关于绘制单元格矩形的解决方案的浅谈 [英] Light about a solution to draw cell rectangles

问题描述

阅读这篇文章后，我尝试使用此解决方案.这是我的代码，在tableViewDelegate方法中:

After reading this post, i tried to use this solution. Here is my code, in the tableViewDelegate methods:

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
   CustomCellBackgroundView *customBackground = [CustomCellBackgroundView alloc];

    [customBackground setBorderColor:[UIColor blackColor]];
    [customBackground setFillColor:[UIColor redColor]];
    [customBackground setPosition:0]; //i'll deal with that later

    [cell setSelectedBackgroundView:customBackground];
    [customBackground release];


    UIImageView* selectedBackgroundCell = [[[UIImageView alloc] initWithFrame:CGRectNull] autorelease];
    [selectedBackgroundCell setImage:[UIImage imageNamed:@"cell_bg_50_hover.png"]];
    [customBackground drawRect:selectedBackgroundCell.frame];

    [cell setSelectedBackgroundView:selectedBackgroundCell];

    //standard background color
    [cell setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"cell_bg_50.png"]]];
}

但是不幸的是，它没有任何改变.你知道我在做什么错吗?

But unfortunately it doesn't change anything. Do you know what I am doing wrong ?

推荐答案

我相信无论何时创建视图，都应该为此指定一些框架. 因此，为自定义背景和背景都指定框架CGRectZero....

I believe that whenever make views then you should specify some frame for that. So specify frame CGRectZero for both custom background and background....

下面的内容在我测试时对我有用.

Following just work for me when I tested.

    UIView *bkview = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];

    bkview.backgroundColor = [UIColor redColor];

    cell.selectedBackgroundView = bkview;

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