点击事件时自定义信息框
问题描述:
我试图让一个信息框与标记标准相同,以便在点击我的多段线时显示。当线条被点击时,我得到了一个NSLog
输出,但现在我需要显示信息框而不是NSLog
。我见过一些Javascript的例子,但没有客观的c例子。点击事件时自定义信息框
- (void)loadView {
// Create a GMSCameraPosition
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:37.551927
longitude:-77.456292
zoom:18];
GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
CLLocationCoordinate2D position = CLLocationCoordinate2DMake(37.551709, -77.456510);
mapView.settings.myLocationButton = YES;
mapView.myLocationEnabled = YES;
self.view = mapView;
mapView.delegate = self;
GMSMutablePath *path = [GMSMutablePath path];
[path addCoordinate:CLLocationCoordinate2DMake(37.552243, -77.457415)];
[path addCoordinate:CLLocationCoordinate2DMake(37.551054, -77.455443)];
GMSPolyline *polyline = [GMSPolyline polylineWithPath:path];
UILabel *myLabel = [[UILabel alloc] init];
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelTapped)];
tapGestureRecognizer.numberOfTapsRequired = 1;
[myLabel addGestureRecognizer:tapGestureRecognizer];
myLabel.userInteractionEnabled = YES;
polyline.spans = @[[GMSStyleSpan spanWithColor:[UIColor greenColor]]];
polyline.strokeWidth = 5.f;
polyline.tappable = true;
polyline.map = mapView;
}
- (void)mapView:(GMSMapView *)mapView didTapOverlay:(GMSOverlay *)overlay
{
NSLog(@"in didTapOverlay");
}
@end
答
请查看iOS Maps教程中的Events指南。 下面是在Objective-C片段:
- (void)loadView {
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:1.285
longitude:103.848
zoom:12];
GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
mapView.delegate = self;
self.view = mapView;
}
#pragma mark - GMSMapViewDelegate
- (void)mapView:(GMSMapView *)mapView
didTapAtCoordinate:(CLLocationCoordinate2D)coordinate {
NSLog(@"You tapped at %f,%f", coordinate.latitude, coordinate.longitude);
}
下面是一个示范SO thread使用GMSMapViewDelegate:
1.conform到GMSMapViewDelegate协议。
@interface YourViewController() <GMSMapViewDelegate>
// your properties
@end
2.set your mapView_ delegate.
mapView_.delegate = self;
3.implement the GMSMapViewDelegate method
- (void)mapView:(GMSMapView *)mapView didTapInfoWindowOfMarker:(GMSMarker *)marker {
// your code
}
增加:marker.userData
是有用的。你可以设置你需要的数据并使用它在- mapView:didTapInfoWindowOfMarker: