tableViewCell 自定义圆角

在一个多cell的Tab了View 中设置第一个和最后一个cell的圆角

其实还是贝塞尔去画 给cell 加一个view 

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {

    if (indexPath.row == 0 && indexPath.section == 0) {

        UIView *backView = [[UIView alloc] initWithFrame:cell.bounds];

        backView.backgroundColor = [UIColor whiteColor];

        backView.layer.cornerRadius = 15;

        cell.backgroundView = backView;

    } else if ((indexPath.section == 1 && indexPath.row == 0) || (indexPath.section == 2 && indexPath.row == 0)) {

        UIView *backView = [[UIView alloc] initWithFrame:cell.bounds];

        backView.backgroundColor = [UIColor whiteColor];

        UIRectCorner corner = UIRectCornerTopLeft | UIRectCornerTopRight;

        UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:backView.bounds byRoundingCorners:corner cornerRadii:CGSizeMake(15, 15)];

        CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

        maskLayer.frame = backView.bounds;

        maskLayer.path = path.CGPath;

        backView.layer.masksToBounds = YES;

        backView.layer.mask = maskLayer;

        cell.backgroundView = backView;

    } else if ((indexPath.section == 1 && indexPath.row == 2) || (indexPath.section == 2 && indexPath.row == 4)) {

        UIView *backView = [[UIView alloc] initWithFrame:cell.bounds];

        backView.backgroundColor = [UIColor whiteColor];

        UIRectCorner corner = UIRectCornerBottomLeft | UIRectCornerBottomRight;

        UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:backView.bounds byRoundingCorners:corner cornerRadii:CGSizeMake(15, 15)];

        CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

        maskLayer.frame = backView.bounds;

        maskLayer.path = path.CGPath;

        backView.layer.masksToBounds = YES;

        backView.layer.mask = maskLayer;

        cell.backgroundView = backView;

    }

}