Ios 如何在swift中转换java代码？

我这里的java代码如下所示：

this.mNetworkConnectionManager = new NetworkConnectionManager(new NetworkConnectionManager.OnNetworkListener() {

            @Override
            public void onNetworkPacketSent(String packet) {
                BASPacket bp = new BASPacket(packet);
                bp.setTimestampedPacket(timestampPacket(packet, "sent"));

                mOnBASMessageListener.onBASMessageSent(bp);
            }


        });

self.mNetworkConnectionManager = NetworkConnectionManager(l: { NetworkConnectionManager.OnNetworkListener() 
            func onNetworkPacketSent(packet : String)
            {
                var bp : BASPacket = BASPacket(packet: packet)
                bp.setTimestampedPacket(timestampPacket(packet, sentrec: "sent"));

                mOnBASMessageListener.onBASMessageSent(bp);
            }
        }())

我尝试在swift中转换这些代码，如下所示：

this.mNetworkConnectionManager = new NetworkConnectionManager(new NetworkConnectionManager.OnNetworkListener() {

            @Override
            public void onNetworkPacketSent(String packet) {
                BASPacket bp = new BASPacket(packet);
                bp.setTimestampedPacket(timestampPacket(packet, "sent"));

                mOnBASMessageListener.onBASMessageSent(bp);
            }


        });

self.mNetworkConnectionManager = NetworkConnectionManager(l: { NetworkConnectionManager.OnNetworkListener() 
            func onNetworkPacketSent(packet : String)
            {
                var bp : BASPacket = BASPacket(packet: packet)
                bp.setTimestampedPacket(timestampPacket(packet, sentrec: "sent"));

                mOnBASMessageListener.onBASMessageSent(bp);
            }
        }())

但获取编译错误。“由于信号：分段错误：11，命令失败”

此外，我在swift中有如下NetworkManager类：

public class NetworkConnectionManager
{
    var mOnNetworkListener:OnNetworkListener = OnNetworkListener()

     init(l : OnNetworkListener)
    {
        self.mOnNetworkListener = l

    }
    class OnNetworkListener
    {

    }
}

---

Swift不支持匿名类。如果要重写类中的某个内容，必须在swift中为其创建一个子类

public class NetworkConnectionManager
{
    var mOnNetworkListener:OnNetworkListener = OnNetworkListener()

    init(l : OnNetworkListener)
    {
        self.mOnNetworkListener = l

    }
    class OnNetworkListener
    {
        func onNetworkPacketSent(packet : String)
        {
            //default implementation
        }
    }
}

class MyOnNetworkListener : NetworkConnectionManager.OnNetworkListener
{
    override func onNetworkPacketSent(packet: String) {
        var bp : BASPacket = BASPacket(packet: packet)
        bp.setTimestampedPacket(timestampPacket(packet, sentrec: "sent"));

        mOnBASMessageListener.onBASMessageSent(bp);
    }
}

let mNetworkConnectionManager = MyOnNetworkListener()

如果没有默认实现，可以将其声明为协议

public class NetworkConnectionManager
{
    var mOnNetworkListener:OnNetworkListener

    init(l : OnNetworkListener)
    {
        self.mOnNetworkListener = l
    }
}

protocol OnNetworkListener {
    func onNetworkPacketSent(packet : String)
}

class MyOnNetworkListener : OnNetworkListener
{
    func onNetworkPacketSent(packet: String) {
        var bp : BASPacket = BASPacket(packet: packet)
        bp.setTimestampedPacket(timestampPacket(packet, sentrec: "sent"));

        mOnBASMessageListener.onBASMessageSent(bp);
    }
}

let mNetworkConnectionManager = MyOnNetworkListener()

如果类/协议只包含一个方法，则更快的方法是通过单个闭包

public class NetworkConnectionManager
{
    var mOnNetworkListener : (String) -> ()

    init(l : @escaping (String) -> ())
    {
        self.mOnNetworkListener = l

    }
}

let mNetworkConnectionManager = NetworkConnectionManager { (packet) in
    var bp : BASPacket = BASPacket(packet: packet)
    bp.setTimestampedPacket(timestampPacket(packet, sentrec: "sent"));

    mOnBASMessageListener.onBASMessageSent(bp);
}

---

编译器永远不会崩溃，因此这是一个bug。但NetworkConnectionManager和其他使用的类在您的Swift代码中来自何处？NetworkConnectionManager和其他使用的类在应用程序中也是Swift类。如果您知道转换上述java代码的其他方法，请告诉我。如果您注释掉onNetworkPacketSent函数中的内容，它会编译吗？我遇到了这个分段错误：11每当我试图访问这些匿名内部类中的方法中的局部/方法/实例变量时，或者无论您如何在Swift中调用它们（这就是java中对它们的调用）。我认为这是一个编译器错误。还要更仔细地阅读有关分段错误的日志-它可能会告诉您是哪个声明导致了问题。