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#if !defined(__has_feature) || !__has_feature(objc_arc)
#error "This file requires ARC support."
#endif
#import "GoogleMapsDemos/Samples/MapLayerViewController.h"
#import <GoogleMaps/GoogleMaps.h>
@implementation MapLayerViewController {
GMSMapView *_mapView;
}
- (void)viewDidLoad {
[super viewDidLoad];
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-37.81969
longitude:144.966085
zoom:4];
_mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
self.view = _mapView;
dispatch_async(dispatch_get_main_queue(), ^{
_mapView.myLocationEnabled = YES;
});
UIBarButtonItem *myLocationButton =
[[UIBarButtonItem alloc] initWithTitle:@"Fly to My Location"
style:UIBarButtonItemStylePlain
target:self
action:@selector(didTapMyLocation)];
self.navigationItem.rightBarButtonItem = myLocationButton;
}
- (void)didTapMyLocation {
CLLocation *location = _mapView.myLocation;
if (!location || !CLLocationCoordinate2DIsValid(location.coordinate)) {
return;
}
_mapView.layer.cameraLatitude = location.coordinate.latitude;
_mapView.layer.cameraLongitude = location.coordinate.longitude;
_mapView.layer.cameraBearing = 0.0;
// Access the GMSMapLayer directly to modify the following properties with a
// specified timing function and duration.
CAMediaTimingFunction *curve =
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
CABasicAnimation *animation;
animation = [CABasicAnimation animationWithKeyPath:kGMSLayerCameraLatitudeKey];
animation.duration = 2.0f;
animation.timingFunction = curve;
animation.toValue = @(location.coordinate.latitude);
[_mapView.layer addAnimation:animation forKey:kGMSLayerCameraLatitudeKey];
animation = [CABasicAnimation animationWithKeyPath:kGMSLayerCameraLongitudeKey];
animation.duration = 2.0f;
animation.timingFunction = curve;
animation.toValue = @(location.coordinate.longitude);
[_mapView.layer addAnimation:animation forKey:kGMSLayerCameraLongitudeKey];
animation = [CABasicAnimation animationWithKeyPath:kGMSLayerCameraBearingKey];
animation.duration = 2.0f;
animation.timingFunction = curve;
animation.toValue = @0.0;
[_mapView.layer addAnimation:animation forKey:kGMSLayerCameraBearingKey];
// Fly out to the minimum zoom and then zoom back to the current zoom!
CGFloat zoom = _mapView.camera.zoom;
NSArray *keyValues = @[@(zoom), @(kGMSMinZoomLevel), @(zoom)];
CAKeyframeAnimation *keyFrameAnimation =
[CAKeyframeAnimation animationWithKeyPath:kGMSLayerCameraZoomLevelKey];
keyFrameAnimation.duration = 2.0f;
keyFrameAnimation.values = keyValues;
[_mapView.layer addAnimation:keyFrameAnimation forKey:kGMSLayerCameraZoomLevelKey];
}
@end