MapBox Swift 3 api

Posted 2023-02-24

【中文标题】MapBox Swift 3 api

【英文标题】：MapBox swift 3 api

【发布时间】：2016-09-27 06:22:43

【问题描述】：

我使用 MapBox api swift 2.3 并阅读 geojson。但是swift 3 dont work之后就开始升级了。

Swift 2.3 示例；它的工作

 for location in locations 
nate2D(latitude: location[1].doubleValue, longitude: location[0].doubleValue)

coordinates.append(coordinate)

Swift 3.0 不工作

if let feature = feature as? NSDictionary 
    if let geometry = feature["geometry"] as? NSDictionary 
        if geometry["type"] as? String == "Polygon" 
            var coordinates: [CLLocationCoordinate2D] = []
            if let locations = geometry["coordinates"] as? NSArray 
                for location in locations 
                    for i in (0 ..< (location as AnyObject).count)
                    
                        let coordinate = CLLocationCoordinate2D(latitude: ???, longitude: ???)
                        coordinates.append(coordinate)
                    
                
            

            let shape = MGLPolygon(coordinates: &coordinates, count: UInt(coordinates.count))

            DispatchQueue.main.async(execute: 
                [unowned self] in
                self.mapView.addAnnotation(shape)
            )
        
    

enter image description here

【问题讨论】：

请告诉我们您的坐标回复。

CLLocationCoordinate2DMake(location[1].doubleValue, location[0].doubleValue)（示例（41、28））

添加终端截图

我要告诉你的是打印几何字典或位置数组的响应/输出。

怎么写格式""让坐标=CLLocationCoordinate2D(纬度:???,经度:???)坐标.append(坐标)""

【参考方案1】：

这是正确的答案

       for location in locations 


                                            for i in (0 ..< (location as AnyObject).count)
                                            

                                               let a =  locations[0] as? NSArray

                                                let b = a?[i] as? NSArray
                                                var c = b?[0]
                                                print(c);
                                                 let coordinate = CLLocationCoordinate2D(latitude: b?[1] as! CLLocationDegrees, longitude: b?[0] as! CLLocationDegrees)

                                                coordinates.append(coordinate)