在Swift游乐场中使用MapKit显示地图以快速查看？

Question

很高兴看到swift-playground的标签-很高兴看到这种情况继续下去。

我一直在摆弄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预览我的作品。我还没有弄清楚语法，所以我想问问是否有人在游乐场环境中探索过这一点。我在想，我需要一些代码来将它建立为视图控制器。

import UIKit
import MapKit

// Sample UIView code which works great in the playground.
//var myView:UIView = UIView();
//myView.frame = CGRectMake(0, 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;

我想我只是遗漏了一些简单的东西，让mapView自己初始化等等。我喜欢用于修补的解释游乐场区域，只需要弄清楚它是否可以实现mao功能，而不是仅仅在Xcode中编写.swift文件和环境并变得更加正式。

Answer 1

对于OS X上的XCode7.1和Swift2.1，我打开了时间线并执行了以下操作：

import 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, 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 )

PlaygroundPage.current.liveView = mapView
PlaygroundPage.current.needsIndefiniteExecution = true

Answer 2

试试这个：

import UIKit
import MapKit
import XCPlayground // Required for XCPShowView

let frame = CGRect(x: 0, y: 0, width: 150, height: 150)
let mapView = MKMapView(frame: frame)
mapView.region.center.latitude = 37.3347606
mapView.region.center.longitude = -122.0548883
mapView.region.span.latitudeDelta = 0.00725
mapView.region.span.longitudeDelta = 0.00725

XCPShowView("mapview", mapView)

Answer 3

我在Swift游乐场应用程序中尝试了一下，我只做了一些修改，并添加了一行代码。我的swift游乐场应用使用的是Swift 3.1。我希望我可以上传一段视频，在这个地图视图中，我可以放大和缩小，还可以在地图中移动。https://i.stack.imgur.com/XVqPg.jpg

import UIKit
import PlaygroundSupport
import MapKit 


var myView:UIView = UIView()
myView.frame = CGRect(origin: CGPoint (), size: CGSize(width: 320, height: 568))


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

myview.addSubview(mapView)


PlaygroundPage.current.liveView = mapView
PlaygroundPage.current.needsIndefiniteExecution = true