ios - 绘图针未指向 MKMapView 上的确切位置

Question

- (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];
}

当我在 MKMapView 中选择一个位置时，我使用上面的代码在 MKMapView 上定位它并没有指向我确切接触的地方。它离我接触的地方不远。我的代码有什么问题？任何帮助将不胜感激.提前致谢。

Answer 1

尝试将传入对象的locationInView:方法改为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];
}