Question

正如我UITableViewCell这样的部分一样......

使用此代码......

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

if (indexPath.section == 0) {
    //Border Across 1st Section
    if ([cell respondsToSelector:@selector(tintColor)]) {
        CGFloat cornerRadius = 3.f;
        cell.backgroundColor = UIColor.clearColor;
        self.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;
        }
        self.layer.path = pathRef;
        CFRelease(pathRef);
        //set the border color
        self.layer.strokeColor = UNDERLINE_COLOR_NEXT.CGColor;
        //set the border width
        self.layer.lineWidth = 1;
        self.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;
            [self.layer addSublayer:lineLayer];
        }

        UIView *testView = [[UIView alloc] initWithFrame:bounds];
        [testView.layer insertSublayer:self.layer atIndex:0];
        testView.backgroundColor = UIColor.clearColor;
        cell.backgroundView = testView;
    }
}
}

在Tableview的委托方法中，我为每个单元格添加了CAShapeLayer的子图层......就像这样......

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self.view endEditing:YES];

if (indexPath.section == 0) {

    UITableViewCell *lCell = [tableView cellForRowAtIndexPath:self.lastIndexPath];
    CALayer *lLayer = [[CALayer alloc]init];
    lLayer.frame = CGRectInset(lCell.bounds,10,0);
    lLayer.backgroundColor = [UIColor colorWithWhite:1.f alpha:1.f].CGColor;
    [lCell.layer addSublayer:lLayer]; //Last indexPath white

    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    CALayer *cLayer = [[CALayer alloc]init];
    cLayer.frame = CGRectInset(cell.bounds,10,0);
    cLayer.backgroundColor = navBarColor.CGColor;
    [cell.layer addSublayer:cLayer]; //Current Index Yellow

    self.lastIndexPath = indexPath;

}

但是，当我点击任何一个单元格时，图层覆盖了单元格的子视图我错了，请设置我的方向

Answer 1

问题可能在于此行[self.layer addSublayer:cLayer];您需要在单元格中添加图层。它应该是。

[cell.layer addSublayer:cLayer];

您需要为当前和之前的选择设置[cell.layer addSublayer:cLayer];。

修改

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { UIView *selectedView = [[UIView alloc] initWithFrame:cell.bounds]; selectedView.backgroundColor = navBarColor.CGColor; cell.selectedBackgroundView = selectedView; }

现在删除您正在设置颜色并删除它的didSelect内的代码。

Answer 2

首先是您的单元格背景视图，给出标记以便像这样识别

必须添加此行

 testView.tag = 9999;

看起来像

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
  UIView *testView = [[UIView alloc] initWithFrame:bounds];
  [testView.layer insertSublayer:self.layer atIndex:0];
  testView.backgroundColor = UIColor.clearColor;
  testView.tag = 9999;
  cell.backgroundView = testView;

}

现在实现didSelectRow方法就是这样

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self.view endEditing:YES];

if (indexPath.section == 0) {

    UITableViewCell *lCell = [tableView cellForRowAtIndexPath:self.lastIndexPath];
    UIView *bgView = [[lCell backgroundView] viewWithTag:9999]
    CAShapeLayer *layer = (CAShapeLayer *)bgView.layer.sublayers[0];
    layer.fillColor = [UIColor colorWithWhite:1.f alpha:1.f].CGColor //Last indexPath white


    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    UIView *bgView = [[cell backgroundView] viewWithTag:9999]
    CAShapeLayer *layer = (CAShapeLayer *)bgView.layer.sublayers[0];
    layer.fillColor = navBarColor.CGColor  //Current Index Yellow


    self.lastIndexPath = indexPath;

}
}

Answer 3

如果你要做的只是改变当前所选单元格的颜色，那么有一个更简单的解决方案。您可以做的是将所有UITableViewCell的突出显示状态设置为单独的UIView。只需单击单元格中的插座，然后将连接从UITableViewCell拖放到UIView（查看要从中拖出的插座的屏幕截图）。这将设置所选单元格以在您设置的视图上进行，从而更改背景颜色，使单元格内的所有元素保持不变。通过这种方式，您不必处理由于细胞重复使用而可能出现的任何颜色变化等

Answer 4

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self.view endEditing:YES];

if (indexPath.section == 0) {

UITableViewCell *lCell = [tableView cellForRowAtIndexPath:self.lastIndexPath];
UIView *bgView = [[lCell backgroundView] viewWithTag:9999]
CAShapeLayer *layer = (CAShapeLayer *)bgView.layer.sublayers[0];
layer.fillColor = [UIColor colorWithWhite:1.f alpha:1.f].CGColor //Last indexPath white


UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
UIView *bgView = [[cell backgroundView] viewWithTag:9999]
CAShapeLayer *layer = (CAShapeLayer *)bgView.layer.sublayers[0];
layer.fillColor = navBarColor.CGColor  //Current Index Yellow


self.lastIndexPath = indexPath;

 }
}

向UITableViewCell添加不同的子图层覆盖单元格

4 个答案: