ios - 从方法获取 CLLocation 坐标

Question

我遵循 http://www.vellios.com/2010/08/16/core-location-gps-tutorial/ 的教程制作一个应用程序来显示用户的当前位置。它有一个名为 locationUpdate 的方法

- (void)locationUpdate:(CLLocation *)location {
    //locLabel.text = [location description];
    speedLabel.text = [NSString stringWithFormat:@"SPEED: %f", [location speed]];
    latitudeLabel.text = [NSString stringWithFormat:@"LATITUDE: %f", location.coordinate.latitude];
    longitudeLabel.text = [NSString stringWithFormat:@"LONGITUDE: %f", location.coordinate.longitude];
    altitudeLabel.text = [NSString stringWithFormat:@"ALTITUDE: %f", [location altitude]];
}

如何在此方法之外调用 location.coordinate.latitude？

Answer 1

在 .h 文件中创建 CLLocation 变量，然后在位置更新时设置该变量(在下面的方法中)。

- (void)locationUpdate:(CLLocation *)location