超出父视图部分响应事件
1 - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { 2 UIView *view = [super hitTest:point withEvent:event]; 3 if (view == nil) { 4 5 for (UIView *subView in self.subviews) { 6 CGPoint position = [self convertPoint:point toView:subView]; 7 if (CGRectContainsPoint(subView.bounds, position)) { 8 view = subView; 9 break; 10 } 11 } 12 13 } 14 return view; 15 }