Question

在我的应用程序中，我有一个表视图和一行中的4个图像视图。当我滚动表视图时，再次调用索引路径方法的行的单元格，然后应用程序崩溃。如何在滚动时阻止表视图重新加载。我的代码部分是： -

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = nil;
    static NSString *AutoCompleteRowIdentifier = @"AutoCompleteRowIdentifier";


    cell = [tableView dequeueReusableCellWithIdentifier:AutoCompleteRowIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:AutoCompleteRowIdentifier] autorelease];

        for (int i=0; i <= [wordsInSentence count]; ++i) {
            UIImageView *imageView1 = [[[UIImageView alloc] initWithFrame:CGRectMake(30+90*(i%4), 15, 80, 100)] autorelease] ;
            imageView1.tag = i+1;

            [imageViewArray insertObject:imageView1 atIndex:i];
            [cell.contentView addSubview:imageView1];
        }

    }

    int photosInRow;

    if ( (indexPath.row < [tableView numberOfRowsInSection:indexPath.section] - 1) || ([wordsInSentence count] % 4 == 0) ) {
        photosInRow = 4;
    } else {
        photosInRow = [wordsInSentence count] % 4;
    }

    for ( int i = 1; i <=photosInRow ; i++ ){
        imageView = (UIImageView *)[cell.contentView viewWithTag:j];
        [self showImage:imageView];
    }

    return cell;
}

请帮忙。任何帮助将不胜感激。

谢谢，克里斯蒂

Answer 1

我看到的唯一问题就是这个，

for ( int i = 1; i <= photosInRow ; i++ ){
    imageView = (UIImageView *)[cell.contentView viewWithTag:j];
    [self showImage:imageView];
}

这里j是什么？我建议你改为i，即

for ( int i = 1; i <=photosInRow ; i++ ){
    imageView = (UIImageView *)[cell.contentView viewWithTag:i];
    [self showImage:imageView];
}

因此，我看到的其他缺陷就是这里的逻辑，

for (int i=0; i <= [wordsInSentence count]; ++i) {
    UIImageView *imageView1 = [[[UIImageView alloc] initWithFrame:CGRectMake(30+90*(i%4), 15, 80, 100)] autorelease] ;
    imageView1.tag = i+1;

    [imageViewArray insertObject:imageView1 atIndex:i];
    [cell.contentView addSubview:imageView1];
}

您只需要连续添加4个图像视图。不是每行中图像视图的总数。这是有缺陷的逻辑。建议更新

for (int i = 0; i < 4; ++i) {
    UIImageView *imageView1 = [[[UIImageView alloc] initWithFrame:CGRectMake(30+90*(i%4), 15, 80, 100)] autorelease] ;
    imageView1.tag = i+1;

    int trueImageIndex = indexPath.row * 4 + i;
    [imageViewArray insertObject:imageView1 atIndex:trueImageIndex];

    [cell.contentView addSubview:imageView1];
}

索引路径上的行的表视图方法单元格再次重新加载然后应用程序崩溃

1 个答案: