ios - 我没有收到 GPS 位置更新。我错过了什么？

Question

我没有收到 GPS 位置更新。我正在使用 iPad2 来运行代码。这是我的代码:

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

        //location
        locationManager = [[[CLLocationManager alloc] init] autorelease]; // Create new instance of locMgr
        locationManager.delegate = self;

        locationManager.distanceFilter = kCLDistanceFilterNone; 
        locationManager.desiredAccuracy = kCLLocationAccuracyBest;

        [locationManager startUpdatingLocation];
        NSLog(@"locationManager startUpdatingLocation"); //this core runs correctly

...
}

- (void)locationManager:(CLLocationManager *)manager
   didFailWithError:(NSError *)error
{
     NSLog(@"Error: %@", [error description]);
 }


- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation 
{
    location = [newLocation description];
    NSLog(@"new location: %@", location); //never printed   
}

我应该在首选项中允许位置吗？我期待 iPad 请求共享位置的权限，但我没有得到任何权限。

谢谢

Answer 1

locationManager 是保留属性吗？如果不是，请将其合并并在 alloc+init 行前面添加 self.，这样 locationManager 就不会在该方法结束时被释放:

self.locationManager = [[[CLLocationManager alloc] init] autorelease];

同时在dealloc中添加[locationManager release];。