ios - 未调用 didUpdateLocations

Question

我正在尝试获取我的当前位置，但从未调用 didUpdateLocations 中的断点。

位置管理器:

locationManager = [[CLLocationManager alloc] init];
[locationManager setDelegate:self];
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[locationManager setDesiredAccuracy:kCLDistanceFilterNone];
[locationManager startUpdatingLocation];

委托(delegate)方法:

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

我已确认位置服务并已启用和授权。

为什么没有按应有的方式调用 locationManager 委托(delegate)方法？

Answer 1

此外，在 iOS8 中你必须有两个额外的东西:

• 将 key 添加到您的 Info.plist 并向要求其启动的位置管理器请求授权。

  • NSLocationWhenInUseUsageDescription

  • NSLocationAlwaysUsageDescription

• 您需要为相应的定位方法请求授权。

  • [self.locationManager requestWhenInUseAuthorization]

  • [self.locationManager requestAlwaysAuthorization]

代码示例:

self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
// Check for iOS 8. Without this guard the code will crash with "unknown selector" on iOS 7.
if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
    [self.locationManager requestWhenInUseAuthorization];
}
[self.locationManager startUpdatingLocation];

来源:http://nevan.net/2014/09/core-location-manager-changes-in-ios-8/