我想在自己的类中获取 locationManager ,我可以从不同的其他类中调用它。
我做了什么。创建一个 iPhone 应用程序,并在 ViewController 中添加 locationManger 代码。工作。
现在我创建了一个类Lokation
,我将所有 locationManager 代码转移到这个新类并从 ViewController 调用该代码。结果:函数getLocation
被调用但locationmanager:manager didUpdateToLocation:newLocation fromLocation:oldLocation
未被调用。
输出
2013-07-03 15:44:14.124 Sandbox2[41374:c07] 内部 Lokation::getLocation
缺少什么以及如何整合它?有些东西告诉我“代表”,但我是这个话题的菜鸟。
视图控制器.h
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
@interface ViewController : UIViewController <CLLocationManagerDelegate>
@end
ViewController.m(20130704 更新为工作代码)
#import "ViewController.h"
#import "Lokation.h"
@interface ViewController ()
// 20130704 added property
@property (strong, nonatomic) Lokation *lokation;
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// 20130704 corrected call to getLocation
self.lokation = [[Lokation alloc] init];
self.lokation.delegate = self;
[self.lokation getLocation];
}
@end
定位.h
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
@interface Lokation : NSObject <CLLocationManagerDelegate> {
CLLocationDegrees currentLat;
CLLocationDegrees currentLng;
}
@property (strong, nonatomic) CLLocationManager *locationManager;
@property (nonatomic, strong) CLLocation *currentLoc;
-(void)getLocation;
@end
定位.m
#import "Lokation.h"
@implementation Lokation
@synthesize locationManager = _locationManager;
@synthesize currentLoc = _currentLoc;
-(void)getLocation {
NSLog(@"Inside Lokation::getLocation");
// active location determination
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
// We don't want to be notified of small changes in location,
// preferring to use our last cached results, if any.
self.locationManager.distanceFilter = 50;
[self.locationManager startUpdatingLocation];
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
NSLog(@"Inside Lokation::locationManager");
if (!oldLocation ||
(oldLocation.coordinate.latitude != newLocation.coordinate.latitude &&
oldLocation.coordinate.longitude != newLocation.coordinate.longitude)) {
currentLat = newLocation.coordinate.latitude;
currentLng = newLocation.coordinate.longitude;
} else { // oldLocation
currentLat = oldLocation.coordinate.latitude;
currentLng = oldLocation.coordinate.longitude;
}
self.currentLoc = [[CLLocation alloc] initWithLatitude:currentLat longitude:currentLng];
NSLog(@"currentLat: %f currentLng %f", currentLat, currentLng);
}
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error {
NSLog(@"%@", error);
}
@end