objective-c - 在自定义 TableViewCell 上设置图像

Question

我想知道如何在自定义单元格的背景上放置图像

我使用的代码是这个，但这会将所有表格设置为相同的图像我希望每个单元格都有自己的背景，具体取决于消息所有者是谁我希望你能帮助我，这让我很痛苦!

- (UITableViewCell *)tableView:(UITableView *)myTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *cell = (UITableViewCell *)[self.messageList dequeueReusableCellWithIdentifier:@"ChatListItem"];
    if (cell == nil) {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ChatListItem" owner:self options:nil];
        cell = (UITableViewCell *)[nib objectAtIndex:0];
    }

    NSDictionary *itemAtIndex = (NSDictionary *)[messages objectAtIndex:indexPath.row];
    UILabel *textLabel = (UILabel *)[cell viewWithTag:1];
    textLabel.text = [itemAtIndex objectForKey:@"text"];
    UILabel *userLabel = (UILabel *)[cell viewWithTag:2];
    userLabel.text = [itemAtIndex objectForKey:@"user"];

    if(usernameText=userLabel){
        UIImageView* img = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"chat2@2x.png"]];
        [cell setBackgroundView:img];
        [img release];        
    }
    else{
        UIImageView* img = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"chat1@2x.png"]];
        [cell setBackgroundView:img];
        [img release];

    }

    return cell;
}

Answer 1

这条线对我来说不太好:

if (usernameText=userLabel)

也许应该是:

if ([usernameText isEqualToString:userLabel.text])