xamarin.ios - 为 Xamarin 绑定(bind) StickNFind 编译失败

Question

我正在尝试为 StickNFind 创建一个绑定(bind)，以便在基于 Xamarin 的项目中使用。

有问题的类是LeDeviceManager，它继承了CBCentralManagerDelegate，这是一个抽象类，UpdateState(m)方法不是其中的一部分的绑定(bind)。

这是这个类的 Obj-C header :

interface LeDeviceManager : NSObject <CBCentralManagerDelegate>

@property (nonatomic,strong) NSMutableArray *devList;
@property (nonatomic)        CBCentralManager *btmgr;
@property (nonatomic,strong) id <LeDeviceManagerDelegate> delegate;

- (id)      initWithSupportedDevices: (NSArray *) devCls delegate: (id <LeDeviceManagerDelegate>) del;
- (void)    startScan;
- (void)    stopScan;

@end

这是我在 Objective Sharpie 的大力协助下提出的绑定(bind):

    [Model, BaseType (typeof(CBCentralManagerDelegate))]
    public partial interface LeDeviceManager
    {
        [Export ("devList", ArgumentSemantic.Retain)]
        NSMutableArray DevList { get; set; }

        [Export ("btmgr")]
        CBCentralManager Btmgr { get; set; }

        [Export ("delegate", ArgumentSemantic.Retain)]
        LeDeviceManagerDelegate Delegate { get; set; }

        [Export ("initWithSupportedDevices:delegate:")]
        IntPtr Constructor (NSObject[] devCls, LeDeviceManagerDelegate del);

        [Export ("startScan")]
        void StartScan ();

        [Export ("stopScan")]
        void StopScan ();

        [Export ("UpdatedState")] 
        [New] // Added as suggested by another SO post, also tried [Abstract]
        void UpdatedState(CBCentralManager mgr);
    }

我得到这个错误: 错误 CS0533:StickNFind.LeDeviceManager.UpdatedState(MonoTouch.CoreBluetooth.CBCentralManager)' 隐藏了继承的抽象成员MonoTouch.CoreBluetooth.CBCentralManagerDelegate.UpdatedState(MonoTouch.CoreBluetooth.CBCentralManager)' (CS0533) (SNF_Binding)

我该如何解决这个问题:

Answer 1

你好，你能试试这个吗？

[Protocol] // Added Protocol attribute
[Model]
[BaseType (typeof(NSObject))] //Changed BaseType to NSObject
public partial interface LeDeviceManager : ICBCentralManagerDelegate
{
    [Export ("devList", ArgumentSemantic.Retain)]
    NSMutableArray DevList { get; set; }

    [Export ("btmgr")]
    CBCentralManager Btmgr { get; set; }

    [Export ("delegate", ArgumentSemantic.Retain)]
    LeDeviceManagerDelegate Delegate { get; set; }

    [Export ("initWithSupportedDevices:delegate:")]
    IntPtr Constructor (NSObject[] devCls, LeDeviceManagerDelegate del);

    [Export ("startScan")]
    void StartScan ();

    [Export ("stopScan")]
    void StopScan ();

    [Export ("updatedState")] [New] // Notice I changed UpdatedState to updatedState lowercase u
    void UpdatedState(CBCentralManager mgr);
}

我强烈推荐阅读 this doc 的绑定(bind)协议(protocol)部分