标记事件和手势
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
设置特定的高级标记属性后,您可以监控标记事件,例如点按和手势。
如果点按某个标记,用户可以看到其他信息,例如标记标题或信息摘要。您还可以使用长按手势移动可拖动的标记。
响应标记事件
您可以通过向视图添加 GMSMapViewDelegate
协议并实现相应的回调来响应标记事件。此示例用于标识所选标记的 title
和 snippet
。
Swift
// MARK: GMSMapViewDelegate
func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool {
if let title = marker.title {
if let snippet = marker.snippet {
print("marker title: \(title): snippet: \(snippet)")
}
}
return true
}
Objective-C
// MARK: GMSMapViewDelegate
- (BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker {
if (marker.title && marker.snippet) {
NSLog(@"marker with title:%@ snippet: %@", marker.title, marker.snippet)
}
return YES;
}
按地图的缩放级别控制标记的可见性
如需控制 GMSMarker
的可见性,请实现 GMSMapViewDelegate
协议并添加一个条件来设置 GMSMarker.map
。
Swift
// MARK: GMSMapViewDelegate
func mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {
marker.map = position.zoom >= 14 ? mapView : nil
}
Objective-C
// MARK: GMSMapViewDelegate
- (void)mapView:(GMSMapView *)mapView didChangeCameraPosition:(GMSCameraPosition *)position {
marker.map = position.zoom >= 14 ? mapView : nil;
}
使标记可拖动
启用 draggable
属性后,用户可以通过长按手势拖动地图上的标记。如要使标记可拖动,请将 GMSMarker.draggable
属性设置为 true。
Swift
marker.draggable = true
Objective-C
marker.draggable = YES;
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC):2025-08-31。
[null,null,["最后更新时间 (UTC):2025-08-31。"],[[["\u003cp\u003eGoogle Maps SDK for iOS allows you to monitor marker events like taps and gestures, displaying information like title and snippet when tapped.\u003c/p\u003e\n"],["\u003cp\u003eYou can enable marker dragging using a long press gesture by setting the \u003ccode\u003eGMSMarker.draggable\u003c/code\u003e property.\u003c/p\u003e\n"],["\u003cp\u003eMarker visibility can be controlled based on the map's zoom level using the \u003ccode\u003eGMSMapViewDelegate\u003c/code\u003e and setting the \u003ccode\u003eGMSMarker.map\u003c/code\u003e property conditionally.\u003c/p\u003e\n"],["\u003cp\u003eTo respond to marker events and access details like title and snippet, implement the \u003ccode\u003eGMSMapViewDelegate\u003c/code\u003e protocol and its corresponding callback methods.\u003c/p\u003e\n"]]],["Markers' events, like taps and gestures, can be monitored by adding `GMSMapViewDelegate`. Tapped markers reveal their title and snippet, set using `GMSMarker.title`. Markers can be made draggable with `GMSMarker.draggable`, allowing movement via long press. You can control marker visibility based on zoom level by setting `GMSMarker.map` within the `GMSMapViewDelegate` callback. Implementing the delegate protocol also allows for handling custom responses to specific marker interactions.\n"],null,["When specific advanced marker properties are set, you can monitor marker events\nsuch as taps and [gestures](/maps/documentation/ios-sdk/controls#map_gestures).\nIf a marker is tapped, one can see additional information such as a marker title\nor snippet. One can also move draggable markers using a long press gesture.\n\n- To track marker events, add the [`GMSMapViewDelegate`](/maps/documentation/ios-sdk/reference/objc/Protocols/GMSMapViewDelegate) to your `view`.\n- To make a marker draggable, set the [`GMSMarker.draggable`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSMarker#draggable) property.\n- To set descriptive text for a marker, use the [`GMSMarker.title`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSOverlay#title) property.\n\nRespond to marker events\n\nYou can respond to [marker events](/maps/documentation/ios-sdk/events) by adding\nthe [`GMSMapViewDelegate`](/maps/documentation/ios-sdk/reference/objc/Protocols/GMSMapViewDelegate) protocol to your view and\nimplementing the corresponding callback. This example identifies the `title` and\n`snippet` for a selected marker. \n\nSwift \n\n```swift\n// MARK: GMSMapViewDelegate\n\nfunc mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -\u003e Bool {\n if let title = marker.title {\n if let snippet = marker.snippet {\n print(\"marker title: \\(title): snippet: \\(snippet)\")\n }\n }\n return true\n}\n```\n\nObjective-C \n\n```objective-c\n// MARK: GMSMapViewDelegate\n\n- (BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker {\n if (marker.title && marker.snippet) {\n NSLog(@\"marker with title:%@ snippet: %@\", marker.title, marker.snippet)\n }\n return YES;\n}\n```\n\nControl marker visibility by map zoom level\n\nTo control the visibility of [`GMSMarker`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSMarker), implement the\n[`GMSMapViewDelegate`](/maps/documentation/ios-sdk/reference/objc/Protocols/GMSMapViewDelegate) protocol and add a condition to set\n`GMSMarker.map`. \n\nSwift \n\n```swift\n// MARK: GMSMapViewDelegate\n\nfunc mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {\n marker.map = position.zoom \u003e= 14 ? mapView : nil\n}\n```\n\nObjective-C \n\n```objective-c\n// MARK: GMSMapViewDelegate\n\n- (void)mapView:(GMSMapView *)mapView didChangeCameraPosition:(GMSCameraPosition *)position {\n marker.map = position.zoom \u003e= 14 ? mapView : nil;\n}\n```\n\nMake a marker draggable\n\nWhen you enable the `draggable` property users can drag markers on the map with\na long press gesture. To make a marker draggable, set the `GMSMarker.draggable`\nproperty to true. \n\nSwift \n\n```swift\nmarker.draggable = true\n```\n\nObjective-C \n\n```objective-c\nmarker.draggable = YES;\n```"]]