UITableViewCell的內容當從另一個視圖控制器添加單元格時不可見

Question

我遇到了一個奇怪的問題，即將UITableViewCell添加到另一個TableViewController的tableView，該tableView當前不可見，但之前已加載。該問題是該小區被添加到的tableView但單元格的內容是空白的，一旦我去那個視圖控制器：

這是被如何添加單元格：

的cellForRowAtIndexPath其細胞內容查看所述的tableView的被顯示出來隱形：

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

      LYRConversation *conversation = [_dataSource objectAtIndex:indexPath.row]; 

      ConversationListCell *cell = (ConversationListCell *)[tableView dequeueReusableCellWithIdentifier:CELL_REUSE_ID forIndexPath:indexPath]; 

      [self configureCell:cell atIndexPath:indexPath conversation:conversation]; 

      return cell; 

} 

-(void)configureCell:(ConversationListCell *)conversationCell atIndexPath:(NSIndexPath *)indexPath conversation:(LYRConversation *)conversation 
{ 
    [conversationCell updateAvatarWithUrl:[NSURL URLWithString:[self avatarStringUrlForConversation:conversation]]]; 
    [conversationCell updateTitle:[self titleForConversation:conversation]]; 
    [conversationCell updateUnreadMessageIndicator:conversation]; 
    NSArray *otherParticipants = [[PersistentCache sharedCache] cachedUsersForUserIDs:conversation.participants]; 
    conversationCell.preview.text = [((PFUser *)otherParticipants.lastObject) objectForKey:@"jobTitle"]; 
    [UIView updateStatusIndicatorOfConversation:otherParticipants statusIndicator:conversationCell.status]; 
} 


-(void)updateAvatarWithUrl:(NSURL *)avatarUrl 
{ 
    if (avatarUrl != nil) { 
     downloadImageThenSetForImageView(self.avatar, avatarUrl); 
    } 
} 

-(void)updateTitle:(NSString *)title 
{ 
    self.title.text = title; 
} 

-(void)updateUnreadMessageIndicator:(LYRConversation *)conversation 
{ 
    if (conversation.lastMessage.isUnread) { 
     [_unreadMessageIndicator setImage:[ConversationListCell unreadBlue]]; 
    } 
    else { 
     [_unreadMessageIndicator setImage:[ConversationListCell unreadGray]]; 
    } 
} 

+(void)updateStatusIndicatorOfConversation:(NSArray<PFUser *> *)users statusIndicator:(UIView *)view 
{ 
    int statusValue = ((NSNumber *)[users.firstObject objectForKey:@"status"]).intValue; 
    if (statusValue == 1) { 
     view.backgroundColor = [UIColor PNGInOffice]; 
    } 
    else if(statusValue == 2){ 
     view.backgroundColor = [UIColor PNGBusy]; 
    } 
    else if(statusValue == 3){ 
     view.backgroundColor = [UIColor PNGAway]; 
    } 
} 

此視圖控制器在故事板中使用自動佈局進行佈局。謝謝！

Answer 1

嘗試在刷新表格視圖後，將數據添加到數據源中。

Answer 2

您必須添加此行纔會嘗試添加 [tableView reloadData];