ios - 位置访问权限警报未显示且 CLLocation 管理器委托(delegate)方法未在 xcode 6.4 中调用。请指教

Question

我在 Objective C 类中完成了 CLLocationmager。在这里，我的代码是，

CLLocationManager *loc = [[CLLocationManager alloc]init];
[loc setDelegate:self];
[loc requestWhenInUseAuthorization];
[loc requestAlwaysAuthorization];
loc.desiredAccuracy = kCLLocationAccuracyBest; 
loc.distanceFilter = kCLHeadingFilterNone;
[loc startUpdatingLocation];
[loc startUpdatingHeading];

然后在.plist 文件中添加了隐私设置。仍然没有得到任何回应。

Answer 1

https://developer.apple.com/documentation/corelocation/cllocationmanager?language=objc

3. Create an instance of the CLLocationManager class and store a strong reference to it somewhere in your app.

   Keeping a strong reference to the location manager object is required until all tasks involving that object are complete. Because most location manager tasks run asynchronously, storing your location manager in a local variable is insufficient.