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私は壁などに投稿を表示しています。好き嫌いの数を表示する必要がある嫌いなボタンです。投稿のデータは、一度に別の API から取得されます。しかし、好き嫌いの値は別の API から来ています。そして、各投稿の嫌いなものには、API に渡されてヒットする ID があります。したがって、この API がヒットしている投稿ごとに、セルの数に等しいことを意味します。だからディスパッチキューを使用しましたが、配列にシャッフルされた値が表示され、ディスパッチキューがないと正しい値が返されますが、スクロール中にテーブルが一時停止し、非常に遅くなります。この問題を解決する方法を教えてください。

これがコードです。

-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";

Cell *cell = (Cell*)[self.mPublicFriendTable dequeueReusableCellWithIdentifier:nil];
if (cell == nil) {
    cell = [[Cell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
else{
    cell = [[Cell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}

cell.contentView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"text_boxbg.png"]];

cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.mLblName.frame = CGRectMake(50, 9, 150, 18);
cell.mLblTxt.frame = CGRectMake(50, 26, 218, 29);

if (indexPath.section == [self.mArrLike count])
{
     cell.textLabel.text = @"Load More...";
} else
{
strLk = [self.mArrLike objectAtIndex:indexPath.section];
strDLk = [self.mArrDislike objectAtIndex:indexPath.section];

   // NSLog(@"mARRUname:%d", [self.mArrUName count]);
cell.mLblName.text = [self.mArrUName objectAtIndex:indexPath.section];
CGSize size = [cell.mLblName.text sizeWithFont:[UIFont boldSystemFontOfSize:20.0]];
cell.mLblImg.frame = CGRectMake(size.width+20,14, 9, 14);

NSString *imageUrlString = [self.mArrProfileImg objectAtIndex:indexPath.section];
NSLog(@"counter at:%d",indexPath.section);
asyncImageView = [[AsyncImageView alloc]initWithFrame:CGRectMake(9, 9, 37, 37)];
[asyncImageView loadImageFromURL:[NSURL URLWithString:imageUrlString]];
[cell.contentView addSubview:asyncImageView];

cell.mLblTxt.text = [self.mArrText objectAtIndex:indexPath.section];
cell.mLblDate.text = [self.mArrDate objectAtIndex:indexPath.section];
cell.mLblTimeImg.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"message.png"]];
cell.mLblDate.textColor = [UIColor colorWithRed:109.0/255.0 green:218.0/255.0 blue:250.0/255.0 alpha:1.0];

[cell.mBtnLike setImage:[UIImage imageNamed:@"thumb_up.png"] forState:UIControlStateNormal];
    [cell.mBtnLike addTarget:self action:@selector(like:) forControlEvents:UIControlEventTouchUpInside];
//[cell.mBtnLike setBackgroundColor:[UIColor colorWithRed:47.0/255.0 green:200.0/255.0 blue:247.0/255.0 alpha:1.0]];
[cell.mBtnLike setTitleEdgeInsets:UIEdgeInsetsMake(0, 0, 0, -10)];
cell.mBtnLike.imageEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);
[cell.mBtnLike setTitle:strLk forState:UIControlStateNormal];

[cell.mBtnDislike setImage:[UIImage imageNamed:@"thumb_down.png"] forState:UIControlStateNormal];
[cell.mBtnDislike addTarget:self action:@selector(dislike) forControlEvents:UIControlEventTouchUpInside];
 //[cell.mBtnDislike setBackgroundColor:[UIColor colorWithRed:47.0/255.0 green:200.0/255.0 blue:247.0/255.0 alpha:1.0]];
[cell.mBtnDislike setTitleEdgeInsets:UIEdgeInsetsMake(0, 0, 0, -10)];
cell.mBtnDislike.imageEdgeInsets = UIEdgeInsetsMake(0, -15, 0, 0);
[cell.mBtnDislike setTitle:strDLk forState:UIControlStateNormal];

[cell.mBtnShare setImage:[UIImage imageNamed:@"back_icon.png"] forState:UIControlStateNormal];
[cell.mBtnShare addTarget:self action:@selector(share) forControlEvents:UIControlEventTouchUpInside];
 //[cell.mBtnShare setBackgroundColor:[UIColor colorWithRed:47.0/255.0 green:200.0/255.0 blue:247.0/255.0 alpha:1.0]];
cell.mBtnShare.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 0, -35);
[cell.mBtnShare setTitleEdgeInsets:UIEdgeInsetsMake(0, -50, 0, 0)];
[cell.mBtnShare setTitle:@"" forState:UIControlStateNormal];

[cell.mBtnComm setImage:[UIImage imageNamed:@"chat_icon.png"] forState:UIControlStateNormal];
[cell.mBtnComm addTarget:self action:@selector(comments) forControlEvents:UIControlEventTouchUpInside];
//[cell.mBtnComm setBackgroundColor:[UIColor colorWithRed:47.0/255.0 green:200.0/255.0 blue:247.0/255.0 alpha:1.0]];
[cell.mBtnComm setTitleEdgeInsets:UIEdgeInsetsMake(0, -52, 0, 0)];
cell.mBtnComm.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 0, -50);
[cell.mBtnComm setTitle:@"30" forState:UIControlStateNormal];
}
return cell;
}

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
  NSLog(@"count like:%d", [self.mArrLike count]);
NSLog(@"count uname:%d", [self.mArrUName count]);
if(indexPath.section == ([self.mArrLike count]-1))
{
[self loadData:indexPath.section];
}
}

-(void)loadData:(int)indexVal;
{
status = [NSString stringWithFormat:@"get"];
[self.mButtonsStatusDict setObject:status forKey:@"status"];

[self.mButtonsPidDict setObject:[self.mArrPid objectAtIndex:indexVal] forKey:@"pid"];

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);

dispatch_async(queue, ^{

    self.mButtonsDict = [MyEventApi likeDislike:self.mButtonsUidDict post:self.mButtonsPidDict postStatus:self.mButtonsStatusDict];
    NSLog(@"buttons data dict:%@", self.mButtonsDict);


    dispatch_sync(dispatch_get_main_queue(), ^{

        [self.mArrLike addObject: [self.mButtonsDict valueForKey:@"like"]];
        [self.mArrDislike addObject: [self.mButtonsDict valueForKey:@"dislike"]];

        NSLog(@"arrLike count:%d", [self.mArrLike count]);
       // strLk = [self.mArrLike objectAtIndex:indexPath.section];
       // strDLk = [self.mArrDislike objectAtIndex:indexPath.section];

        [self.mPublicFriendTable reloadData];
    });
});
}

ディスパッチ キューと非同期 json も試しましたが、適切な結果が得られません。以上、予めご了承の上ご案内をお願い致します。

ここに画像の説明を入力

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1 に答える 1

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- .h ファイル内の変数を次のように宣言します。int serialIndexVal;

-indexValを追跡するserialIndexValを維持します...

serialIndexVal++; 
indexVal=serialIndexVal;

以下のコードを GCD ブロック内に配置します

__block NSString *status = [NSString stringWithFormat:@"get"];
 [self.mButtonsStatusDict setObject:status forKey:@"status"]; 
[self.mButtonsPidDict setObject:[self.mArrPid objectAtIndex:indexVal] forKey:@"pid"];

-on viewWillDisappear を作成しますserialIndexVal=0。また。

于 2013-04-09T13:59:37.040 に答える