ios - 为 UITableViewCell 添加不同的子层覆盖 Cell 的 subview

Question

当我像这样限制 UITableViewCell 的部分时...

有了这个代码...

- (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(delegate)方法中，我为每个单元格向 CAShapeLayer 添加了子层......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;

}

但是当我点击任何单元格时，层会覆盖单元格的 subview 如果我错了请设置我的方向

Answer 1

问题可能出在这一行 [self.layer addSublayer:cLayer]; 您需要在单元格中添加图层。应该是这样的。

[cell.layer addSublayer:cLayer];

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

编辑:

- (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 didSelect 中设置颜色并将其删除的代码。