GMSMapView始终显示相同的iOS位置

Question

正如标题所说,无论我给出什么坐标,我都会看到相同的位置.

这是我的代码:

我正在使用故事板,我的视图中有一个子视图.子视图的类型为GMSMapView,并且链接正确.

.H

@property (strong, nonatomic) IBOutlet GMSMapView *mymap;

.M

@implementation DealViewController
{
    GMSMapView *mapView_;
}


@synthesize mymap=_mymap;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self.view layoutIfNeeded];

    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.8683
                                                            longitude:151.2086
                                                                 zoom:6];
    mapView_ = [GMSMapView mapWithFrame:CGRectMake(0, 0, 300, 300) camera:camera];
    mapView_.myLocationEnabled  = YES;
    mapView_.mapType = kGMSTypeSatellite;
    mapView_.delegate = self;
    self.mymap=mapView_;

}

我也试过这个,但我得到了同样的结果:

mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];

上面有什么问题？

Answer 1

经过几个小时的残酷研究同样的问题,我发现viewDidLoad方法应该是这样的:

- (void)viewDidLoad
{
    [super viewDidLoad];

    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:obj.latitude
                                 longitude:obj.longitude
                                 zoom:12];
    self.mapView.camera = camera;
}

换句话说,在这种情况下,你不应该将任何值(如'[GMSMapView mapWithFrame:CGRectMake(0,0,300,300)camera:camera];')分配给self.mapView,只需设置它的属性'camera'值即可.

这适合我.我希望这也能为其他人节省时间.

Answer 2

如果您使用的是故事板,请确保在故事板UI中将视图类型设置为GMSMapView.

那你需要做的就是:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self.view layoutIfNeeded];

    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.8683
                                                            longitude:151.2086
                                                                 zoom:6];
    self.mymap.camera = camera;
    self.mymap.myLocationEnabled  = YES;
    self.mymap.mapType = kGMSTypeSatellite;
    self.mymap.delegate = self;
}

Google Maps github页面上提供了一个故事板示例.