增加边框 用颜色事半功倍(方法三)

    #pragma mark - =========给cell添加边框 =========
//TODO:方法一
//    UIBezierPath *maskPath;
//    CGRect boardRect;
//    
//    float h = cell.bounds.size.height;
//    float w = cell.bounds.size.width;
    
//    if (indexPath.row == 0) {
//        boardRect = CGRectMake(1, 0, w-1, h);
//        maskPath = [[UIBezierPath bezierPathWithRoundedRect:cell.bounds byRoundingCorners:UIRectCornerTopLeft cornerRadii:CGSizeMake(10, 10)] bezierPathByReversingPath];

//    }
//    else if (indexPath.row == 6) {
//        boardRect = CGRectMake(-1, 0, w+1, h);
//        maskPath = [[UIBezierPath bezierPathWithRoundedRect:cell.bounds byRoundingCorners:UIRectCornerTopRight cornerRadii:CGSizeMake(10, 10)] bezierPathByReversingPath];
//    } else if (indexPath.row == 35) {
//        boardRect = CGRectMake(0, -1, w, h+1);
//        maskPath = [[UIBezierPath bezierPathWithRoundedRect:cell.bounds byRoundingCorners:UIRectCornerBottomLeft cornerRadii:CGSizeMake(10, 10)] bezierPathByReversingPath];
//    }
//    else {
//        boardRect = CGRectMake(-1, 0, w+2, h);
//        maskPath = [UIBezierPath bezierPathWithRect:boardRect];
//    }
//    
//    for (CALayer *layer in cell.contentView.layer.sublayers) {
//        if ([layer.name isEqualToString:@"maskLayer"]) {
//            [layer removeFromSuperlayer];
//        }
//    }
//
//    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
//    
//    maskLayer.name = @"maskLayer";
//    maskLayer.frame = boardRect;
//    maskLayer.path = maskPath.CGPath;
//    maskLayer.strokeColor = [UIColor redColor].CGColor;
//    maskLayer.lineDashPattern = @[@4, @2];
//    maskLayer.lineWidth = 1.0f;
//    maskLayer.fillColor = [UIColor clearColor].CGColor;
//    maskLayer.masksToBounds = YES;
//    [cell.contentView.layer insertSublayer:maskLayer atIndex:0];
    
 //TODO:方法二
//    CALayer *bottomBorder = [CALayer layer];
//    float height=cell.frame.size.height-1.0f;
//    float width=cell.frame.size.width;
//    bottomBorder.frame = CGRectMake(0.0f, height, width, 1.0f);
//    bottomBorder.backgroundColor = [UIColor lightGrayColor].CGColor;
//    [cell.layer addSublayer:bottomBorder];
//    
//    
//    CALayer *rightBorder = [CALayer layer];
//    float rightHeight=cell.frame.size.height;
//    float rightWidth=cell.frame.size.width-.0f;
//    rightBorder.frame = CGRectMake(rightWidth, 0, 1.0f, rightHeight);
//    rightBorder.backgroundColor = [UIColor lightGrayColor].CGColor;
//    [cell.layer addSublayer:rightBorder];
    
//   TODO:方法三  kUIColorFromRGB(0xeeeeee).CGColor 这个颜色可以省去上边CALayer
    cell.layer.borderColor = kUIColorFromRGB(0xeeeeee).CGColor;
    cell.layer.borderWidth = 0.5;
    cell.layer.masksToBounds = YES;
    [cell setBackgroundColor:[UIColor clearColor]];