iOS:让超出父视图范围的子视图响应事件，在UIView范围外响

https://www.cnblogs.com/WZLpq-home/p/5616309.html[图片上传中...(image.png-88d695-1603266135462-0)]
//重写该方法后可以让超出父视图范围的子视图响应事件

• (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
  UIView *view = [super hitTest:point withEvent:event];
  if (view == nil) {
  for (UIView *subView in self.subviews) {
  CGPoint tp = [subView convertPoint:point fromView:self];
  if (CGRectContainsPoint(subView.bounds, tp)) {
  view = subView;
  }
  }
  }
  return view;
  }