iOS swift : init not being fired?

Question

我有一个简单的类:

import UIKit

class BTManager: NSObject{

    var allowTX = false

    override init(){
        super.init()
        print("Init BTManager")
        NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("connectionChanged:"), name: BLEServiceChangedStatusNotification, object: nil)
        btDiscoverySharedInstance
    }

    func connectionChanged(notification: NSNotification) {
        // Connection status changed. Indicate on GUI.
        let userInfo = notification.userInfo as! [String: Bool]

        dispatch_async(dispatch_get_main_queue(), {
            // Set image based on connection status
            if let isConnected: Bool = userInfo["isConnected"] {
                if isConnected {
                    self.allowTX = true
                    variables.connected = true
                } else {
                    self.allowTX = false
                    variables.connected = false
                }
            }
        });
    }

    func sendSerial(serial: String) {
        // 1
        if !allowTX {
            return
        }

        if let bleService = btDiscoverySharedInstance.bleService {
            bleService.sendSerial(serial)
        }
    }
}

(不要介意 btDiscoverySharedInstance，那是另一个类)

当我调用 var foo = BTManager() 时，我没有在控制台中看到“Init BTManager”。这是为什么？我不知道为什么这行不通...

Answer 1

我从一个结构中调用我的初始化器——显然 swift 不喜欢这样。