Swift小记：高德地图calloutView不响应点击事件解决方案

问题：在使用高德地图SDK时，高度定制calloutView响应气泡，但发现自定义气泡里的点击事件并不响应。

原因：因为自定义的气泡是添加到大头针上的，而大头针的size只有下面很小一部分，所以calloutView是在大头针的外面的。
而 iOS 按钮超过父视图范围是无法响应事件的处理方法。所以就要重写hittest方法。

在CustomAnnotationView.m中重写hittest方法：

swift版本：

    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        
        var view = super.hitTest(point, with: event)
        
        if view == nil {
            
            if self.calloutView == nil {
                return view
            }
            
            let temPoint1: CGPoint = (self.calloutView?.friendBtn.convert(point, from: self))!
            let temPoint2: CGPoint = (self.calloutView?.settingBtn.convert(point, from: self))!
            
            if (self.calloutView?.friendBtn.bounds.contains(temPoint1))! {
                view = self.calloutView!.friendBtn
            }
            
            if (self.calloutView?.settingBtn.bounds.contains(temPoint2))! {
                view = self.calloutView!.settingBtn
            }
        }
        
        return view
    }

OC版本：

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
UIView *view = [super hitTest:point withEvent:event];
if (view == nil) {
    CGPoint tempoint = [self.calloutView.navBtn convertPoint:point fromView:self];
    if (CGRectContainsPoint(self.calloutView.navBtn.bounds, tempoint))
    {
        view = self.calloutView.navBtn;
    }
}
  return view;
}