didUpdateLocations未调用 [英] didUpdateLocations not called

问题描述

我正在尝试获取当前位置，但是didUpdateLocations中的断点永远不会被调用。

I'm trying to get my current location, but the break point in didUpdateLocations is never being called.

LocationManager：

LocationManager:

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

委托方式：

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

我确认了位置服务和启用和授权。

I confirmed that location services and enabled and authorized.

为什么没有像它应该调用locationManager委托方法？

Why is the locationManager delegate method not being called like it should?

谢谢，
Mike

Thanks, Mike

推荐答案

此外，在iOS8中，你必须有两件额外的东西：

Furthermore in iOS8 you must have two extra things:

• 在 Info.plist 中添加一个密钥，并请求位置管理员授权启动。

• Add a key to your Info.plist and request authorization from the location manager asking it to start.

• NSLocationWhenInUseUsageDescription

NSLocationAlwaysUsageDescription

您需要请求相应位置方法的授权。

You need to request authorization for the corresponding location method.

• [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];

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

这篇关于didUpdateLocations未调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！