我的应用有两个标签。在第一个选项卡上,基于吸引力创建了一组选项卡注释。当您单击注释视图时,它将转到第二个选项卡,该选项卡是该景点的详细视图控制器。我想知道如何将吸引力的位置传递给detailVC,这样我就可以将引脚放在同一个地址。以下是我到目前为止的情况,并且存在一些不一致之处,因为详细信息vc上显示的地址不等于景点的地址。
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)
}
}
})
}
这是搜索并添加引脚注释。
然后我尝试发送下面的吸引力位置
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var attractionsDetailViewController:AttractionsDetailViewController = segue.destinationViewController as! AttractionsDetailViewController
attractionsDetailViewController.attractionLocation = indicatedMapItem;
}
然后我的Detail ViewController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)
})
}
答案 0 :(得分:1)
您可以存储通常不推荐的全局变量,也可以通过segue传递,这是推荐的。不能再次反转地理编码可能会更好,因为反向地理编码并不总是找到位置的最准确方法...
答案 1 :(得分:0)
如果你在detailsVC中制作吸引力属性,就像这样......
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。 看到attractionLocation属性将是一个CLLocation,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,我没有发现CLGeocoder在反向地理编码方面是一致的。所以至少这样你可以确定两个屏幕之间的地址是一致的。