Swift协议与Objective-C ViewController类交互

Question

我试图使用协议从我的视图控制器类的swift类中触发一个函数。

@objc protocol KestrelDeviceConnectDelegate: AnyObject {    
    func readingIsOver()    
}

class KestrelDeviceConnect: NSObject {    

    weak var delegate: KestrelDeviceConnectDelegate?

    func timerAction() {    
        timerCounter += 1
        if(timerCounter >= 20){
            progressHUD.hide()
            timerCounter = 0
            timer.invalidate()
            self.delegate?.readingIsOver()

            //present kestrel alert
        }
    }
}

在视图控制器类viewdidload

KestrelDeviceConnect *bluetoothManager = [[KestrelDeviceConnect alloc]init];
bluetoothManager.delegate = self;

我想从我的快捷类中调用的功能

- (void)readingIsOver {
    [[self logConditionsButton] setHidden:NO];
}

Answer 1

您需要通过将bluetoothManager设置为实例变量

来保持强有力的引用

KestrelDeviceConnect *bluetoothManager;

---

bluetoothManager = [[KestrelDeviceConnect alloc]init];