我正在尝试打开我的索尼ST23i(安卓4.0.3-API15)上的应用程序。TargetFrameworkVersion) for FormsViewGroup.dll (v7.0) is greater than the $(TargetFrameworkVersion) for your project (v6.0Xamarin.Forms.Platform.Android.dll (v7.0) is greater than the $(TargetFrameworkVersion) for your project (v6.