Question

最终编辑我几乎重建了所有类（自定义MKAnnotationView，自定义标注视图和另一个支持MKAnnotation协议的自定义类（这是我的注释类）），它只是善良的开始工作并显示标注。我把所有内容都归结为基本要素（即只使用自定义注释视图而不使用自定义标注，然后重新实现自定义标注）在测试项目中更清楚地看到事情，然后工作，我移植了我的结果回到我的实际项目。标注视图显示但不正确（我的自定义detailCalloutAccessoryView被切断，仍在尝试修复）。

当我点击自定义注释视图时，我的MapKit自定义标注视图不希望出现。我的代码出了什么问题？

这是我的“viewForAnnotation”函数...自定义注释视图工作正常，它只是没有出现的标注视图（根本没有）。

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
        if let annotation = annotation as? RentalAnnotation {
            let identifier = "pin"
            var customAnnotationView: CustomAnnotationView

    var customCalloutView = CustomCalloutView()
    customCalloutView.backgroundColor = UIColor.greenColor()
    let widthConstraint = NSLayoutConstraint(item: customCalloutView, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40)
    customCalloutView.addConstraint(widthConstraint)

    let heightConstraint = NSLayoutConstraint(item: customCalloutView, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 20)
    customCalloutView.addConstraint(heightConstraint)

    let image = UIImageView(image: UIImage(named: "bed"))
    image.contentMode = .ScaleAspectFit
    if let dequeuedView = rentalsMapView.dequeueReusableAnnotationViewWithIdentifier(identifier) as? CustomAnnotationView {
        dequeuedView.annotation = annotation
        dequeuedView.label!.text = "$ \(annotation.price)"
        dequeuedView.canShowCallout = true
        dequeuedView.detailCalloutAccessoryView = customCalloutView
        customAnnotationView = dequeuedView
    } else {
        customAnnotationView = CustomAnnotationView(annotation: annotation, reuseIdentifier: identifier)
        customAnnotationView.label?.text = "$ \(annotation.price)"
        customAnnotationView.canShowCallout = true
        customAnnotationView.detailCalloutAccessoryView = customCalloutView
        customAnnotationView.calloutOffset = CGPoint(x: +5, y: 5)

    }
    return customAnnotationView
}
return nil

}

这是我的CustomCalloutView子类（UIView）的代码：

class CustomCalloutView: UIView {

    @IBOutlet weak var calloutPropertyAvailabilityDate: UILabel!
    @IBOutlet weak var calloutPropertyBedroomNumber: UILabel!
    @IBOutlet weak var calloutPropertyBathroomNumber: UILabel!
    var customCalloutView = UIView()

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        customCalloutView = (NSBundle.mainBundle().loadNibNamed("CustomCalloutView", owner: self, options: nil)[0] as? UIView)!
        self.addSubview(customCalloutView)
    }

}

我设计了一个带有XIB文件的自定义标注视图界面，该文件为6个标签和一个按钮。

我做错了什么？我已经尝试了所有的东西......仍然无法让它发挥作用。

编辑 RentalAnnotation代码

class RentalAnnotation: NSObject, MKAnnotation {

    var rentalName: String
    var price: Int
    var latitude: Double
    var longitude: Double
    var coordinate: CLLocationCoordinate2D

    init(rentalName: String, price: Int, latitude: Double, longitude: Double, coordinate: CLLocationCoordinate2D) {
        self.rentalName = rentalName
        self.price = price
        self.latitude = latitude
        self.longitude = longitude
        self.coordinate = coordinate
    }

    var title: String? {
        return rentalName
    }

    var subtitle: String? {
        return ("$\(price)")
    }

    func mapItem() -> MKMapItem {
        let addressDictionary = [String(CNPostalAddressStreetKey): rentalName]
        let placemark = MKPlacemark(coordinate: coordinate, addressDictionary: addressDictionary)
        let mapItem = MKMapItem(placemark: placemark)
        mapItem.name = rentalName
        return mapItem
    }
}

编辑2 didSelectAnnotationView方法的代码

func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
        if ((view.annotation?.isKindOfClass(MKUserLocation)) == true) {
            return
        }

        var customView = (NSBundle.mainBundle().loadNibNamed("CustomCalloutView", owner: self, options: nil))[0] as? CustomCalloutView

//        var calloutFrame = customView?.frame
//        calloutFrame?.origin = CGPointMake(-((calloutFrame?.size.width)!/2) + 15, -((calloutFrame?.size.height)!))
//        customView?.frame = calloutFrame!

        let cpa = view.annotation as? CustomPointAnnotation
//
//        view.addSubview(customView!)

        let spanX = 0.0000000000000001
        let spanY = 0.0000000000000001

        let newRegion = MKCoordinateRegion(center: (cpa?.coordinate)!, span: MKCoordinateSpanMake(spanX, spanY))
        self.rentalsMapView.setRegion(newRegion, animated: true)
    }

Answer 1

尝试在注释中添加... import socket import struct import json import bluetooth device = "10:00:E8:6B:F9:F9" port = 1 btsocket = bluetooth.BluetoothSocket(bluetooth.RFCOMM) print "Attempting to connect to " + device + " Port: " + str(port) + "...", btsocket.connect((device, port)) print "done." while True: try: btbuffer = btsocket.recv(1024) ## 1024 except bluetooth.BluetoothError, b: print "Bluetooth Error: ", b。如果title为title，则不会显示标注。
来自文档：

SWIFT
  var canShowCallout：Bool
  Objective-C的
  @property（非原子）BOOL canShowCallout

如果此属性的值为YES，则标准的标注气泡为   当用户点击选定的注释视图时显示。标注使用   来自关联注释对象的标题和副标题文本。如果   但是，没有标题文本，注释视图被视为   其enabled属性设置为NO。标注也显示任何   存储在leftCalloutAccessoryView和中的自定义标注视图   rightCalloutAccessoryView属性。

自定义标注视图不希望显示

1 个答案: