mkusertrackingmode - 已解决 创建自定义 Apple Maps 用户位置按钮

Question

我正在研究这个我没有找到任何文档，所以我想我会创建一些。在我解决它之后，我就像哦，这比我想象的要容易。

无论如何，我想创建我在苹果地图上看到的 3 个按钮状态。我尝试了一些 setRegion 的东西。经过一些工作后，才意识到苹果打算如何使用它。所以我想我会在这里记录下来。

Answer 1

    func locationButtonWasPressed() {        
        switch self.coreMapView.userTrackingMode {
        case .none:
            self.coreMapView.userTrackingMode = .follow
        case .follow:
            self.coreMapView.userTrackingMode = .followWithHeading
        case .followWithHeading:
            self.coreMapView.userTrackingMode = .none
        @unknown default:
            print("userTrackingMode undefined")
        }
    }

    func mapView(_ mapView: MKMapView, didChange mode: MKUserTrackingMode, animated: Bool) {        
        switch mode {
        case .none:
            let tintedImage = #imageLiteral(resourceName: "nearby").withRenderingMode(.alwaysTemplate)
            locationButton.image = tintedImage
        case .follow:
            let tintedImage = #imageLiteral(resourceName: "nearby-selected").withRenderingMode(.alwaysTemplate)
            locationButton.image = tintedImage
        case .followWithHeading:
            let tintedImage = #imageLiteral(resourceName: "scout").withRenderingMode(.alwaysTemplate)
            locationButton.image = tintedImage
        @unknown default:
            print("userTrackingMode undefined")
        }
    }