Ios 单击用户名并转到配置文件

我使用Parse作为我的后端，有一个主视图，其中所有用户的照片都将显示，有点像流，每个单元格都有一个带有用户用户名的标题，您可以单击该标题并转到他们的个人资料。但是，我不知道如何访问用户信息并将其带到下一个视图。。这是到目前为止我的代码

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
    static NSString *headerIdentifier = @"headerIdentifier";
    UITableViewHeaderFooterView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:headerIdentifier];

    if (headerView == nil) {
        headerView = [[UITableViewHeaderFooterView alloc] initWithFrame:CGRectMake( 0.0f, 0.0f, self.view.bounds.size.width, 44.0f)];


        //Container to hold everything.
        self.containerView = [[UIView alloc] initWithFrame:CGRectMake( 0.0f, 0.0f, self.view.bounds.size.width, 44)];
        self.containerView.backgroundColor = [UIColor clearColor];
        [headerView.contentView addSubview:containerView];


        UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
        [button addTarget:self
                   action:@selector(viewProfile: user:)
         forControlEvents:UIControlEventTouchUpInside];
        [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        button.frame = CGRectMake(8, 6, 100, 30);

        //Setting the username to button.
        PFObject *owner = [self.userPhotos objectAtIndex:section];
        PFUser *user = [owner objectForKey:@"user"];
        [user fetch];
        self.usernameHolder = user.username;
        [button setTitle:self.usernameHolder forState:UIControlStateNormal];

        [containerView addSubview:button];
    }

    return headerView;
}

- (void)viewProfile:(UIButton *)button user:(PFUser *)user {
    AccountView *accountView = [[AccountView alloc] init];
    [accountView setUser:user];
    [self.navigationController pushViewController:accountView animated:YES];
}

---

当我在accountView上执行NSLog时，它返回为null，我非常困惑

我认为一个问题是按钮没有将用户参数中的任何内容传递给

-viewProfile:user

方法

虽然我不喜欢用“幻数”来做这类事情，但您可能需要做的是使用按钮上的

.tag

属性作为索引，然后通过

用户照片

查找

用户。所以

加载项
-tableView:viewForHeaderInSection:

button.tag = section

改变

[button addTarget:self action:@selector(viewProfile: user:) forControlEvents:UIControlEventTouchUpInside];

到

并将
-viewProfile:user:
方法替换为

- (void)viewProfile:(UIButton *)button {
  AccountView *accountView = [[AccountView alloc] init];
  PFObject *owner = [self.userPhotos objectAtIndex:button.tag];
  PFUser *user = [owner objectForKey:@"user"];
  [accountView setUser:user];
  [self.navigationController pushViewController:accountView animated:YES];
}

您可能需要也可能不需要再次获取该用户-我不确定在获取该用户时，Parse SDK是否会在userPhotos中更新该用户。如果您在查询中使用
。includeKey（“用户”）
来获取用户照片，您也可以完全避免抓取。
我的朋友，我想感谢您的帮助，它非常有效。@DerekSaunders如果它对您有效，您能接受答案吗？
- (void)viewProfile:(UIButton *)button {
  AccountView *accountView = [[AccountView alloc] init];
  PFObject *owner = [self.userPhotos objectAtIndex:button.tag];
  PFUser *user = [owner objectForKey:@"user"];
  [accountView setUser:user];
  [self.navigationController pushViewController:accountView animated:YES];
}