表格實現複選

-(void)btnSelectAction:(UIButton *)sender
{
    //如果選擇是YES就顯示打勾圖片，否則就隱藏
    if (!isselect)
    {

        [_btnChoose setBackgroundImage:[UIImage imageNamed:@"icon_register_boxon.png"] forState:UIControlStateNormal];
    }
    else
    {
        [_btnChoose setBackgroundImage:[UIImage imageNamed:@"icon_register_boxoff.png"] forState:UIControlStateNormal];

    }
//打勾後狀態取反
    isselect=!isselect;
}