iphone - 转到/缩放到当前位置功能（MapKit）

Question

我有一个 mapView 使用以下命令缩放到当前位置viewDidLoad：

#define METERS_PER_MILE 1609.344

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
    [super viewDidLoad];

    mapView.showsUserLocation=TRUE;

    // zoom to  a specific area
    CLLocationCoordinate2D zoomLocation;
    zoomLocation.latitude = -28.994167;
    zoomLocation.longitude = 134.866944;

    MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(zoomLocation, 1900*METERS_PER_MILE, 1900*METERS_PER_MILE);
    MKCoordinateRegion adjustedRegion = [mapView regionThatFits:viewRegion];    

    // make sure the Google water mark is always visible
    mapView.autoresizingMask =
    (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);

    [mapView setRegion:adjustedRegion animated:YES];        

    mapView.delegate=self;

    searchBar.delegate = self;
}

这工作正常。我添加了一个搜索栏和一个跳转到特定地址位置的功能。这也很好用。我现在想添加一个按钮来跳回当前位置。请帮帮我好吗？

干杯

score 11 · Accepted Answer

您需要点击该按钮将地图的中心设置为当前位置。说，像这样：

- (IBAction)showCurrentLocation {        
    [mapView setCenterCoordinate:mapView.userLocation.location.coordinate animated:YES];
}

score 2 · Accepted Answer

2

你也可以试试：

mapView.userTrackingMode=YES;
mapView.userTrackingMode=NO;

于 2013-02-03T10:55:49.097 回答

score 1 · Accepted Answer

您可以将此 IBAction 链接到您的 UIButton，它将在当前位置移动地图并对其进行缩放。

@IBOutlet weak var mapView: MKMapView!

@IBAction func zoomToUserCurrentLocation(sender: AnyObject) {
    if self.mapView != nil {
        self.mapView.setRegion(MKCoordinateRegionMake(
            self.mapView.userLocation.coordinate, 
            MKCoordinateSpanMake(0.1, 0.1)
        ), animated: true)
    }
}

MKCoordinateSpan 定义了地图区域所跨越的区域，这些值越小，地图越近缩放。

score 0 · Accepted Answer

- (void)showCurrentLocation{

    MKMapPoint annotationPoint = MKMapPointForCoordinate(self.mapView.userLocation.coordinate);
    MKMapRect zoomRect = MKMapRectMake(annotationPoint.x, annotationPoint.y, 0.0, 0.0);
    [self.mapView setVisibleMapRect:zoomRect animated:YES];
}

score 0 · Accepted Answer

斯威夫特

在按钮操作中添加此行yourMKMapView.setUserTrackingMode(.follow, animated: true)

确保yourMKMapView.showsUserLocation = true添加viewDidLoad()

iphone - 转到/缩放到当前位置功能（MapKit）

5 回答 5

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