objective-c 如何在 Swift 中绘制地址，将地址转换为经纬度坐标？
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How can I plot addresses in Swift, converting address to longitude and latitude coordinates?
提问by agf119105
In Objective-C this code works fine to plot an address and it finds the longitude and latitude coordinates:
在 Objective-C 中，这段代码可以很好地绘制地址并找到经度和纬度坐标：
NSString *address = @"1 Infinite Loop, CA, USA";
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
[geocoder geocodeAddressString:address
completionHandler:^(NSArray* placemarks, NSError* error){
// Check for returned placemarks
if (placemarks && placemarks.count > 0) {
CLPlacemark *topResult = [placemarks objectAtIndex:0];
// Create a MLPlacemark and add it to the map view
MKPlacemark *placemark = [[MKPlacemark alloc] initWithPlacemark:topResult];
[self.mapView addAnnotation:placemark];
[placemark release];
}
[geocoder release];
}];
I have been searching for days on how to do this with Swift?! Could anyone point me in the right direction? Could you explain if a user needs an internet connection for this to work. Sorry if these questions sounds a bit basic, but I am quite new to this and learning every day.
我一直在寻找如何用 Swift 做到这一点的日子？！有人能指出我正确的方向吗？你能解释一下用户是否需要互联网连接才能工作。对不起，如果这些问题听起来有点基础，但我对此很陌生并且每天都在学习。
I understand that I have to use this code, but cannot find a way to implement it
我知道我必须使用此代码，但找不到实现它的方法
func geocodeAddressString(_ addressString: String!,
completionHandler completionHandler: CLGeocodeCompletionHandler!)
回答by realtimez
XCode 9 & Swift 3:
XCode 9 和 Swift 3：
import CoreLocation
let address = "1 Infinite Loop, CA, USA"
let geocoder = CLGeocoder()
geocoder.geocodeAddressString(address, completionHandler: {(placemarks, error) -> Void in
if((error) != nil){
print("Error", error)
}
if let placemark = placemarks?.first {
let coordinates:CLLocationCoordinate2D = placemark.location!.coordinate
}
})
回答by kviksilver
Try something like
尝试类似的东西
var address = "1 Infinite Loop, CA, USA"
var geocoder = CLGeocoder()
geocoder.geocodeAddressString(address, {(placemarks: [AnyObject]!, error: NSError!) -> Void in
if let placemark = placemarks?[0] as? CLPlacemark {
self.mapView.addAnnotation(MKPlacemark(placemark: placemark))
}
})
回答by MirekE
var address = "1 Infinite Loop, CA, USA"
var geocoder = CLGeocoder()
geocoder.geocodeAddressString(address) {
if let placemarks = ##代码## {
println(placemarks)
} else {
println()
}
}
