0

私はObjective-Cの世界では初めてです。iOS 6.1 のシミュレーターで簡単な位置情報アプリを開発してみました。しかし、場所をシミュレートしようとすると、まったく機能しません。イベントを受け取れませんが、delegateオブジェクトは正しく登録されてPositionProviderいますstartUpdate。

なにが問題ですか？

私は次のコードを持っています:

ポジションプロバイダー

#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
#import "LocationListener.h"

@interface PositionProvider : NSObject
{
    @public
    LocationListener<CLLocationManagerDelegate> *listener;
    @protected
    CLLocationManager *manager;
}

#pragma mark -
#pragma mark on/off

-(void) startUpdate;

-(void) stopUpdate;

@end

実装

    @implementation PositionProvider
{
@private
    CLLocation *lastLocation;
}

-(void) startUpdate{
    manager = [[CLLocationManager alloc] init];

    LocationListener *listener2 = [[LocationListener alloc]init];

    manager.delegate = listener2;
    manager.desiredAccuracy = kCLLocationAccuracyBest;

    if(manager == nil)
        NSLog(@"Manager is NULL");

    if(listener == nil || manager.delegate == nil)
        NSLog(@"Listener is NULL");

    NSLog(@"startUpdate");

    if ([CLLocationManager locationServicesEnabled]) {
        NSLog(@"Location Services Enabled");
        switch ([CLLocationManager authorizationStatus]) {
            case kCLAuthorizationStatusAuthorized:
                NSLog(@"We have access to location services");
                break;
            case kCLAuthorizationStatusDenied:
                NSLog(@"Location services denied by user");
                break;
            case kCLAuthorizationStatusRestricted:
                NSLog(@"Parental controls restrict location services");
                break;
            case kCLAuthorizationStatusNotDetermined:
                NSLog(@"Unable to determine, possibly not available");
                break;
            default:
                break;
        }
    }
    else {
        NSLog(@"Location Services Are Disabled");
    }

    [manager startUpdatingHeading];
    [manager startUpdatingLocation];

}

-(void) stopUpdate{



}

@end

ロケーションリスナー

@interface LocationListener : NSObject<CLLocationManagerDelegate>

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation;

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations;



    - (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status;

@end

実装

@implementation LocationListener 

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{

//    newLocation.coordinate;

    NSLog(@"Logging Location");
}

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{

    NSLog(@"Logging Location");
}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus) status{


    NSLog(@"Status");
}

@end
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1 に答える 1

0

やってみました

[manager setDelegate:listener2];

または、メモリ管理に問題がある可能性があります。debugger-breakpoint を使用して dealloc メソッドを追加してみて、期待する前に呼び出されるかどうかを確認してください。

- (void)dealloc {
    NSLog(@"Dealloc called");

    self.locationManager = nil;
}
于 2013-11-21T05:26:38.823 に答える