在自定義TableViewCell上設置圖像

Question

我想知道如何將圖像放在自定義單元格的背景上

我使用的代碼就是這個，但是這會將所有表格設置為同一張圖片，我希望每個單元格都有自己的背景，具體取決於誰是消息所有者，我希望您能對我有所幫助！

- (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

這行對我來說不太好：

if (usernameText=userLabel)

應該是：

if ([usernameText isEqualToString:userLabel.text])

Answer 2

嘗試這個，

tableView.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"chat1@2x.png"]];

要么，

cell.backgroundView = [[UIImageView分配] initWithImage：[UIImage imageNamed：@“ chat1@2x.png”]]];