iOS Google地图标记拖动事件

Question

我正在使用谷歌地图SDK构建iOS应用程序.当用户执行longPressAtCoordinate时,我可以在地图上添加一些标记.我的问题是,当我试图拖动一个标记时,diiLongPressAtCoordinate在didBeginDraggingMarker之前触发,因此也添加了一个新标记.

-(void)mapView:(GMSMapView *)mapView didBeginDraggingMarker:(GMSMarker *)marker{
        NSLog(@"begin dragging marker");
    }
    - (void)mapView:(GMSMapView *)mapView didLongPressAtCoordinate (CLLocationCoordinate2D)coordinate{
        NSLog(@"did long press at mapview");
    //when user didLongPressAtCoordinate I add a new marker on the map.
    // I want to prevent the execution of this code before the didBeginDraggingMarker method
    }

Answer 1

我通过创建一个名为isDragging的布尔属性并根据是否正在拖动标记来更改它的值来解决此问题.

- (void)mapView:(GMSMapView *)mapView didBeginDraggingMarker:(GMSMarker *)marker
{
    self.isDragging = YES;
}

- (void)mapView:(GMSMapView *)mapView didEndDraggingMarker:(GMSMarker *)marker
{
    self.isDragging = NO;
}

然后我验证是否在检测到长按时拖动标记:

- (void)mapView:(GMSMapView *)mapView didLongPressAtCoordinate:(CLLocationCoordinate2D)coordinate
{
    if (self.isDragging) {

        return;
    }

    NSLog(@"Long press detected");
}