Question

我只是尝试使用自定义UICollectionViewCell调用方法，并且它使用SIGABRT崩溃

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    if([_leaderboardDictionary count] > 0 && indexPath.row == 0)
    {
        return [self insertLeaderBoardCellAtIndexPath:indexPath];
    }
    else
    {
        return [self insertDetailGraphicCellAtIndexPath:indexPath];
    }
}

-(CampaignDetailGraphic2Cell *)insertDetailGraphicCellAtIndexPath:(NSIndexPath *)indexPath
{
    CampaignDetailGraphic2Cell *cell = (CampaignDetailGraphic2Cell *)[_topCollectionView dequeueReusableCellWithReuseIdentifier:@"detailWebCell" forIndexPath:indexPath];
    if(cell == nil)
    {
        if(is3_5Inches)
        {
            cell = [[CampaignDetailGraphic2Cell alloc] initWithFrame:CGRectMake(0, 0, 300, 172)];
        }
        else
        if(is4Inches)
        {
            cell = [[CampaignDetailGraphic2Cell alloc] initWithFrame:CGRectMake(0, 0, 300, 220)];
        }
        else
        if(isIphone6)
        {
            cell = [[CampaignDetailGraphic2Cell alloc] initWithFrame:CGRectMake(0, 0, 355, 290)];
        }
        else
        if(isIphone6Plus)
        {
            cell = [[CampaignDetailGraphic2Cell alloc] initWithFrame:CGRectMake(0, 0, 394, 356)];
        }
    }

    [cell setupCell];

...

}

此方法存在于我的CampaignDetailGraphic2Cell类中。

我知道如何调用方法和设置单元格的属性......？

Answer 1

您不应该使用alloc init创建UICollectionViewCells。您需要在设置集合时注册类或nib文件，然后使单元格出列。完成后，您可以调用单元格上的方法。

即

[self.collectionView registerClass:[CampaignDetailGraphic2Cell class] forCellWithReuseIdentifier:@"CampaignCell"];

然后

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    CampaignDetailGraphic2Cell* cell = (CampaignDetailGraphic2Cell*)[collectionView dequeueReusableCellWithReuseIdentifier:@"CampaignCell" forIndexPath:indexPath];
    ...
    return cell;
}

UICollectionViewCell发出调用方法

1 个答案: