iphone – 转到/缩放到当前位置功能(MapKit)

发布时间：2020-12-14 20:01:04 所属栏目：百科来源：网络整理

导读：我有一个mapView,它使用viewDidLoad缩放到当前位置： #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.showsUserLocati

我有一个mapView,它使用viewDidLoad缩放到当前位置：

#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;
}

这很好用.我添加了一个搜索栏和一个跳转到特定地址位置的函数.这也很好.我现在想要添加一个按钮来跳回当前位置.你可以帮我一把吗？

干杯

解决方法

您需要将地图的中心设置为点按该按钮的当前位置.说,像这样：

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

（编辑：李大同）

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