最近在ios8.0使用CLLocationManager定位服务,发现老不能定位,查看设置菜单中的项也是处于未知状态.想起之前都有一个弹出框提示用户是否允许定位,这次一直没有出现了.原来ios8.0下的定位服务需要申请授权了. 具体代码如下:
1 if ([CLLocationManager locationServicesEnabled]) { 2 3 self.locationManager = [[CLLocationManager alloc] init]; 4 5 _locationManager.delegate = self; 6 7 _locationManager.desiredAccuracy = kCLLocationAccuracyBest; //控制定位精度,越高耗电量越大。 8 9 _locationManager.distanceFilter = 100; //控制定位服务更新频率。单位是“米” 10 11 [_locationManager startUpdatingLocation]; 12 13 //在ios 8.0下要授权 14 15 if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) 16 17 [_locationManager requestWhenInUseAuthorization]; //调用了这句,就会弹出允许框了. 18 19 }
注意:
在Info.plist文件还要加上NSLocationWhenInUseUsageDescription这个key,Value可以为空,
1 #pragma mark - CLLocationManagerDelegate 2 3 - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { 4 5 6 7 CLLocation * currLocation = [locations lastObject]; 8 9 10 11 NSLog(@"%@",[NSString stringWithFormat:@"%.3f",currLocation.coordinate.latitude]); 12 13 NSLog(@"%@",[NSString stringWithFormat:@"%.3f",currLocation.coordinate.longitude]); 14 15 }