mkpinannotation question on mkmapview

I have added an mkpinannotation in an mkmapview.

I wo开发者_运维百科uld like to move the pin to the place i tap on the mkmapview.

Is there an example anywhere?

Help appriciated.

---

First, add the gesture recognizer to the map view:

UITapGestureRecognizer *tgr = [[UITapGestureRecognizer alloc] 

        initWithTarget:self action:@selector(tapGestureHandler:)];

tgr.delegate = self; 

 //also add 
<UIGestureRecognizerDelegate> to @interface

[mapView addGestureRecognizer:tgr];

[tgr release];

Next, implement shouldRecognizeSimultaneously:WithGestureRecognizer: and return YES so your tap gesture recognizer can work at the same time as the map's (otherwise taps on pins won't get handled automatically by the map)

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer 
    shouldRecognizeSimultaneouslyWithGestureRecognizer
        :(UIGestureRecognizer *)otherGestureRecognizer

{

    return YES;
}

Finally, implement the gesture handler:

- (void)tapGestureHandler:(UITapGestureRecognizer *)tgr
{

    CGPoint touchPoint = [tgr locationInView:mapView];

    CLLocationCoordinate2D touchMapCoordinate 
        = [mapView convertPoint:touchPoint toCoordinateFromView:mapView];

    NSLog(@"tapGestureHandler: touchMapCoordinate = %f,%f", 
        touchMapCoordinate.latitude, touchMapCoordinate.longitude);

}

In this way you can get the Latitude and Longitude for location which you touch on the Map and once you get latitude and longitude you can easily drop a pin in to that location.