ios 在 MapView 中显示用户位置
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Show User Location in MapView
提问by Christian Seiler
I'm writing an App with a mapView showing some Annotations.
我正在编写一个带有显示一些注释的 mapView 的应用程序。
Now I want to show the User's current location in the mapView. I get the current Location using this code:
现在我想在 mapView 中显示用户的当前位置。我使用此代码获取当前位置:
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)location
I get the details of the current location in the Log
我在日志中获取当前位置的详细信息
2013-10-14 12:03:34.291 AppName[13200:a0b] (
"<+7.35000000,+47.32000000> +/- 5.00m (speed -1.00 mps / course -1.00) @ 10/14/13, 12:03:34 PM Central European Summer Time")
Now I don't get the location into the mapView as this blue pulsing dot.
现在我没有将位置作为这个蓝色脉冲点输入到 mapView 中。
Please give some hints.
请给一些提示。
回答by incmiko
You can enable the userlocation by this:
您可以通过以下方式启用用户定位:
mapView.showsUserLocation = YES;
if you want to center on this location:
如果你想以这个位置为中心:
[mapView setCenterCoordinate:mapView.userLocation.location.coordinate animated:YES];
if you are using:
如果您正在使用:
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[MKUserLocation class]]) {
return nil;
}
// etc...
}
回答by saswanb
In iOS10 I could not get the blue dot for the user location to show until adding the key NSLocationWhenInUseUsageDescription to my Info.plist, with a string description of how location info would be used in the app.
在 iOS10 中,在将键 NSLocationWhenInUseUsageDescription 添加到我的 Info.plist 之前,我无法显示用户位置的蓝点,并带有一个关于如何在应用程序中使用位置信息的字符串描述。
回答by Nico S.
I ran into the same because I removed my type check code for AnnotationViews because I didn't need that anymore. So I made a Swift version of @incmiko's answer.
我遇到了同样的问题,因为我删除了 AnnotationViews 的类型检查代码,因为我不再需要它了。所以我制作了@incmiko 答案的 Swift 版本。
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
guard !annotation.isKind(of: MKUserLocation.self) else { return nil }
//create annotation view
return MKAnnotationView()
}