修改tableview开启多选编辑模式下选中按钮的图片

-(void)layoutSubviews{    [super layoutSubviews];    for (UIControl *control in self.subviews){        if ([control isMemberOfClass:NSClassFromString(@"UITableViewCellEditControl")]){            for (UIView *v in control.subviews)            {                if ([v isKindOfClass: [UIImageView class]]) {                    UIImageView *img=(UIImageView *)v;                    if (self.selected) {                        img.image=[UIImage imageNamed:@"选中"];                    }else                    {                        img.image=[UIImage imageNamed:@"未选中"];                    }                }            }        }    }}