长按地图获取经纬度添加图钉

最新推荐文章于 2025-07-13 11:20:47 发布

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本文介绍如何在iOS应用中使用MKMapView通过长按手势来获取地图上的经纬度坐标，并在该位置添加图钉标记。具体实现包括设置长按时长、允许的移动距离、监听长按事件并转换触摸点为地图坐标。

长按地图获取经纬度
[quote]

UILongPressGestureRecognizer *lpress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
lpress.minimumPressDuration = 0.3;//按0.5秒响应longPress方法
lpress.allowableMovement = 10.0;
//给MKMapView加上长按事件
[mapView addGestureRecognizer:lpress];//mapView是MKMapView的实例
[lpress release];

- (void)longPress:(UIGestureRecognizer*)gestureRecognizer {
if (gestureRecognizer.state == UIGestureRecognizerStateBegan){ //这个状态判断很重要
//坐标转换
CGPoint touchPoint = [gestureRecognizer locationInView:self.mapView];
CLLocationCoordinate2D touchMapCoordinate =
[self.mapView convertPoint:touchPoint toCoordinateFromView:self.mapView];
//这里的touchMapCoordinate.latitude和touchMapCoordinate.longitude就是你要的经纬度，
NSLog(@"%f",touchMapCoordinate.latitude);
NSLog(@"%f",touchMapCoordinate.longitude);
}
}
[/quote]

长按添加图钉


- (void)longPress:(UIGestureRecognizer*)gestureRecognizer {
    if (gestureRecognizer.state == UIGestureRecognizerStateBegan){  //这个状态判断很重要
        //坐标转换
        CGPoint touchPoint = [gestureRecognizer locationInView:self.mapView];
        CLLocationCoordinate2D touchMapCoordinate =
        [self.mapView convertPoint:touchPoint toCoordinateFromView:self.mapView];
        //这里的touchMapCoordinate.latitude和touchMapCoordinate.longitude就是你要的经纬度，
        NSLog(@"%f",touchMapCoordinate.latitude);
        NSLog(@"%f",touchMapCoordinate.longitude);
        //30.264998 120.122538   30.285012 120.117989
        LocationObject *aLocationObject = [[LocationObject alloc]initWithTitle:@"hello" latitue:touchMapCoordinate.latitude longitude:touchMapCoordinate.longitude];
        aLocationObject._subTitleString = @"world";
        NSMutableArray *_mapAnnotations = [[NSMutableArray alloc]initWithCapacity:1];
        [_mapAnnotations addObject:aLocationObject];
        [self.mapView addAnnotations:_mapAnnotations ];
        [_mapAnnotations release];
        [aLocationObject release];

    }
}