Question

我正在尝试创建地理围栏并使用CLLocationManager和startMonitoringForRegion来监视它。问题是，我的代理不仅没有调用（是的，我实现了所有方法），但该区域没有存储在[locationManager moniteredRegions]集中。运行以下代码后的日志显示：

2012-07-31 13：46：54.208 GeofencingTest [2357：f803]创建地区：

是的 - 我检查过regionMonitoringEnabled和regionMonitoringAvailable。不 - 我没有在设备上试过这个，只有模拟器。是的 - 通过[locationManager startUpdatingLocation]和CLLocation * location = locationManager.location，我可以从CLLocationManager获取位置更新;

请帮忙！：）

LocationDelegate.m

- (void) createGeofence:(NSString *)identifier withCenter:(CLLocationCoordinate2D)center withRadius:(CLLocationDistance) radius{
   if ([CLLocationManager regionMonitoringEnabled] && [CLLocationManager regionMonitoringAvailable]){
       CLRegion *region = [[CLRegion alloc] initCircularRegionWithCenter:center radius:radius identifier:identifier];
       NSLog(@"should be succesful");
       [locationManager startMonitoringForRegion:region];
   }

   NSLog(@"Created regions:");
   for (CLRegion *my_region in [locationManager monitoredRegions]){
       NSLog(@"    Region: %@", my_region.identifier);
   }    
}
- (id) init{
   self = [super init];
   if (self){
      locationManager = [[CLLocationManager alloc] init];
      locationManager.delegate = self;
      locationManager.desiredAccuracy = kCLLocationAccuracyBest;
   }
   return self;
}

SomeOtherClass.m

- (IBAction)createGeofence:(UIButton *)sender{



   float latitude = [latitudeField.text floatValue];
   float longitude = [longitudeField.text floatValue];
   CLLocationDistance radius = [radiusField.text floatValue];

   CLLocationAccuracy desiredAccuracy = [self getAccuracyConvertedToMeters];

   [self.locationManagerObject createGeofence:identifierField.text
                                   withCenter:CLLocationCoordinate2DMake(latitude, longitude) 
                                   withRadius:radius
                                 withAccuracy:desiredAccuracy];

}

Answer 1

当您记录创建的区域时，可能还没有监视该区域。我认为你应该尝试调用区域监控的委托方法，并在那里查找受监控的区域。

- (void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
    NSLog(@"Start monitoring for region: %@", region.identifier);
    for (CLRegion *my_region in [manager monitoredRegions]){
        NSLog(@"Region: %@", my_region.identifier);
    }
}

- (void)locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)region withError:(NSError *)error {
    NSLog(@"Error: %@", error);
}

startMonitoringForRegion没有创建区域

1 个答案: