自定义地图标注视图点击即可隐藏

我已经制作了自定义地图标注。我的标注包含UIButtons and UITextView。当我点击时UIButton，按起来很好。但是当我点击UITextView它将光标移动到点击位置，然后取消选择图钉并消失标注...

我已经实施了hitTest:withEvent:MyAnnotationView 的方法如下：https://stackoverflow.com/a/13495795/440168 https://stackoverflow.com/a/13495795/440168

但正如我在日志中看到的，[super hitTest:withEvent:]一去不复返nil.

这是我的MyAnnotationView方法：

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
    BOOL isInside = [super pointInside:point withEvent:event];
    if (isInside)
        return YES;

    for (UIView * subview in self.subviews)
    {
        if ([subview isKindOfClass:[NSClassFromString(@"UICalloutView") class]])
            continue;

        CGPoint inPoint = [self convertPoint:point toView:subview];
        BOOL isInside = [subview pointInside:inPoint withEvent:nil];
        if (isInside)
            return YES;
    }

    return NO;
}

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    UIView * hitView = [super hitTest:point withEvent:event];
    if (hitView)
        return hitView;

    for (UIView * subview in self.subviews)
    {
        if ([subview isKindOfClass:[NSClassFromString(@"UICalloutView") class]])
            continue;

        CGPoint inPoint = [self convertPoint:point toView:subview];
        hitView = [subview hitTest:inPoint withEvent:event];
        if (hitView)
            return hitView;
    }

    return nil;
}

更新1：

这是我添加自定义标注视图的代码：

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
    for (UIView * subview in view.subviews)
        subview.hidden = YES;
    [view addSubview:self.myCalloutView];
    self.myCalloutView.center = CGPointMake(view.bounds.size.width/2,-self.myCalloutView.bounds.size.height/2);

    // ...
}

更新2：

我刚刚用 durty hack 实现了我的 MKMapView 子类。但这有效！

@implementation HNPMapView

- (void)handleTap:(UITapGestureRecognizer *)recognizer
{
    for (UIView * v in [self findSubviewsOfClass:[MyCallout class]]) {
        CGPoint point = [recognizer locationInView:v];
        if (CGRectContainsPoint(v.bounds, point))
            return;
    }

    //[super performSelector:@selector(handleTap:) withObject:recognizer];
    void (*functionPointer)(id,SEL,...) = [MKMapView instanceMethodForSelector:@selector(handleTap:)];
    functionPointer(self,@selector(handleTap:),recognizer);
}

@end

并使用此类别在视图层次结构中查找标注：

@interface UIView (FindSubview)
- (NSArray *)findSubviewsOfClass:(Class)class;
@end
@implementation UIView (FindSubview)
- (NSArray *)findSubviewsOfClass:(Class)class
{
    NSMutableArray * found = [NSMutableArray array];
    for (UIView * subview in self.subviews)
    {
        if ([subview isKindOfClass:class])
            [found addObject:subview];
        [found addObjectsFromArray:[subview findSubviewsOfClass:class]];
    }
    return found;
}
@end

在 hitTest 方法中，您应该创建一个虚拟矩形来根据要触摸的对象定义可触摸区域。

在 UICalloutView 中，您应该使用另一个循环来查找 UITextView。

之后，您应该根据 UITextView 尺寸和 UICalloutView 视图原点定义此虚拟矩形。

您也不需要在 for 循环中使用 continue 语句， 当返回启动时，所有循环将立即停止。

所以你的 hitTest 方法应该是这样的，

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    UIView * hitView = [super hitTest:point withEvent:event];

    if (hitView)
        return hitView;

    for (UIView * subview in self.subviews)
    {

        if ([subview isKindOfClass:[NSClassFromString(@"UICalloutView") class]]) {

            for(UIView *subTextView in subview.subviews){
                if([subTextView isKindOfClass:[UITextView class]]){

                    CGRect touchableArea = CGRectMake(subview.frame.origin.x, subview.frame.origin.y, subTextView.frame.size.width, subTextView.frame.size.height);
                    if (CGRectContainsPoint(touchableArea, point)){
                        return subTextView;
                    }
                }               
            }            
        }
    }    
    return nil;
}