Прокрутка UITableView негладкая с несколькими настраиваемыми ячейками

Ниже приведен полный код для ячейки для строки по пути индекса. Здесь отображается таблица как несколько пользовательских ячеек, которые должны возвращаться на основе значений. Прокрутка вида таблицы запаздывает много .. Я использую YYWebimage для загрузки изображений и содержимое ячейки сохраняет изменения, на которых необходимо отобразить высоту табличной высоты строки,Прокрутка UITableView негладкая с несколькими настраиваемыми ячейками

- (UITableViewCell *)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath 
{ 
    KVembedLinkTableViewCell* KVCell = [tableView dequeueReusableCellWithIdentifier:@"Link"]; 

    [KVCell flushCell]; 
    [KVCell layoutIfNeeded]; 
    _postDict = [NSMutableDictionary dictionaryWithDictionary:[cardDetailsArray objectAtIndex:indexPath.row]]; 
    NSLog(@"feedstimeline postdict: %@",_postDict); 
    [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
    NSArray *embedlist = [NSArray new]; 
    embedlist = [_postDict valueForKeyPath:@"recentpost.embedlist"]; 
    NSArray *medialist = [NSArray new]; 
    medialist = [_postDict valueForKeyPath:@"recentpost.medialist"]; 
    KVCell.embededDetails = _postDict; 
    KVCell.embedlist = embedlist; 

    NSString *discription = [NSString stringWithFormat:@"%@",[_postDict valueForKeyPath:@"recentpost.staticdata.contenttext"]]; 
    discription = [CVUtilityManager stripEmptyTags:discription]; 
    KVCell.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
    [KVCell.userDescription setText:discription]; 
    NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
    KVCell.userDescriptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
    [KVCell laodUserDescription:attr]; 
    [KVCell.userDescription updateConstraints]; 
    [KVCell.userDescription setNeedsLayout]; 
    [KVCell.userDescription layoutIfNeeded]; 
    [KVCell setLikeDelegate:self]; 
    NSString *typeOfCardString = cardTypeArray[indexPath.row]; 
    if ([CVUtilityManager stringIsNull:typeOfCardString]) typeOfCardString = @"UNKNOWN"; 
    _typeOfCard = [self defineCardTypeFromType:typeOfCardString]; 
    switch (_typeOfCard) { 

     case VIDEO: { 

      if (embedlist.count > 0) { 
       if (embedlist[0] != nil) { 
        [KVCell loadVideoDetails:[NSMutableDictionary dictionaryWithDictionary:embedlist[0]]]; 
       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 

     } break; 
     case UNKNOWN: 
     case TEXT: { 
      [KVCell loadTextWithString]; 
      KVCell.linkViewHeight.constant = 0; 
      KVCell.multiTableViewHeight.constant = 0; 
      [KVCell laodCellContents]; 
      [KVCell.linkContentView layoutIfNeeded]; 
      [KVCell.linkContentView updateConstraints]; 
      [KVCell layoutIfNeeded]; 
      [KVCell setNeedsLayout]; 
      [KVCell updateConstraints]; 
      NSLog(@"card type TEXT"); 
     }break; 
     case EMBEDFB: { 
      if (embedlist.count > 0) { 
       if (embedlist[0] != nil) { 
        NSString *URLFB = [embedlist[0] objectOrNilForKey:@"url"]; 
        [KVCell loadFaceBookDetails:[CVUtilityManager neutraliseString:URLFB] withVideoButtonStatus:NO]; 
       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 

     } break; 
     case EMBEDINSTAGRAM: { 

      if (embedlist.count > 0) { 
       if (embedlist[0] != nil) { 
        NSString *URLINSTA = [embedlist[0] objectOrNilForKey:@"url"]; 
        [KVCell loadInstagramDetails:[CVUtilityManager neutraliseString:URLINSTA]]; 
       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 

     } break; 

     case EMBEDPHOTO: { 

      if (embedlist.count > 0) { 
       if (embedlist[0] != nil) { 
        KVCell.linkViewHeight.constant = 253; 
        [KVCell embedPhoto:[NSMutableDictionary dictionaryWithDictionary:embedlist[0]]]; 

       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 
      KVCell.multiTableViewHeight.constant = 0; 
      KVCell.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCell.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCell.userDescriptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCell laodUserDescription:attr]; 
      [KVCell.userDescription updateConstraints]; 
      [KVCell.userDescription setNeedsLayout]; 
      [KVCell.userDescription layoutIfNeeded]; 


      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 
     } break; 
     case KANVZPOST: 
     case LINK: { 

      if (embedlist.count > 0) { 
       if (embedlist[0] != nil) { 
        KVCell.linkViewHeight.constant = 253; 
        [KVCell loadLinkView:[NSMutableDictionary dictionaryWithDictionary:embedlist[0]]]; 

       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 
      KVCell.multiTableViewHeight.constant = 0; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 

     } break; 
     case SOUND_CLOUD_AUDIO: 
     case MULTI_SOUND_CLOUD_AUDIO: { 
      NSLog(@"card type MULTI_SOUND_CLOUD_AUDIO"); 
      if (embedlist.count > 0) { 
       [KVCell loadAudioLinksWithArray:embedlist]; 
       KVCell.multiTableViewHeight.constant = embedlist.count * 132.00; 
       KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.multiTableViewHeight.constant = 0; 
      KVCell.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCell.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCell.userDescriptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCell laodUserDescription:attr]; 
      [KVCell.userDescription updateConstraints]; 
      [KVCell.userDescription setNeedsLayout]; 
      [KVCell.userDescription layoutIfNeeded]; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 


     } break; 
     case EMBEDRICH: 
     case MULTIPLE_LINK: { 
      if (embedlist.count > 0) { 
       [KVCell loadMultiLinksWithArray:embedlist]; 
       KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 


     } break; 
     case FACEBOOK_VIDEO_CARD: { 
      if (embedlist.count > 0) { 
       if (embedlist[0] != nil) { 
        NSString *URLFB = [embedlist[0] objectOrNilForKey:@"url"]; 
        [KVCell loadFaceBookDetails:[CVUtilityManager neutraliseString:URLFB] withVideoButtonStatus:YES]; 

       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 

      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 

     } break; 
     case AUDIO: { 
      [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
      KVembedAudio 
      * KVCellAUDIO = [tableView dequeueReusableCellWithIdentifier:@"Audio" forIndexPath:indexPath]; 
      KVCellAUDIO.embededDetails = _postDict; 
      [KVCellAUDIO setLikeDelegate:self]; 
      KVCellAUDIO.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCellAUDIO.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCellAUDIO.userDescrptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCellAUDIO laodUserDescription:attr]; 
      [KVCellAUDIO.userDescription updateConstraints]; 
      [KVCellAUDIO.userDescription setNeedsLayout]; 
      [KVCellAUDIO.userDescription layoutIfNeeded]; 

      [KVCellAUDIO performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:true]; 
      [KVCellAUDIO.contentView layoutIfNeeded]; 
      NSLog(@"card type AUDIO"); 
      return KVCellAUDIO; 
     } break; 
     case PHOTO: { 
      KVCell.embedlist = medialist; 
      if (medialist.count > 0) { 
       if (medialist[0] != nil) { 

        [KVCell uploadPhoto:[NSMutableDictionary dictionaryWithDictionary:medialist[0]]]; 

       }else 
        KVCell.linkViewHeight.constant = 0; 
      }else 
       KVCell.linkViewHeight.constant = 0; 
      KVCell.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCell.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCell.userDescriptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCell laodUserDescription:attr]; 
      [KVCell.userDescription updateConstraints]; 
      [KVCell.userDescription setNeedsLayout]; 
      [KVCell.userDescription layoutIfNeeded]; 
      [KVCell performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 
     } break; 

     case MULTIPLE_EMBEDPHOTO: { 
      NSLog(@"card type MULTIPLE_EMBEDPHOTO"); 
      [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
      NSArray *mediaList = [[_postDict objectOrNilForKey:@"recentpost"] objectOrNilForKey:@"embedlist"]; 
      KVembedPhotoMultiple 
      * KVCellPhoto = [tableView dequeueReusableCellWithIdentifier:@"Photo Multiple" forIndexPath:indexPath]; 
      [KVCellPhoto flushCell]; 
      KVCellPhoto.embededDetails = _postDict; 
      if (mediaList.count>0) { 
       [KVCellPhoto loadEmbedPhotos:mediaList]; 
      } 
      [KVCellPhoto setLikeDelegate:self]; 
      KVCellPhoto.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCellPhoto.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCellPhoto.userDescrptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCellPhoto laodUserDescription:attr]; 
      [KVCellPhoto.userDescription updateConstraints]; 
      [KVCellPhoto.userDescription setNeedsLayout]; 
      [KVCellPhoto.userDescription layoutIfNeeded]; 

      [KVCellPhoto performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 
      [KVCellPhoto.contentView layoutIfNeeded]; 
      return KVCellPhoto; 
     } break; 

     case MULTIPLE_PHOTO: { 
      NSLog(@"card type MULTIPLE_PHOTO"); 
      [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
      NSArray *mediaList = [[_postDict objectOrNilForKey:@"recentpost"] objectOrNilForKey:@"medialist"]; 
      NSLog(@"mediaList %@",mediaList); 
      KVembedPhotoMultiple 
      * KVCellPhoto = (KVembedPhotoMultiple *)[tableView dequeueReusableCellWithIdentifier:@"Photo Multiple" forIndexPath:indexPath]; 
      [KVCellPhoto flushCell]; 
      KVCellPhoto.embededDetails = _postDict; 
      if (mediaList.count>0) { 
       [KVCellPhoto loadUploadedPhotos:mediaList]; 
      } 
      [KVCellPhoto setLikeDelegate:self]; 
      KVCellPhoto.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCellPhoto.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCellPhoto.userDescrptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCellPhoto laodUserDescription:attr]; 
      [KVCellPhoto.userDescription updateConstraints]; 
      [KVCellPhoto.userDescription setNeedsLayout]; 
      [KVCellPhoto.userDescription layoutIfNeeded]; 

      [KVCellPhoto performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 
      [KVCellPhoto.contentView layoutIfNeeded]; 
      return KVCellPhoto; 
     } break; 
     case EMBED_MUL_VIDEO: { 
      [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
      KVembedVideoMultipleTableViewCell 
      * KVCellVideo = [tableView dequeueReusableCellWithIdentifier:@"Video Multiple" forIndexPath:indexPath]; 
      KVCellVideo.embededDetails = _postDict; 
      [KVCellVideo setLikeDelegate:self]; 
      [KVCellVideo performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 
      [KVCellVideo.contentView layoutIfNeeded]; 
      NSLog(@"card type EMBED_MUL_VIDEO"); 
      return KVCellVideo; 
     } break; 
     case EMBEDTWEET: 
     case EMBED_MUL_TWEET: { 
      NSLog(@"card type EMBED_MUL_TWEET"); 
      [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
      KVembedTweetMultiple* KVCellTweet = [tableView dequeueReusableCellWithIdentifier:@"Tweet Multiple" forIndexPath:indexPath]; 
      [KVCellTweet setLikeDelegate:self]; 
      KVCellTweet.embededDetails = _postDict; 
      KVCellTweet.embedlist = embedlist; 
      [KVCellTweet.userDescription setText:discription]; 
      KVCellTweet.userDescriptionHeight.constant = [CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCellTweet laodUserDescription:attr]; 
      [KVCellTweet.userDescription updateConstraints]; 
      [KVCellTweet.userDescription layoutIfNeeded]; 

      [KVCellTweet loadTweets]; 

      [KVCellTweet performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:TRUE]; 
      [KVCellTweet.contentView updateConstraints]; 
      [KVCellTweet.contentView layoutIfNeeded]; 
      [KVCellTweet layoutIfNeeded]; 
      [KVCellTweet updateConstraints]; 
      return KVCellTweet; 

     } break; 
     case EMBED_MUL_AUDIO: { 
      NSLog(@"card type EMBED_MUL_AUDIO"); 
      [_postDict setObject:indexPath forKey:KEY_INDEXPATH]; 
      KVembedMultiAudio* KVCellAudio = (KVembedMultiAudio*)[tableView dequeueReusableCellWithIdentifier:@"EmbedMultiAudio" forIndexPath:indexPath]; 
      KVCellAudio.embededDetails = _postDict; 
      [KVCellAudio setLikeDelegate:self]; 
      KVCellAudio.userDescription.preferredMaxLayoutWidth = _timeLineTableView.bounds.size.width -16; 
      [KVCellAudio.userDescription setText:discription]; 
      NSAttributedString *attr = [CVUtilityManager UserDescription:discription]; 
      KVCellAudio.userDescrptionHeight.constant =[CVUtilityManager sizeForLabel:KVCell.userDescription withAttributedString:attr]; 
      [KVCellAudio laodUserDescription:attr]; 
      [KVCellAudio.userDescription updateConstraints]; 
      [KVCellAudio.userDescription setNeedsLayout]; 
      [KVCellAudio.userDescription layoutIfNeeded]; 
      [KVCellAudio performSelector:@selector(laodCellContents) onThread:[NSThread mainThread] withObject:nil waitUntilDone:true]; 
      [KVCellAudio.contentView layoutIfNeeded]; 
      return KVCellAudio; 
     } 
      break; 

     default: 
      break; 
    } 
    [KVCell updateConstraints]; 
    [KVCell layoutIfNeeded]; 
    return KVCell; 
} 


- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath; 
{ 

    return UITableViewAutomaticDimension; 

} 

- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath { 
    NSNumber *height = [self.heightAtIndexPath objectForKey:indexPath]; 
    if(height) { 
     return height.floatValue; 
    } else { 
     return UITableViewAutomaticDimension; 
    } 
}

источник

2016-11-03 PunithBm

Перемещение вызова веб-сервисов и загрузки изображений в фоновый поток, чтобы ваш планшет плавно прокручивался. – Vinodh

В вашем tableView есть много вещей: cellForRowAtIndexPath: method. Вы должны вернуть ячейку как можно быстрее. Эта статья будет полезна https://medium.com/ios-os-x-development/perfect-smooth-scrolling-in-uitableviews-fd609d5275a5#.v9pdjnqga –

@OstapHorbach Большое спасибо ... но где установить данные для моя ячейка .. так как я использую несколько пользовательских ячеек - я не могу установить данные в методе ячейки willdisplay .. любые предложения – PunithBm

Вы можете использовать подклассы для ваша пользовательская ячейка. Поскольку у вас есть много настроек для каждой строки, вы можете подклассифицировать свой базовый класс ячейки для каждой строки.

Для настройки данных вы можете создать объект модели данных и создать экземпляр этого класса. Затем вы можете настроить модель данных из cellforRowAtIndexpath, СТГ как

CustomRowCell *rowCell = [[CustomRowCell alloc] init]; 
rowCell.dataSource = [yourDictionary objectForKey:@"key"]// yourArray[indexPath.row];

использовать также очередь отправки для обслуживания вызовов.

Надеюсь, это поможет!

источник

2016-11-03 13:17:47

Привет, спасибо за ответ --- как я подклассифицирую пользовательскую ячейку ... я уже не сделал этого. – PunithBm

Да, я вижу это сейчас. Как я уже сказал, вам нужно переместить все настройки в рамках метода подкласса, скажем, в методе init. –

Прокрутка UITableView негладкая с несколькими настраиваемыми ячейками

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