用Category类别来设置TableViewCell的背景图

直接上转载代码吧！

// UITableViewCellExt.h

@interface UITableViewCell (UITableViewCellEx)
- (void)setBackgroundImage:(UIImage *)p_w_picpath;
- (void)setBackgroundImageByName:(NSString *)p_w_picpathName;
@end

#import "UITableViewCellExt.h"

@implementation UITableViewCell (UITableViewCellExt)
- (void)setBackgroundImage:(UIImage*)p_w_picpath
{
    UIImageView *p_w_picpathView = [[UIImageView alloc] initWithImage:p_w_picpath];
    p_w_picpathView.contentMode = UIViewContentModeCenter;
    self.backgroundView = p_w_picpathView;
    [p_w_picpathView release];
}

- (void)setBackgroundImageByName:(NSString *)p_w_picpathName
{
    [self setBackgroundImage:[UIImage p_w_picpathNamed:p_w_picpathName]];
}
@end

调用示例：

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    
    static NSString *CellIdentifier = @"Cell";   
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
        
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
        
        [cell setBackgroundImageByName:@"text-background.png"];        
    }   
    return cell;
}