Ios 如何将CLLocation传递给不同的ViewController
我的应用程序有两个标签。在第一个选项卡上,将基于吸引力创建一组选项卡注释。单击注释视图时,它将转到第二个选项卡,该选项卡是景点的详图视图控制器。我想知道我怎样才能把景点的位置传给detailVC,这样我就可以在同一个地址拥有pin。这是我到目前为止所掌握的信息,其中存在一些不一致之处,因为细节vc上显示的地址与景点地址不相等Ios 如何将CLLocation传递给不同的ViewController,ios,swift,mapkit,segue,cllocation,Ios,Swift,Mapkit,Segue,Cllocation,我的应用程序有两个标签。在第一个选项卡上,将基于吸引力创建一组选项卡注释。单击注释视图时,它将转到第二个选项卡,该选项卡是景点的详图视图控制器。我想知道我怎样才能把景点的位置传给detailVC,这样我就可以在同一个地址拥有pin。这是我到目前为止所掌握的信息,其中存在一些不一致之处,因为细节vc上显示的地址与景点地址不相等 func performSearch(input:String) { attractionsMap.removeAnnotations(attractio
func performSearch(input:String) {
attractionsMap.removeAnnotations(attractionsMap.annotations);
matchingItems.removeAll()
let request = MKLocalSearchRequest()
request.naturalLanguageQuery = input
println(input);
request.region = attractionsMap.region;
let search = MKLocalSearch(request: request)
search.startWithCompletionHandler({(response:
MKLocalSearchResponse!,
error: NSError!) in
if error != nil {
println("Error occured in search: \(error.localizedDescription)")
} else if response.mapItems.count == 0 {
println("No matches found")
} else {
println("Matches found")
for item in response.mapItems as! [MKMapItem] {
println("Name = \(item.name)")
println("Phone = \(item.phoneNumber)")
matchingItems.append(item as MKMapItem)
println("Matching items = \(matchingItems.count)")
var placemark = item.placemark;
var subThoroughfare:String = "";
var thoroughfare:String = "";
var locality:String = "";
var postalCode:String = "";
var administrativeArea:String = "";
var country:String = "";
var title = "";
var subtitle = "";
if (placemark.subThoroughfare != nil) {
subThoroughfare = placemark.subThoroughfare;
}
if(placemark.thoroughfare != nil) {
thoroughfare = placemark.thoroughfare;
}
if(placemark.locality != nil) {
locality = placemark.locality;
}
if(placemark.postalCode != nil) {
postalCode = placemark.postalCode;
}
if(placemark.administrativeArea != nil) {
administrativeArea = placemark.administrativeArea;
}
if(placemark.country != nil) {
country = placemark.country;
}
println("viewcontroller placmark data:");
println(locality);
println(postalCode);
println(administrativeArea);
println(country);
title = " \(subThoroughfare) \(thoroughfare) \n \(locality), \(administrativeArea) \n \(postalCode) \(country)";
subtitle = " \(subThoroughfare) \(thoroughfare)";
println(title);
var annotation = MKPointAnnotation()
annotation.coordinate = item.placemark.coordinate
annotation.title = item.name + " " + subtitle;
self.attractionsMap.addAnnotation(annotation)
}
}
})
}
这是搜索和添加pin注释的过程
然后我尝试发送下面的attractionLocation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var attractionsDetailViewController:AttractionsDetailViewController = segue.destinationViewController as! AttractionsDetailViewController
attractionsDetailViewController.attractionLocation = indicatedMapItem;
}
然后我的详细信息ViewController来实现给定的地址:
func getInfo() {
var latitude = attractionLocation.latitude;
var longitude = attractionLocation.longitude;
var latDelta:CLLocationDegrees = 0.000001
var longDelta: CLLocationDegrees = 0.000001
var span: MKCoordinateSpan = MKCoordinateSpanMake(latDelta, longDelta);
var location = CLLocationCoordinate2DMake(latitude, longitude);
var realLocation = CLLocation(latitude: latitude, longitude: longitude);
CLGeocoder().reverseGeocodeLocation(realLocation, completionHandler: { (placemarks, error) -> Void in
var title = ""
var subtitle = ""
var locality = ""
if(error == nil) {
if let placemark = CLPlacemark(placemark: placemarks?[0] as! CLPlacemark) {
var subThoroughfare:String = "";
var thoroughfare:String = "";
var locality:String = "";
var postalCode:String = "";
var administrativeArea:String = "";
var country:String = "";
if (placemark.subThoroughfare != nil) {
subThoroughfare = placemark.subThoroughfare;
}
if(placemark.thoroughfare != nil) {
thoroughfare = placemark.thoroughfare;
}
if(placemark.locality != nil) {
locality = placemark.locality;
}
if(placemark.postalCode != nil) {
postalCode = placemark.postalCode;
}
if(placemark.administrativeArea != nil) {
administrativeArea = placemark.administrativeArea;
}
if(placemark.country != nil) {
country = placemark.country;
}
println("viewcontroller placmark data:");
println(locality);
println(postalCode);
println(administrativeArea);
println(country);
title = " \(subThoroughfare) \(thoroughfare) \n \(locality), \(administrativeArea) \n \(postalCode)\(country)";
subtitle = " \(subThoroughfare) \(thoroughfare)";
println(title);
self.addressLabel.text = title;
}
}
var overallLoc = CLLocationCoordinate2DMake(latitude, longitude);
var region:MKCoordinateRegion = MKCoordinateRegionMake(overallLoc, span);
var annotation = MKPointAnnotation();
annotation.coordinate = location;
annotation.title = subtitle;
self.detailMap.addAnnotation(annotation);
self.detailMap.setRegion(region, animated: true)
})
}
如果您在detailsVC中设置attractionLocation属性,如下所示
var attractionLocation: CLLocation?
var attractionAddress: String?
据我所知,getInfo函数只需要设置地图的区域并添加适当的注释。
由于attractionLocation属性将是CLLocation,因此我们可以访问它的坐标属性。如果您从第一个屏幕通过attractionAddress,则不需要使用CLGeocoder
func getInfo() {
// Create span for the map region
var latDelta:CLLocationDegrees = 0.000001
var longDelta: CLLocationDegrees = 0.000001
var span: MKCoordinateSpan = MKCoordinateSpanMake(latDelta, longDelta);
// Create region for map
var region:MKCoordinateRegion = MKCoordinateRegionMake(attractionLocation!.coordinate, span);
var annotation = MKPointAnnotation();
annotation.coordinate = attractionLocation!.coordinate;
annotation.title = attractionAddress!;
self.detailMap.addAnnotation(annotation);
self.detailMap.setRegion(region, animated: true)
}
在过去,当涉及到反向地理编码时,我没有发现CLGeocoder的一致性。因此,至少通过这种方式,您可以确保两个屏幕之间的地址是一致的 您可以存储一个通常不推荐的全局变量,也可以通过segue传递,这是推荐的。最好不要再反向地理编码,因为反向地理编码并不总是最准确的定位方法 @您是否已将所需坐标传递到第二个选项卡?