

• 链接到完整的输出日志

Image Loading: Error getting stream for https://www.xamstatic.com/dist/images/pages/platform/visual-studio-icon-uHIZMvQl.png: System.Threading.Tasks.TaskCanceledException: A task was canceled.
...
[0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: https://www.xamstatic.com/dist/images/pages/platform/visual-studio-icon-uHIZMvQl.png

重现步骤

1. 使用下面的repo ，加载 PCL 示例
2. 跑
3. 应该看到带有 Visual Studio 图标的 ImageCell 列表
4. 检查输出是否有错误和超时
5. 错误没有发生？ 卸载应用程序并重试。

预期行为

加载所有图像，就像在共享和 .NET Standard 解决方案中一样

实际行为

链接到完整的输出日志

[0:] Image Loading: Error getting stream for https://www.xamstatic.com/dist/images/pages/platform/visual-studio-icon-uHIZMvQl.png: System.Threading.Tasks.TaskCanceledException: A task was canceled.
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00026] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Net.Http.HttpClientHandler+<SendAsync>d__63.MoveNext () [0x00528] in <35658e59c86d40bdbb2ef0bb34b4f0c7>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0001a] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Net.Http.HttpClient+<SendAsyncWorker>d__49.MoveNext () [0x000ca] in <35658e59c86d40bdbb2ef0bb34b4f0c7>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0001a] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at Xamarin.Forms.Forms+AndroidPlatformServices+<GetStreamAsync>d__16.MoveNext () [0x0003e] in D:\agent\_work\2\s\Xamarin.Forms.Platform.Android\Forms.cs:448 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0001a] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in <657aa8fea4454dc898a9e5f379c58734>:0 
  at Xamarin.Forms.UriImageSource+<GetStreamAsyncUnchecked>d__23.MoveNext () [0x00224] in D:\agent\_work\2\s\Xamarin.Forms.Core\UriImageSource.cs:174 
[0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: https://www.xamstatic.com/dist/images/pages/platform/visual-studio-icon-uHIZMvQl.png

基本信息

• 有问题的版本：Xamarin.Forms：2.5.0.91635
• 平台目标框架：
  
  
  
  • Android：8.1.3 -完整版本信息
  
  

复制链接

https://github.com/mattregul/XF_ImageCellIssue