为 UITableView 设置三边边框 - IOS

Question

对于我的设计规范，我的表格视图应该只有顶部、左侧和右侧三个边框。我已经使用以下代码添加了它....

CGSize mainViewSize = menu_table.bounds.size;
CGFloat borderWidth = 1;
UIColor *borderColor = [UIColor lightGrayColor];
UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, borderWidth, mainViewSize.height)];
UIView *rightView = [[UIView alloc] initWithFrame:CGRectMake(mainViewSize.width - borderWidth, 0, borderWidth, mainViewSize.height)];
UIView *topView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, mainViewSize.width, borderWidth)];
leftView.opaque = YES;
rightView.opaque = YES;
topView.opaque = YES;
leftView.backgroundColor = borderColor;
rightView.backgroundColor = borderColor;
topView.backgroundColor = borderColor;

// for bonus points, set the views' autoresizing mask so they'll stay with the edges:
leftView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleRightMargin;
rightView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleLeftMargin;
topView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin;

[menu_table addSubview:leftView];
[menu_table addSubview:rightView];
[menu_table addSubview:topView];

它工作正常，但是当我滚动表格时，添加的子视图也向上移动。我不确定为什么子视图随着单元格移动而不是它应该用表格修复，知道问题是什么以及如何用表格视图大小修复它。谢谢。

Answer 1

我不太了解，但我能想到的最简单的方法是在您的表格视图中添加 3 个内容视图，如下所示：

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
    //add left view
    UIView *vwLeft=[[UIView alloc] initWithFrame:CGRectMake(X_POS, Y_POS, LINE_WIDTH, CELL_HEIGHT)];
    [vwLeft setBackgroundColor:[UIColor redColor]];
    [[cell contentView] addSubview:vwLeft];
    [vwLeft release];

     //add right view
    UIView *vwRight=[[UIView alloc] initWithFrame:CGRectMake(X_POS, Y_POS, LINE_WIDTH, CELL_HEIGHT)];
    [vwRight setBackgroundColor:[UIColor blueColor]];
    [[cell contentView] addSubview:vwRight];
    [vwRight release];

    //add top view
    UIView *vwTop=[[UIView alloc] initWithFrame:CGRectMake(X_POS, Y_POS, LINE_WIDTH, CELL_HEIGHT)];
    [vwTop setBackgroundColor:[UIColor yellowColor]];
    [[cell contentView] addSubview:vwTop];
    [vwTop release];

}
return cell;

}

享受编程！