UITableView 修改 accessoryView 按下效果

1、修改 accessoryView 为UIButton，添加按下效果 ：

        UIButton *accessBtn = [[UIButtonalloc] init];

        accessBtn.frame =CGRectMake(0,0, 15/2.0,13);

        [accessBtn setImage:[UIImageimageNamed:@"content_icon_nextpage_nor"]forState:UIControlStateNormal];

        [accessBtn setImage:[UIImageimageNamed:@"content_icon_nextpage_sel"]forState:UIControlStateHighlighted];

        cell.accessoryView = accessBtn;

2、自定义 UITableViewCell，重写以下方法：

-(void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated{

    if (highlighted == YES) {

        ((UIButton *)self.accessoryView).highlighted = YES;

    }else{

        ((UIButton *)self.accessoryView).highlighted = NO;

    }

    [super setHighlighted:highlighted animated:animated];

}