Ios UITableView部分周围的边框

Ios UITableView部分周围的边框,ios,objective-c,uitableview,Ios,Objective C,Uitableview,如何在tableview的每个部分周围设置边框?附件是我正在寻找的图片。如果查看图像,它在每个tableview部分周围都有一个边框 对于这个问题,我对tableView的四舍五入进行了修改,只需添加带有以下代码的tableView:willDisplayCell:forRowAtIndexPath:委托方法(简单的复制/粘贴应该可以),它也可以用于分组表。我评论了应该在哪里设置边框的宽度和颜色 - (void)tableView:(UITableView *)tableView willDis

如何在tableview的每个部分周围设置边框?附件是我正在寻找的图片。如果查看图像,它在每个tableview部分周围都有一个边框


对于这个问题,我对tableView的四舍五入进行了修改,只需添加带有以下代码的
tableView:willDisplayCell:forRowAtIndexPath:
委托方法(简单的复制/粘贴应该可以),它也可以用于分组表。我评论了应该在哪里设置边框的宽度和颜色

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

    if ([cell respondsToSelector:@selector(tintColor)]) {
        CGFloat cornerRadius = 5.f;
        cell.backgroundColor = UIColor.clearColor;
        CAShapeLayer *layer = [[CAShapeLayer alloc] init];
        CGMutablePathRef pathRef = CGPathCreateMutable();
        CGRect bounds = CGRectInset(cell.bounds, 10, 0);
        BOOL addLine = NO;
        if (indexPath.row == 0 && indexPath.row == [tableView numberOfRowsInSection:indexPath.section]-1) {
            CGPathAddRoundedRect(pathRef, nil, bounds, cornerRadius, cornerRadius);
        } else if (indexPath.row == 0) {
            CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds));
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds), CGRectGetMidX(bounds), CGRectGetMinY(bounds), cornerRadius);
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds), CGRectGetMaxX(bounds), CGRectGetMidY(bounds), cornerRadius);
            CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds));
            addLine = YES;
        } else if (indexPath.row == [tableView numberOfRowsInSection:indexPath.section]-1) {
            CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds));
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds), CGRectGetMidX(bounds), CGRectGetMaxY(bounds), cornerRadius);
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds), CGRectGetMaxX(bounds), CGRectGetMidY(bounds), cornerRadius);
            CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds));
        } else {
            CGPathAddRect(pathRef, nil, bounds);
            addLine = YES;
        }
        layer.path = pathRef;
        CFRelease(pathRef);
        //set the border color
        layer.strokeColor = [UIColor lightGrayColor].CGColor;
        //set the border width
        layer.lineWidth = 1;
        layer.fillColor = [UIColor colorWithWhite:1.f alpha:1.0f].CGColor;


        if (addLine == YES) {
            CALayer *lineLayer = [[CALayer alloc] init];
            CGFloat lineHeight = (1.f / [UIScreen mainScreen].scale);
            lineLayer.frame = CGRectMake(CGRectGetMinX(bounds), bounds.size.height-lineHeight, bounds.size.width, lineHeight);
            lineLayer.backgroundColor = tableView.separatorColor.CGColor;
            [layer addSublayer:lineLayer];
        }

        UIView *testView = [[UIView alloc] initWithFrame:bounds];
        [testView.layer insertSublayer:layer atIndex:0];
        testView.backgroundColor = UIColor.clearColor;
        cell.backgroundView = testView;
    }
}
另外,请记住在Interface Builder中将表的separator属性设置为none(默认情况下为单线),如果以编程方式创建表,则应如下设置该属性

yourTableView.separatorStyle = UITableViewCellSeparatorStyleNone

以下是公认答案的快速版本

func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    if (cell.respondsToSelector("tintColor")) {
        var cornerRadius: CGFloat = 5;
        cell.backgroundColor = UIColor.clearColor()
        var layer: CAShapeLayer  = CAShapeLayer()
        var pathRef: CGMutablePathRef  = CGPathCreateMutable()
        var bounds: CGRect  = CGRectInset(cell.bounds, 10, 0)
        var addLine: Bool  = false
        if (indexPath.row == 0 && indexPath.row == tableView.numberOfRowsInSection(indexPath.section)-1) {
            CGPathAddRoundedRect(pathRef, nil, bounds, cornerRadius, cornerRadius);
        } else if (indexPath.row == 0) {
            CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds));
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds), CGRectGetMidX(bounds), CGRectGetMinY(bounds), cornerRadius);
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds), CGRectGetMaxX(bounds), CGRectGetMidY(bounds), cornerRadius);
            CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds));
            addLine = true;
        } else if (indexPath.row == tableView.numberOfRowsInSection(indexPath.section)-1) {
            CGPathMoveToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMinY(bounds));
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMinX(bounds), CGRectGetMaxY(bounds), CGRectGetMidX(bounds), CGRectGetMaxY(bounds), cornerRadius);
            CGPathAddArcToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMaxY(bounds), CGRectGetMaxX(bounds), CGRectGetMidY(bounds), cornerRadius);
            CGPathAddLineToPoint(pathRef, nil, CGRectGetMaxX(bounds), CGRectGetMinY(bounds));
        } else {
            CGPathAddRect(pathRef, nil, bounds);
            addLine = true;
        }
        layer.path = pathRef;
        //CFRelease(pathRef);
        //set the border color
        layer.strokeColor = UIColor.lightGrayColor().CGColor;
        //set the border width
        layer.lineWidth = 1;
        layer.fillColor = UIColor(white: 1, alpha: 1.0).CGColor;


        if (addLine == true) {
            var lineLayer: CALayer = CALayer();
            var lineHeight: CGFloat  = (1 / UIScreen.mainScreen().scale);
            lineLayer.frame = CGRectMake(CGRectGetMinX(bounds), bounds.size.height-lineHeight, bounds.size.width, lineHeight);
            lineLayer.backgroundColor = tableView.separatorColor!.CGColor;
            layer.addSublayer(lineLayer);
        }

        var testView: UIView = UIView(frame:bounds)
        testView.layer.insertSublayer(layer, atIndex: 0)
        testView.backgroundColor = UIColor.clearColor()
        cell.backgroundView = testView
    }

}

这是我最后得出的另一种方法,它可能会帮助某些人。它使用预定义的颜色和宽度为每个部分绘制边框,而不改变单元格的其他属性。它不会给你一个圆形的部分(可能它可以相应地修改),但它提供了一个良好的控制程度的线绘制。该方法还解决了设备旋转问题

typedef enum CellBorderMask{
    CellBorderMaskLeft      = 1 << 0,
    CellBorderMaskRigth     = 1 << 1,
    CellBorderMaskTop       = 1 << 2,
    CellBorderMaskBottom    = 1 << 3
}CellBorderMask;




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

    CellBorderMask mask;
    if (indexPath.row == 0){
        mask |= CellBorderMaskTop;
    }

    if(indexPath.row == [tableView numberOfRowsInSection:indexPath.section] - 1) {
        mask |= CellBorderMaskBottom;
    }
    mask |= CellBorderMaskRigth | CellBorderMaskLeft;
    [self addBorder:mask forView:cell.contentView];
}

-(void)addBorder:(CellBorderMask)mask forView:(UIView *)view{
    float onePixel = (1.f / [UIScreen mainScreen].scale);
    float lineWidth = 1 * onePixel;
    CGColorRef cgBorderColor = [UIColor redColor].CGColor;


    CALayer *topBorder = [CALayer layer];
    CALayer *bottomBorder = [CALayer layer];
    CALayer *leftBorder = [CALayer layer];
    CALayer *rightBorder = [CALayer layer];

    //tag layers so it's possible to find and remove them later 
    topBorder.name = @"Border";
    bottomBorder.name = @"Border";
    leftBorder.name = @"Border";
    rightBorder.name = @"Border";

    //remove previously set border layers so they doesn't produce unwanted effect on orientation change
    [self cleanUpOldBorderLayers:view];

    topBorder.frame = CGRectMake(0.0f, 0.0f, view.bounds.size.width, lineWidth);
    topBorder.backgroundColor = cgBorderColor;

    bottomBorder.frame = CGRectMake(0.0f, view.bounds.size.height - lineWidth, view.bounds.size.width, lineWidth);
    bottomBorder.backgroundColor = cgBorderColor;

    leftBorder.frame = CGRectMake(0.0f, 0.0f, lineWidth, view.bounds.size.height);
    leftBorder.backgroundColor = cgBorderColor;

    rightBorder.frame = CGRectMake(view.bounds.size.width - lineWidth, 0.0f, lineWidth, view.bounds.size.height);
    rightBorder.backgroundColor = cgBorderColor;
    if(mask & CellBorderMaskTop){
        [view.layer addSublayer:topBorder];
    }
    if(mask & CellBorderMaskBottom){
        [view.layer addSublayer:bottomBorder];
    }
    if(mask & CellBorderMaskLeft){
        [view.layer addSublayer:leftBorder];
    }
    if(mask & CellBorderMaskRigth){
        [view.layer addSublayer:rightBorder];
    }
}

-(void)cleanUpOldBorderLayers:(UIView *)view{
    NSMutableArray *layerArray = [NSMutableArray new];
    for (CALayer *layer in view.layer.sublayers) {
        if([@"Border" isEqualToString:layer.name]){
            [layerArray addObject:layer];
        }
    }
    for (CALayer *layer in layerArray) {
        [layer removeFromSuperlayer];
    }
}


-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation{
    //need to trigger tableView:willDisplayCell: method on orientation change. 
    //Suggest a better method for this if there is one
    [self.tableView reloadData];
}
typedef枚举CellBorderMask{

CellBorderMaskLeft=1以下是Asad更新为swift 3的答案

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
    if (cell.responds(to: #selector(getter: UIView.tintColor))) {
        let cornerRadius: CGFloat = 5
        cell.backgroundColor = UIColor.clear
        let layer: CAShapeLayer  = CAShapeLayer()
        let pathRef: CGMutablePath  = CGMutablePath()
        let bounds: CGRect  = cell.bounds.insetBy(dx: 10, dy: 0)
        var addLine: Bool  = false
        if (indexPath.row == 0 && indexPath.row == tableView.numberOfRows(inSection: indexPath.section)-1) {
            pathRef.__addRoundedRect(transform: nil, rect: bounds, cornerWidth: cornerRadius, cornerHeight: cornerRadius)
        } else if (indexPath.row == 0) {
            pathRef.move(to: CGPoint(x:bounds.minX,y:bounds.maxY))
            pathRef.addArc(tangent1End: CGPoint(x:bounds.minX,y:bounds.minY), tangent2End: CGPoint(x:bounds.midX,y:bounds.minY), radius: cornerRadius)

            pathRef.addArc(tangent1End: CGPoint(x:bounds.maxX,y:bounds.minY), tangent2End: CGPoint(x:bounds.maxX,y:bounds.midY), radius: cornerRadius)
            pathRef.addLine(to: CGPoint(x:bounds.maxX,y:bounds.maxY))
            addLine = true;
        } else if (indexPath.row == tableView.numberOfRows(inSection: indexPath.section)-1) {

            pathRef.move(to: CGPoint(x:bounds.minX,y:bounds.minY))
            pathRef.addArc(tangent1End: CGPoint(x:bounds.minX,y:bounds.maxY), tangent2End: CGPoint(x:bounds.midX,y:bounds.maxY), radius: cornerRadius)

            pathRef.addArc(tangent1End: CGPoint(x:bounds.maxX,y:bounds.maxY), tangent2End: CGPoint(x:bounds.maxX,y:bounds.midY), radius: cornerRadius)
            pathRef.addLine(to: CGPoint(x:bounds.maxX,y:bounds.minY))

        } else {
            pathRef.addRect(bounds)
            addLine = true
        }
        layer.path = pathRef
        //CFRelease(pathRef)
        //set the border color
        layer.strokeColor = UIColor.lightGray.cgColor;
        //set the border width
        layer.lineWidth = 1
        layer.fillColor = UIColor(white: 1, alpha: 1.0).cgColor


        if (addLine == true) {
            let lineLayer: CALayer = CALayer()
            let lineHeight: CGFloat  = (1 / UIScreen.main.scale)
            lineLayer.frame = CGRect(x:bounds.minX, y:bounds.size.height-lineHeight, width:bounds.size.width, height:lineHeight)
            lineLayer.backgroundColor = tableView.separatorColor!.cgColor
            layer.addSublayer(lineLayer)
        }

        let testView: UIView = UIView(frame:bounds)
        testView.layer.insertSublayer(layer, at: 0)
        testView.backgroundColor = UIColor.clear
        cell.backgroundView = testView
    }

}

以下是Swift3版本的答案:

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
    let cornerRadius: CGFloat = 0.0
    cell.backgroundColor = UIColor.clear
    let layer: CAShapeLayer = CAShapeLayer()
    let pathRef: CGMutablePath = CGMutablePath()
    let bounds: CGRect = cell.bounds.insetBy(dx: 10, dy: 0)
    var addLine: Bool = false

    if indexPath.row == 0 && indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
        pathRef.__addRoundedRect(transform: nil, rect: bounds, cornerWidth: cornerRadius, cornerHeight: cornerRadius)
    } else if indexPath.row == 0 {
        pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.maxY))
        pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.minY), tangent2End: CGPoint(x: bounds.midX, y: bounds.minY), radius: cornerRadius)
        pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.minY), tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY), radius: cornerRadius)
        pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.maxY))
        addLine = true
    } else if indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
        pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.minY))
        pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.maxY), tangent2End: CGPoint(x: bounds.midX, y: bounds.maxY), radius: cornerRadius)
        pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.maxY), tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY), radius: cornerRadius)
        pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.minY))
    } else {
        pathRef.addRect(bounds)
        addLine = true
    }

    layer.path = pathRef
    layer.strokeColor = UIColor.black.cgColor
    layer.lineWidth = 0.5
    layer.fillColor = UIColor(white: 1, alpha: 1.0).cgColor

    if addLine == true {
        let lineLayer: CALayer = CALayer()
        let lineHeight: CGFloat = (1 / UIScreen.main.scale)
        lineLayer.frame = CGRect(x: bounds.minX, y: bounds.size.height - lineHeight, width: bounds.size.width, height: lineHeight)
        lineLayer.backgroundColor = tableView.separatorColor!.cgColor
        layer.addSublayer(lineLayer)
    }

    let backgroundView: UIView = UIView(frame: bounds)
    backgroundView.layer.insertSublayer(layer, at: 0)
    backgroundView.backgroundColor = UIColor.clear
    cell.backgroundView = backgroundView
}

我修改了上面的代码,现在这个代码为小节创建边框。 在swift4.2中测试

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
        let cornerRadius: CGFloat = 24
        cell.backgroundColor = .clear

        let layer = CAShapeLayer()
        let pathRef = CGMutablePath()
        let bounds = cell.bounds.insetBy(dx: 10, dy: 0)
        var addLine = false

        if indexPath.row == 0 && indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
            pathRef.__addRoundedRect(transform: nil, rect: bounds, cornerWidth: cornerRadius, cornerHeight: cornerRadius)
        } else if indexPath.row == 0 {
            pathRef.move(to: .init(x: bounds.minX, y: bounds.maxY))
            pathRef.addArc(tangent1End: .init(x: bounds.minX, y: bounds.minY), tangent2End: .init(x: bounds.midX, y: bounds.minY), radius: cornerRadius)
            pathRef.addArc(tangent1End: .init(x: bounds.maxX, y: bounds.minY), tangent2End: .init(x: bounds.maxX, y: bounds.midY), radius: cornerRadius)
            pathRef.addLine(to: .init(x: bounds.maxX, y: bounds.maxY))
            addLine = true
        } else if indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
            pathRef.move(to: .init(x: bounds.minX, y: bounds.minY))
            pathRef.addArc(tangent1End: .init(x: bounds.minX, y: bounds.maxY), tangent2End: .init(x: bounds.midX, y: bounds.maxY), radius: cornerRadius)
            pathRef.addArc(tangent1End: .init(x: bounds.maxX, y: bounds.maxY), tangent2End: .init(x: bounds.maxX, y: bounds.midY), radius: cornerRadius)
            pathRef.addLine(to: .init(x: bounds.maxX, y: bounds.minY))
        } else {
           //pathRef.addRect(bounds)

            let pathInnerRef = CGMutablePath()
            pathInnerRef.move(to: .init(x: bounds.minX, y: bounds.minY))
            pathInnerRef.addLine(to: .init(x: bounds.minX, y: bounds.maxY))

            pathInnerRef.move(to: .init(x: bounds.maxX, y: bounds.minY))
            pathInnerRef.addLine(to: .init(x: bounds.maxX, y: bounds.maxY))
            pathRef.addPath(pathInnerRef)
            addLine = true
        }

        layer.path = pathRef
        layer.fillColor = UIColor.clear.cgColor
        layer.strokeColor = UIColor.black.cgColor


        if (addLine == true) {
            let lineLayer = CALayer()
            let lineHeight = 1.0 / UIScreen.main.scale
            lineLayer.frame = CGRect(x: bounds.minX + 10, y: bounds.size.height - lineHeight, width: bounds.size.width - 10, height: lineHeight)
            lineLayer.backgroundColor = UIColor.clear.cgColor//tableView.separatorColor?.cgColor
            lineLayer.addBorder(edge: .left, color: UIColor.black, thickness: 2.0)
            lineLayer.addBorder(edge: .right, color: UIColor.black, thickness: 2.0)
            layer.addSublayer(lineLayer)
        }


        let testView = UIView(frame: bounds)
        testView.layer.insertSublayer(layer, at: 0)
        testView.backgroundColor = .clear

        cell.backgroundView = testView   
}
针对不同节中不同行数的工作修复
此答案解决了给定半径的问题,在节中有2个以上的单元格

半径:拐角半径->0.0

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
        let cornerRadius: CGFloat = 4.0
        cell.backgroundColor = UIColor.clear
        let layer: CAShapeLayer = CAShapeLayer()
        let pathRef: CGMutablePath = CGMutablePath()
        //dx leading an trailing margins
        let bounds: CGRect = cell.bounds.insetBy(dx: 15, dy: 0)
        var addLine: Bool = false
        
        if indexPath.row == 0 && indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
            pathRef.__addRoundedRect(transform: nil, rect: bounds, cornerWidth: cornerRadius, cornerHeight: cornerRadius)
        } else if indexPath.row == 0 {
            pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.maxY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.minY),
                           tangent2End: CGPoint(x: bounds.midX, y: bounds.minY),
                           radius: cornerRadius)
            
            pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.minY),
                           tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY),
                           radius: cornerRadius)
            pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.maxY))
            addLine = true
        } else if indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
            pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.minY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.midX, y: bounds.maxY),
                           radius: cornerRadius)
            
            pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY),
                           radius: cornerRadius)
            pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.minY))
        } else {
            pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.minY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.midX, y: bounds.maxY),
                           radius: 0.0)
            
            pathRef.move(to: CGPoint(x: bounds.maxX, y: bounds.maxY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY),
                           radius: 0.0)
            pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.minY))
            addLine = true
        }
        
        layer.path = pathRef
        layer.strokeColor = UIColor(fromHexString: "#D8D8D8")?.cgColor
        layer.lineWidth = 1.0
        layer.fillColor = UIColor.clear.cgColor
        
        if addLine == true {
            let lineLayer: CALayer = CALayer()
            let lineHeight: CGFloat = (1 / UIScreen.main.scale)
            lineLayer.frame = CGRect(x: bounds.minX, y: bounds.size.height - lineHeight, width: bounds.size.width, height: lineHeight)
            lineLayer.backgroundColor = UIColor.clear.cgColor
            layer.addSublayer(lineLayer)
        }
        
        let backgroundView: UIView = UIView(frame: bounds)
        backgroundView.layer.insertSublayer(layer, at: 0)
        backgroundView.backgroundColor = .clear
        cell.backgroundView = backgroundView
        
    }

看到这个:@HinataHyuga-我已经检查过了-它把边框放在整个桌子上,而不是每个部分。@itsautcode你找到解决方案了吗?这很好!如果你想改变背景颜色,请将
layer.fillColor
更改为所需的任何颜色。如果超过两行,这将无法覆盖HeadService窗口:问题出现在最后一个else语句中-它生成一个矩形矩形–>4条边框线如果我在边框中添加了阴影,那么每个单元格后都会出现分隔符,如何消除此现象?如何生成阴影?有人能帮我解决吗?如果超过2行,则不起作用:问题出现在最后一个else语句中-它生成一个矩形ular rect–>4 border linesHow我可以给阴影吗?有人能帮我吗?如果超过2行,则不起作用:问题在最后一条else语句中-它生成一个矩形rect–>4 border linesHow我可以给阴影吗?有人能帮我吗?如果该节有标题,则解决方案不起作用。我如何为此添加阴影卡片。如果我申请顶部和底部,因为“dy:0”而不会出现
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
        let cornerRadius: CGFloat = 4.0
        cell.backgroundColor = UIColor.clear
        let layer: CAShapeLayer = CAShapeLayer()
        let pathRef: CGMutablePath = CGMutablePath()
        //dx leading an trailing margins
        let bounds: CGRect = cell.bounds.insetBy(dx: 15, dy: 0)
        var addLine: Bool = false
        
        if indexPath.row == 0 && indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
            pathRef.__addRoundedRect(transform: nil, rect: bounds, cornerWidth: cornerRadius, cornerHeight: cornerRadius)
        } else if indexPath.row == 0 {
            pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.maxY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.minY),
                           tangent2End: CGPoint(x: bounds.midX, y: bounds.minY),
                           radius: cornerRadius)
            
            pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.minY),
                           tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY),
                           radius: cornerRadius)
            pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.maxY))
            addLine = true
        } else if indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
            pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.minY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.midX, y: bounds.maxY),
                           radius: cornerRadius)
            
            pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY),
                           radius: cornerRadius)
            pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.minY))
        } else {
            pathRef.move(to: CGPoint(x: bounds.minX, y: bounds.minY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.minX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.midX, y: bounds.maxY),
                           radius: 0.0)
            
            pathRef.move(to: CGPoint(x: bounds.maxX, y: bounds.maxY))
            pathRef.addArc(tangent1End: CGPoint(x: bounds.maxX, y: bounds.maxY),
                           tangent2End: CGPoint(x: bounds.maxX, y: bounds.midY),
                           radius: 0.0)
            pathRef.addLine(to: CGPoint(x: bounds.maxX, y: bounds.minY))
            addLine = true
        }
        
        layer.path = pathRef
        layer.strokeColor = UIColor(fromHexString: "#D8D8D8")?.cgColor
        layer.lineWidth = 1.0
        layer.fillColor = UIColor.clear.cgColor
        
        if addLine == true {
            let lineLayer: CALayer = CALayer()
            let lineHeight: CGFloat = (1 / UIScreen.main.scale)
            lineLayer.frame = CGRect(x: bounds.minX, y: bounds.size.height - lineHeight, width: bounds.size.width, height: lineHeight)
            lineLayer.backgroundColor = UIColor.clear.cgColor
            layer.addSublayer(lineLayer)
        }
        
        let backgroundView: UIView = UIView(frame: bounds)
        backgroundView.layer.insertSublayer(layer, at: 0)
        backgroundView.backgroundColor = .clear
        cell.backgroundView = backgroundView
        
    }