Ios 向MKUserTrackingBarButtonItem添加操作

使用Xcode 6

我的跟踪按钮在导航栏的右侧，它不会触发该方法，我不知道为什么，这应该是正确的方法

按钮本身是功能性的

- (void)viewDidLoad
{
    [super viewDidLoad];

    //location initial settings:
    firstLaunch = YES;
    self.mapView.delegate = self;

    [self.mapView setShowsUserLocation:YES];

    locationManager = [[CLLocationManager alloc] init];

    [locationManager setDelegate:self];

    [locationManager setDistanceFilter:kCLDistanceFilterNone];
    [locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
    currentCentre = self.mapView.centerCoordinate;
    //create a thread queue
    [self queryGooglePlaces: currentCentre];

    //navBar:

    MKUserTrackingBarButtonItem *trackButton = [[MKUserTrackingBarButtonItem alloc] initWithMapView:_mapView];
    [trackButton setTarget:self];
    [trackButton setAction:@selector(track:)];

    self.navigationItem.rightBarButtonItem = trackButton;
}

-(void) track: (id) sender {
    NSLog(@"clicked !");
}

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我认为您不能以这种方式使用MKUserTrackingBarButtonItem——它已经有了一个目标，关联的地图视图和一个改变跟踪模式的操作。相反，我会查看-[MKMapViewDelegate mapView:didChangeUserTrackingMode:animated:]，以便在单击按钮时响应贴图模式的更改

我不认为您可以以这种方式使用MKUserTrackingBarButtonItem-它已经有了一个目标关联的地图视图和一个改变跟踪模式的操作。相反，我会查看-[MKMapViewDelegate mapView:didChangeUserTrackingMode:animated:]，以便在单击按钮时响应贴图模式的更改