c# - Xamarin.Android : The call is ambiguous between the following methods or properties

Question

我收到以下错误:

The call is ambiguous between the following methods or properties: 'Java.Interop.JavaObjectExtensions.JavaCast(Android.Runtime.IJavaObject)' and 'Android.Runtime.Extensions.JavaCast(Android.Runtime.IJavaObject)'

使用此代码:

// Get a pointer to the Java class.
IntPtr jClass = JNIEnv.FindClass("com/companyname/appname/JniClass");

// constructor.
IntPtr defaultConstructor = JNIEnv.GetMethodID(jClass,
                                               "<init>",
                                               "()V");
// new instance of the class.
IntPtr instance = JNIEnv.NewObject(jClass, defaultConstructor);

// Find method.
IntPtr methodID = JNIEnv.GetMethodID(jClass,   "getResult",    "()Ljava/lang/String;");

// Call the method.
IntPtr resultPtr = JNIEnv.CallObjectMethod(instance, methodID);

// Convert the pointer to return value
Java.Lang.Object jObject = new Java.Lang.Object(resultPtr, JniHandleOwnership.TransferLocalRef);
Java.Lang.String result = jObject.JavaCast<Java.Lang.String>(); // Compiler Error

我很好奇为什么编译器认为此代码是错误的。

Answer 1

仅针对那些仍然遇到相同错误的人!

就我而言，我删除了对命名空间的引用

Android.Runtime

可能在您的情况下

Android.Runtime.Extension

可能会帮助某人!