iphone - 获取磁航向值

Question

我可以得到以下代表的磁航向值吗？如果是这样，我怎样才能把它变成一个UILabel？

- (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading {

}

Answer 1

是的：

- (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading {
    myLabel.text = [NSString stringWithFormat:@"%f", [newHeading magneticHeading]];
}