如何在xamarin android中扩展应用程序类

Question

[Application]
public class MainApp : Application
{
public MainApp(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
{
}

public override void OnCreate()
{
    base.OnCreate();
    //app init ...
}
}

/library/frameworks/mono.framework/external/xbuild/xamarin/android/xamarin.android.common.targets：错误：执行任务生成器时出错JavaStubs：应用程序不能同时具有[Application]属性和[assembly:Application]属性的类型。（MyApp.Droid）

如果I application，那么它会编译，但会抛出以下运行时错误

这是我的清单文件

Answer 1

在AssemblyInfo.cs中

注释掉

     #if DEBUG
    [Application(Debuggable=true)]
    #else
    [Application(Debuggable = false)]
    #endif

并将其移动到应用程序的顶部

#if DEBUG
[Application(Debuggable=true)]
#else
[Application(Debuggable = false)]
#endif
public class MainApp : Application
{
public MainApp(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
{
}

public override void OnCreate()
{
    base.OnCreate();
    //app init ...
}
}