
[英]UIButton added into content view of UITableViewCell only appears when cell is selected
[英]Content of UITableViewCell Invisible when cell is added from another view controller
我遇到一个奇怪的问题,即将UITableViewCell添加到当前不可见但先前已加载的另一个TableViewController的tableView中。 问题是该单元格已添加到tableView中,但是一旦我转到该视图控制器,该单元格的内容将为空白:
tableView的CellForRowAtIndexPath,其cell contentView显示为不可见:
- (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];
}
}
该视图控制器使用情节提要中的自动布局进行布局。 谢谢!
将数据添加到数据源后,尝试刷新表视图。
您必须添加此行将可以尝试添加[tableView reloadData];
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