1.
ios7只要开始定位,系统就会自动要求你对应用程序授权
ios8之后,必须要代码中实现要求用户对应用程序授权 ,在plist中添加以下两个属性
NSLocationWhenInUseDescription，允许在前台获取GPS的描述
NSLocationAlwaysUsageDescription，允许在后台获取GPS的描述
2,代码
#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>
@interface ViewController ()<CLLocationManagerDelegate>
@property(nonatomic,strong)CLLocationManager*manger;
@end
@implementation ViewController
-(CLLocationManager*)manger
{
if (_manger==nil) {
_manger=[[CLLocationManager alloc]init];
}
return _manger;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.manger.delegate=self;
if ([[UIDevice currentDevice].systemVersion floatValue]>8.0) {
[self.manger requestAlwaysAuthorization];//后台运行的时候执行获取位置信息
//[self.manger requestWhenInUseAuthorization];//前台执行的时候获取位置信息
}
else
{
[self.manger startUpdatingLocation];
}
}
//授权状态改变的时候调用
-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
if (status == kCLAuthorizationStatusNotDetermined) {
NSLog(@"等待用户授权");
}else if (status == kCLAuthorizationStatusAuthorizedAlways ||
status == kCLAuthorizationStatusAuthorizedWhenInUse)
{
NSLog(@"授权成功");
// 开始定位
[self.manger startUpdatingLocation];
}
else
{
NSLog(@"授权失败");
}
}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
//如果只需要获取一次,可以获取位置之后就停止
[self.manger stopUpdatingLocation];
CLLocation *location=[locations lastObject];
NSLog(@"经度=%f,维度=%f 速度=%f ",location.coordinate.latitude,location.coordinate.longitude,location.speed);
}
@end