iOS sdk中是否提供当前位置/指南针标题按钮？

Question

I am working on a sample map kit app for iOS. I have everything working and a toolbar button to toggle the MKUserTrackingMode. This may seem like a silly question but I have searched all the options in the IB and looked in the documentation, and I can't find any button options like the one for the current location/compass heading used in the iOS Maps app. Is that particular button available to developers?

Answer 1

You need to create a MKUserTrackingBarButtonItem and pass it the MKMapview in the constructor, then add that button item to the navigation menu (or where ever it is your button should be).

- (void)viewDidLoad
{
    [super viewDidLoad];    
    MKUserTrackingBarButtonItem *buttonItem = [[MKUserTrackingBarButtonItem alloc] initWithMapView:self.map];
    self.navigationItem.rightBarButtonItem = buttonItem;
}

Answer 2

也许我误解了你的问题，但听起来你想要将MKMapView的userTrackingMode属性设置为MKUserTrackingMode.MKUserTrackingModeFollowWithHeading 。