4

我已经制作了自定义地图标注。我的标注包含UIButtons和UITextView。当我点击UIButton时，它很好。但是当我点击UITextView它时，它会将光标移动到点击位置，然后取消选择大头针并消失标注......

我已经实现hitTest:withEvent:了 MyAnnotationView 的方法，如下所示：https ://stackoverflow.com/a/13495795/440168

但正如我在日志中看到的，[super hitTest:withEvent:]永远不会返回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
4

1 回答 1

1

在 hitTest 方法中，您应该创建一个虚拟矩形来根据您的对象定义可触摸区域以进行触摸。

在 UICalloutView 你应该使用另一个循环来找到你的 UITextView。

之后，您应该根据您的 UITextView 尺寸和 UICalloutView 视图原点定义这个虚拟矩形。

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

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;
}
于 2013-07-04T08:40:27.067 回答