情節銷不上的MKMapView

Question

點確切位置

- (void)viewDidLoad 
{ 
    UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(foundTap:)]; 
    tapRecognizer.numberOfTapsRequired = 1; 
    tapRecognizer.numberOfTouchesRequired = 1; 
    [self.myMapView addGestureRecognizer:tapRecognizer]; 
} 

-(void)foundTap:(UITapGestureRecognizer *)recognizer 
{ 
    CGPoint point = [recognizer locationInView:self.myMapView]; 
    CLLocationCoordinate2D tapPoint = [self.myMapView convertPoint:point toCoordinateFromView:self.view]; 
    MKPointAnnotation *point1 = [[MKPointAnnotation alloc] init]; 
    point1.coordinate = tapPoint; 
    [self.myMapView addAnnotation:point1]; 
} 

我用上面的代碼來做出的MKMapView針點時，我選擇的MKMapView的地方它不地步，我正好touches.It遠遠有點其中i touches.What我的代碼錯了嗎？。任何幫助將不勝感激。提前感謝。

Answer 1

嘗試改變傳入的對象到locationInView:方法self.view：

-(void)foundTap:(UITapGestureRecognizer *)recognizer 
{ 
    CGPoint point = [recognizer locationInView:self.view]; 

    CLLocationCoordinate2D tapPoint = [self.myMapView convertPoint:point toCoordinateFromView:self.view]; 

    MKPointAnnotation *point1 = [[MKPointAnnotation alloc] init]; 

    point1.coordinate = tapPoint; 

    [self.myMapView addAnnotation:point1]; 
} 

Answer 2

我知道對方的回答是爲你工作，但我只是想展現給使用convertPoint:toCoordinateFromView:的正確方法。相反，它傳遞的容器視圖的，應當通過地圖視圖的一點是：

CLLocationCoordinate2D tapPoint = [self.myMapView convertPoint:point 
              toCoordinateFromView:self.myMapView]; 

，節省了意見交換之間。下面是完整的方法：

-(void)foundTap:(UITapGestureRecognizer *)recognizer 
{ 
    CGPoint point = [recognizer locationInView:self.myMapView]; 
    CLLocationCoordinate2D tapPoint = [self.myMapView convertPoint:point toCoordinateFromView:self.myMapView]; 
    MKPointAnnotation *point1 = [[MKPointAnnotation alloc] init]; 
    point1.coordinate = tapPoint; 
    [self.myMapView addAnnotation:point1]; 
}