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需求：获取经纬度。 方案：我自定义了一个类模块CLLocationModule.swift 备注以下代码里 let IS_IOS8 = (UIDevice.currentDevice().systemVersion as NSString).doubleValue >= 8.0 最开始的代码 import UIKit import CoreLocation class CLLocationModule: NSObject ,CLLocationManagerDelegate{ var latitude:Double? var longitude:Double? var city:NSString?
func GetLatitudeLongitudeAndCity(){ if CLLocationManager.locationServicesEnabled() == false { print("此设备不能定位") return } var locManager = CLLocationManager() locManager.delegate = self locManager.desiredAccuracy = kCLLocationAccuracyBest locManager.distanceFilter = 1000.0 //设置定位权限仅ios8有意义 if IS_IOS8 { locManager.requestWhenInUseAuthorization()// 前台定位 locManager.requestAlwaysAuthorization() } locManager.startUpdatingLocation() }
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { for location in locations { print("纬度：%g",location.coordinate.latitude); print("经度：%g",location.coordinate.longitude); latitude = location.coordinate.latitude longitude = location.coordinate.longitude self.saveLatitude(latitude!.description) self.saveLongitude(longitude!.description) let geocoder: CLGeocoder = CLGeocoder() geocoder.reverseGeocodeLocation(location) { (placemarks, error) in if error != nil { print("reverse geodcode fail: \(error!.localizedDescription)") return } let pm = placemarks! as [CLPlacemark] if (pm.count > 0){ for placemark :CLPlacemark in placemarks! { let placemarkDict = placemark.addressDictionary let placemarkStr = placemarkDict!["State"] self.city = placemarkStr?.substringToIndex((placemarkStr?.length)!-1) self.saveCity(self.city!) } }else{ print("No Placemarks!") } } } manager.stopUpdatingLocation() }
func locationManager(manager:CLLocationManager, didFailWithError error:NSError) { print("locationManager error"); }
func saveLatitude(latitude: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(latitude, forKey: "latitude") defaults.synchronize() }
func readLatitude() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let latitude = defaults.objectForKey("latitude") as! NSString return latitude; }
func saveLongitude(longitude: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(longitude, forKey: "longitude") defaults.synchronize() }
func readLongitude() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let longitude = defaults.objectForKey("longitude") as! NSString return longitude; }
func saveCity(city: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(city, forKey: "city") defaults.synchronize() }
func readCity() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let city = defaults.objectForKey("city") as! NSString return city; } }
外部调用是： CLLocationModule().GetLatitudeLongitudeAndCity() 结果：定位框一闪而过 （允许 不允许那个弹出框） 导致不走代理方法didUpdateLocations 最后查阅网页 知道
（a）locManager没定义为全局变量 （b）自定义的CLLocationModule.swift这个类 由于ARC的缘故 自动释放了 针对以上（a）问题的解决办法为自定义类CLLocationModule.swift中将var locManager = CLLocationManager() 改为全局变量 var locManager: CLLocationManager! locManager = CLLocationManager() 针对以上（b）问题的解决方案有两种 (1)外部调用时改为：(改为强引用) var aCLLocationModule = CLLocationModule() self.aCLLocationModule.GetLatitudeLongitudeAndCity() (2)自定义的类CLLocationModule.swift改为单例 //单例 private static let aSharedInstance: CLLocationModule = CLLocationModule() private override init() {} class func sharedInstance() -> CLLocationModule { return aSharedInstance } 外部调用时改为： CLLocationModule.sharedInstance().GetLatitudeLongitudeAndCity() 成功的代码附上两份 (1)单例 import UIKit import CoreLocation class CLLocationModule: NSObject ,CLLocationManagerDelegate{ //单例 private static let aSharedInstance: CLLocationModule = CLLocationModule() private override init() {} class func sharedInstance() -> CLLocationModule { return aSharedInstance }
var locManager: CLLocationManager! var latitude:Double? var longitude:Double? var city:NSString?
func GetLatitudeLongitudeAndCity(){ if CLLocationManager.locationServicesEnabled() == false { print("此设备不能定位") return } locManager = CLLocationManager() locManager.delegate = self locManager.desiredAccuracy = kCLLocationAccuracyBest locManager.distanceFilter = 1000.0 //设置定位权限仅ios8有意义 if IS_IOS8 { locManager.requestWhenInUseAuthorization()// 前台定位 locManager.requestAlwaysAuthorization() } locManager.startUpdatingLocation() }
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { for location in locations { print("纬度：%g",location.coordinate.latitude); print("经度：%g",location.coordinate.longitude); latitude = location.coordinate.latitude longitude = location.coordinate.longitude self.saveLatitude(latitude!.description) self.saveLongitude(longitude!.description) let geocoder: CLGeocoder = CLGeocoder() geocoder.reverseGeocodeLocation(location) { (placemarks, error) in if error != nil { print("reverse geodcode fail: \(error!.localizedDescription)") return } let pm = placemarks! as [CLPlacemark] if (pm.count > 0){ for placemark :CLPlacemark in placemarks! { let placemarkDict = placemark.addressDictionary let placemarkStr = placemarkDict!["State"] self.city = placemarkStr?.substringToIndex((placemarkStr?.length)!-1) self.saveCity(self.city!) } }else{ print("No Placemarks!") } } } manager.stopUpdatingLocation() }
func locationManager(manager:CLLocationManager, didFailWithError error:NSError) { print("locationManager error"); }
func saveLatitude(latitude: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(latitude, forKey: "latitude") defaults.synchronize() }
func readLatitude() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let latitude = defaults.objectForKey("latitude") as! NSString return latitude; }
func saveLongitude(longitude: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(longitude, forKey: "longitude") defaults.synchronize() }
func readLongitude() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let longitude = defaults.objectForKey("longitude") as! NSString return longitude; }
func saveCity(city: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(city, forKey: "city") defaults.synchronize() }
func readCity() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let city = defaults.objectForKey("city") as! NSString return city; } } 外部调用： CLLocationModule.sharedInstance().GetLatitudeLongitudeAndCity() (2)强引用 import UIKit import CoreLocation class CLLocationModule: NSObject ,CLLocationManagerDelegate{ var locManager: CLLocationManager! var latitude:Double? var longitude:Double? var city:NSString?
func GetLatitudeLongitudeAndCity(){ if CLLocationManager.locationServicesEnabled() == false { print("此设备不能定位") return } locManager = CLLocationManager() locManager.delegate = self locManager.desiredAccuracy = kCLLocationAccuracyBest locManager.distanceFilter = 1000.0 //设置定位权限仅ios8有意义 if IS_IOS8 { locManager.requestWhenInUseAuthorization()// 前台定位 locManager.requestAlwaysAuthorization() } locManager.startUpdatingLocation() }
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { for location in locations { print("纬度：%g",location.coordinate.latitude); print("经度：%g",location.coordinate.longitude); latitude = location.coordinate.latitude longitude = location.coordinate.longitude self.saveLatitude(latitude!.description) self.saveLongitude(longitude!.description) let geocoder: CLGeocoder = CLGeocoder() geocoder.reverseGeocodeLocation(location) { (placemarks, error) in if error != nil { print("reverse geodcode fail: \(error!.localizedDescription)") return } let pm = placemarks! as [CLPlacemark] if (pm.count > 0){ for placemark :CLPlacemark in placemarks! { let placemarkDict = placemark.addressDictionary let placemarkStr = placemarkDict!["State"] self.city = placemarkStr?.substringToIndex((placemarkStr?.length)!-1) self.saveCity(self.city!) } }else{ print("No Placemarks!") } } } manager.stopUpdatingLocation() }
func locationManager(manager:CLLocationManager, didFailWithError error:NSError) { print("locationManager error"); }
func saveLatitude(latitude: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(latitude, forKey: "latitude") defaults.synchronize() }
func readLatitude() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let latitude = defaults.objectForKey("latitude") as! NSString return latitude; }
func saveLongitude(longitude: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(longitude, forKey: "longitude") defaults.synchronize() }
func readLongitude() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let longitude = defaults.objectForKey("longitude") as! NSString return longitude; }
func saveCity(city: NSString) { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() defaults.setObject(city, forKey: "city") defaults.synchronize() }
func readCity() -> NSString { let defaults: NSUserDefaults = NSUserDefaults.standardUserDefaults() let city = defaults.objectForKey("city") as! NSString return city; } } 外部调用： var aCLLocationModule = CLLocationModule() self.aCLLocationModule.GetLatitudeLongitudeAndCity()
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