很高兴看到swift-playground的标签 – 喜欢看到这种情况继续下去。
我一直在修补Swift，我想知道MapKit是否可以在操场上使用，这样你就可以使用Quick Look功能，这样我就可以迭代并使用我的工作预览。我还没想出语法，所以我想问一下是否有人在游乐场环境中探讨过这个问题。我想我需要一些代码来建立它作为一个视图控制器。
import UIKit import MapKit // Sample UIView code which works great in the playground. //var myView:UIView = UIView(); //myView.frame = CGRectMake(0,320,560) //myView.backgroundColor = UIColor.blueColor() // Non working map code - no errors but can't figure out what to call or initiate to get the view in the Quick Look side. var mapView = MKMapView(); mapView.region.center.latitude = mapView.userLocation.coordinate.latitude; mapView.region.center.longitude = mapView.userLocation.coordinate.longitude; mapView.region.span.latitudeDelta = 0.00725; mapView.region.span.longitudeDelta = 0.00725;
猜测我只是缺少一些简单的mapView来初始化自己等等。我喜欢解释的游乐场区域进行修补，只需要弄清楚它是否可以执行mao功能，而不是仅仅在Xcode中编写.swift文件和环境并获取更正式。
对于OS X上的XCode7.1和Swift2.1，我打开了时间轴并执行了以下操作：
原文链接：https://www.f2er.com/swift/320284.htmlimport MapKit import XCPlayground let delta = 5.0 let frame = CGRect( x:0,y:0,width:200,height:200 ) let mapView = MKMapView( frame: frame ) var region = MKCoordinateRegion() region.center.latitude = 31.0 region.center.longitude = -110.0 region.span.latitudeDelta = delta region.span.longitudeDelta = delta mapView.setRegion( region,animated: true ) XCPlaygroundPage.currentPage.liveView = mapView XCPlaygroundPage.currentPage.needsIndefiniteExecution = true
Xcode 9.x，Swift 4.1更新：
导入PlaygroundSupport
导入MapKit
let delta = 5.0 let frame = CGRect( x:0,animated: true ) PlaygroundPage.current.liveView = mapView PlaygroundPage.current.needsIndefiniteExecution = true
