Question

我注意到每次GMGridView需要刷新时，都会重新创建所有单元格，这需要很长时间。

有没有办法将重用标识符分配给GMGridViewCell或以某种方式确保它们可重用？

以下是我每次重新创建所有可见视图的代码。

  - (GMGridViewCell *)GMGridView:(GMGridView *)gridView cellForItemAtIndex:(NSInteger)index
    {
        NSLog(@"Creating view indx %d", index);

        CGSize size = [self sizeForItemsInGMGridView:gridView];

        GMGridViewCell *cell = [gridView dequeueReusableCell];

        if (!cell) 
        {
            cell = [[GMGridViewCell alloc] init];
            cell.deleteButtonIcon = [UIImage imageNamed:@"close_x.png"];
            cell.deleteButtonOffset = CGPointMake(30, -20);

            UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 57, 57)];

            cell.userData = [[IconFile allObjects] objectAtIndex:index];

            UIImageView* imageView = [[UIImageView alloc] initWithFrame:view.frame];
            NSIndexPath* indexPath = [NSIndexPath indexPathForRow:index inSection:0];
            IconFile* iconFile_ = [self.fetchedResultsController objectAtIndexPath:indexPath];

    //        imageView.image = [UIImage imageNamed:@"retina_114x114_1.png"];
            imageView.image = [UIImage imageWithData:iconFile_.image114];
            [view addSubview:imageView];
            imageView.center = view.center;
            imageView.layer.masksToBounds = YES;
            imageView.layer.cornerRadius = 9;

            view.backgroundColor = [UIColor clearColor];
    //        view.layer.masksToBounds = YES;
    //        view.layer.cornerRadius = 9;
            view.layer.shadowColor = [UIColor grayColor].CGColor;
            view.layer.shadowOffset = CGSizeMake(5, 5);
            view.layer.shadowPath = [UIBezierPath bezierPathWithRect:view.bounds].CGPath;
            view.layer.shadowRadius = 9;

            ShadowLabel *label = [[ShadowLabel alloc] initWithFrame:CGRectMake(0,0,72,21)];
            label.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    //        label.text = (NSString *)[_data objectAtIndex:index];
            label.text = iconFile.springBoardName;

            label.layer.shadowPath = [UIBezierPath bezierPathWithRect:label.bounds].CGPath;
            label.layer.shadowRadius = 9;        
            label.textAlignment = UITextAlignmentCenter;
            label.backgroundColor = [UIColor clearColor];
            label.textColor = [UIColor whiteColor];
            label.font = [UIFont boldSystemFontOfSize:11];
            [view addSubview:label];
            label.center = CGPointMake(size.width/2, 60);


            cell.contentView = view;
        }else{

    //        [[cell.contentView subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];
    //        
    //        UILabel *label = [[UILabel alloc] initWithFrame:cell.contentView.bounds];
    //        label.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    //        label.text = (NSString *)[_data objectAtIndex:index];
    //        label.textAlignment = UITextAlignmentCenter;
    //        label.backgroundColor = [UIColor clearColor];
    //        label.textColor = [UIColor blackColor];
    //        label.font = [UIFont boldSystemFontOfSize:20];
    //        [cell.contentView addSubview:label];
        }
        return cell;
    }

Answer 1

如果重新使用，您的代码似乎对该单元格没有任何作用。这篇文章应该指出你正确的方向...... GitHub

Answer 2

这可能为时已晚，无法回答这个问题，但我有一个答案。

对于重用GMGridCell，您需要在分配单元格后分配重用标识符可能是这样的

    cell.reuseIdentifier =  [NSString stringWithFormat:@"Cell%i", index];

Answer 3

很抱歉迟到的回复。

我认为sigle / group tableview上的可重用单元只需在nil单元格上声明和分配时添加此代码。

代码 - ：

//声明

 UItableViewCell *cell = [tbl_List dequeueReusableCellWithIdentifier:[NSString stringWithFormat:@"%d%d",indexPath.section,indexPath.row]];

//分配

if（cell == nil） {

     cell = [[UItableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:[NSString stringWithFormat:@"%d%d",indexPath.section,indexPath.row]];

 }

iOS GM GridView如何重用GM GridView Cell单元？

3 个答案: