Question

我从socket

获取数据

我把它存放在对象中我使用NSNotificationCenter。是否有另一种方法可以将这些数据从套接字类直接传递给控制器？

Answer 1

您必须在故事板中为segue指定一个标识符。（例如 vs_segue ）

 override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){....}

调用从当前UIViewController调用的所有segue。因此标识符用于区分不同的segue

然后使用此代码：

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if segue.identifier == "vs_segue" {
    var nextScene =  segue.destinationViewController as! VehicleDetailsTableViewController

    // Pass the selected object to the new view controller.
        nextScene.currentObjectInNextScreen = selectedObjectWhichYouHave
  }
}

在var nextScene之后放置一个断点，看看是否在点击/更改ViewController时触发了它。如果不是，那么故事板中提供的标识符名称必须与此处给出的标识符不同。

由于

快乐编码。

Answer 2

创建ResponseDelegate协议

protocol ResponseDelegate {
    func didReceiveResponse(data:AnyObject?)
}

在套接字类中引用您的委托

class SocketClass {
    var responseDelegate:ResponseDelegate //This should be implemented and referred to your ViewController

    func getCurrentAmount() {
        [socket on:@"currentAmount" callback:^(NSArray* data, SocketAckEmitter* ack) {
           responseDelegate.didReceiveResponse(data)
        }
    }
 }

在ViewController

中

//Set your delegate here
socketClassObject.responseDelegate = self

func didReceiveResponse(data:AnyObject) {
       println("Recieved data:\(data)")
}

使用 NSNotificationsCentre

在ViewController中

//Subscribe/Listen for the events
NSNotificationCenter.defaultCenter().addObserver(self, selector: "didReceiveResponse:", name:"CurrentAmountNotification", object: nil)

func didReceiveResponse(notification: NSNotification) {
       println("Recieved data:\(notification.userInfo)")
}

在你的SocketClass中

  class SocketClass {

    func getCurrentAmount() {
        [socket on:@"currentAmount" callback:^(NSArray* data, SocketAckEmitter* ack) {
           NSNotificationCenter.defaultCenter().postNotificationName("CurrentAmountNotification", object: nil, userInfo:data)
        }
    }
 }

swift，将数据从类传递给viewController

2 个答案: