iPhone map 套件 : select location (coordinates) manually by touching MKMapView

Question

我想为用户提供(手动)选择纬度的可能性。又长。通过触摸 MKMapView 进行坐标。我怎样才能实现这一目标？

我已经看到 MKMapView 委托(delegate)提供了方法 convertPoint:toCooperativeFromView: 。我认为，这可能是一个好的开始，但我不知道如何通过触摸操作创建一个点。

如果有任何帮助，我将不胜感激。谢谢。

Answer 1

vwMap是MKMapview对象的名称:

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(foundTap:)]; 
tapRecognizer.numberOfTapsRequired = 1;
tapRecognizer.numberOfTouchesRequired = 1; 
[vwMap addGestureRecognizer:tapRecognizer];



-(IBAction)foundTap:(UITapGestureRecognizer *)recognizer {
    CGPoint point = [recognizer locationInView:vwMap];
    CLLocationCoordinate2D tapPoint = [vwMap convertPoint:point toCoordinateFromView:vwMap];

    MKPointAnnotation *point1 = [[MKPointAnnotation alloc] init]; 
    point1.coordinate = tapPoint;

    [vwMap addAnnotation:point1];
}