Xamarin MediaPlugin 和不同的 Android 版本

Question

我对 Media Plugin 有疑问。如果编译目标是 Android 6.0，它在我的 V.5.0.1 设备上的调试模式下工作正常。问题是，当我在发布模式下编译时，我收到此错误：

> Java.Interop.Tools.Diagnostics.XamarinAndroidException: error XA2006: Could not resolve reference to 'Android.Views.KeyboardShortcutGroup' (defined in assembly 'Xamarin.Android.Support.v7.AppCompat, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null') with scope 'Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065'. When the scope is different from the defining assembly, it usually means that the type is forwarded. ---> Mono.Cecil.ResolutionException: Failed to resolve Android.Views.KeyboardShortcutGroup
   in Mono.Linker.Steps.MarkStep.MarkType(TypeReference reference)
   in MonoDroid.Tuner.MonoDroidMarkStep.MarkType(TypeReference reference)
   in Mono.Linker.Steps.MarkStep.MarkGenericArguments(IGenericInstance instance)
   in Mono.Linker.Steps.MarkStep.GetOriginalType(TypeReference type)
   in Mono.Linker.Steps.MarkStep.MarkType(TypeReference reference)
   in MonoDroid.Tuner.MonoDroidMarkStep.MarkType(TypeReference reference)
   in Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
   in Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
   in Mono.Linker.Steps.MarkStep.ProcessQueue()
   in Mono.Linker.Steps.MarkStep.Process()
   in Mono.Linker.Steps.MarkStep.Process(LinkContext context)
   in MonoDroid.Tuner.MonoDroidMarkStep.Process(LinkContext context)
   in Mono.Linker.Pipeline.Process(LinkContext context)
   in MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
   in Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)

我如果我将编译版本更新为 Android 7 (API 24)，问题就解决了，但在此之后我的操作按钮无法正常工作.当我点击按钮打开相机时，我收到此错误：

Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference

我能做什么？谢谢！

Answer 1

我想我找到了解决办法：我打开了 AndroidManifest.xml 文件并删除了 android 目标版本属性.

现在我只有：

Android编译版本：7.1 Android 最低版本：4.1

Xamarin MediaPlugin 和不同的 Android 版本

Xamarin MediaPlugin and different Android version

c#

prism

xamarin.android

xamarin

xamarin.forms