我是编码新手,我被阻止面对这个问题。我尝试创建一个循环来对我的表“餐厅”中的所有数据进行地理编码,并将它们显示在地图视图上,但是当我启动我的应用程序时,只显示最后一个数据。如何在地图上显示我的所有列表?非常感谢您的帮助
让 geoCoder = CLGeocoder() var i = 0
while i < restaurants.count-1 {
i += 1
geoCoder.geocodeAddressString(restaurants[i].location, completionHandler: {
placemarks, error in
if error != nil {
print(error!)
return
}
if let placemarks = placemarks {
//Get the first placemarks
let placemark = placemarks[0]
//Add annotation
let annotation = MKPointAnnotation()
annotation.title = self.restaurants[i].name
annotation.subtitle = self.restaurants[i].type
if let location = placemark.location { annotation.coordinate = location.coordinate
self.mapView.showAnnotations([annotation], animated: true)
self.mapView.selectAnnotation(annotation, animated: true)
//set the zoom level
let region = MKCoordinateRegionMakeWithDistance(annotation.coordinate, 25000, 25000)
self.mapView.setRegion(region, animated: false)
}
}
}
)
}