Question

我希望有人可以帮助我。我试图将SIOSocket与Swift项目一起使用。

我正在使用https://github.com/MegaBits/SIOSocket/issues/30上的示例，这似乎有效，但我希望能够将socket声明为var，就像self上的Objective-C项目示例一样3}}。所以我可以在代码中使用else来调用emit。

我假设我不理解Obj-C块和Swift闭包基础知识以及var的使用或者需要将@property SIOSocket *socket; [SIOSocket socketWithHost: @"http://localhost:3000" response: ^(SIOSocket *socket) { self.socket = socket; //I Want to do this in swift __weak typeof(self) weakSelf = self; self.socket.onConnect = ^() { weakSelf.socketIsConnected = YES; [weakSelf mapView: weakSelf.mapView didUpdateUserLocation: weakSelf.mapView.userLocation]; }; [self.socket on: @"join" callback: ^(SIOParameterArray *args) { [weakSelf mapView: weakSelf.mapView didUpdateUserLocation: weakSelf.mapView.userLocation]; }]; [self.socket on: @"update" callback: ^(SIOParameterArray *args) { NSString *pinData = [args firstObject];声明为块，但似乎无法理解它。任何帮助都感激不尽。

https://github.com/MegaBits/WorldPin

Objective-C代码：

private func connectToHost() {
    SIOSocket.socketWithHost(host, reconnectAutomatically: true, attemptLimit: 0, withDelay: 1, maximumDelay: 5, timeout: 20, response: {
        socket in

            self.socket = socket // This gives me a use of unresolved identifier self error

            socket.onConnect = {
                println("Connected to \(host)")
                socket.emit("add user", args: [username])
            }

            socket.on("login", callback: {(AnyObject data) -> Void in
                println(["login": data])
                socket.emit("new message", args: [message])
            })

            socket.onDisconnect = {
                println("Disconnected from \(host)")
            }
        })
    }

等等......

Swift Code：

{{1}}

Answer 1

尝试将其更改为：

 SIOSocket.socketWithHost(host, reconnectAutomatically: true, attemptLimit: 0, withDelay: 1, maximumDelay: 5, timeout: 20, response: {(socket: SIOSocket) in

     self.socket = socket // This gives me a use of unresolved identifier self error

    //...
})

我将socket in更改为(socket: SIOSocket) in

Answer 2

您的代码应该有效，请确保您拥有所有正确的类型和可选类型，通过read-write而不是var来确定套接字是let变量。< / p>

尝试使用let response: (SIOSocket) -> Void = {...}。

在方法调用之前定义闭包

在SIOSocket的Swift闭包中使用self

2 个答案: