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7. Advanced Topics > Time for action — using course for direction in your app
We modify the Hello Location - Location Updates example, to add course and speed values in the Hello Location app.
- Open the
Hello_LocationViewController.hfile, and add two outlets, one for the speed data and another for the course data.@property (retain, nonatomic) IBOutlet UITextField *courseText; @property (retain, nonatomic) IBOutlet UITextField *speedText;
- We just need the speed and course information, so we add two labels and two
UITextFieldsin our XIB file as shown in the following screenshot. Also, we connect the same to the outlets created previously. - In our
ViewDidLoadmethod, we change the location manager's accuracy tokCLLocationAccuracyBestForNavigation. - Next, in the
didUpdateToLocationandlocationDetect, we fetch the values of speed and course from theCLLocationobject.courseText.text = [[NSString alloc] initWithFormat:@"%f",newLocation.course]; speedText.text = [[NSString alloc] initWithFormat:@"%f",newLocation.speed];
