XCode 6 UICollectionview viewwithtag not working

问题

Seems XCode 6 is different in using viewwithtags then XCode 5 was.

I am using the following code in XCode 6 with Storyboards. 50 cells are created but the label is not visible.Everything is set correctly like the tag etc. If I use the "old" XCode 5 way to do it with Register cell classed it seems to work for iOS 7 but in iOS 8 the data is not passed to the label until I start to scroll.

static NSString * const reuseIdentifier = @"MyCell";

- (void)viewDidLoad {
    [super viewDidLoad];

    // Register cell classes
    [self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier];

}

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
    return 1;
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return 50;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];

    UILabel *nameLabel = (UILabel *)[cell viewWithTag:102];    
    nameLabel.text = @"Hello World";
    nameLabel.textColor = [UIColor whiteColor];

    cell.backgroundColor = [UIColor blueColor];

    return cell;
}

Updated answer as this works but under iOS 8 the first cell just wont display the content. Only after scrolling up and down the content is loading to the label.

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    static NSString *identifier = @"Cell";

    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];

    UILabel *nameLabel = (UILabel *)[cell viewWithTag:102];    
    nameLabel.text = @"Hello World";
    nameLabel.textColor = [UIColor whiteColor];

    cell.backgroundColor = [UIColor blueColor];

    return cell;
}

Screenshots here:

https://www.dropbox.com/s/xs6gbvz3d04e4hv/Bildschirmfoto%202014-09-21%20um%2023.08.18.png?dl=0 https://www.dropbox.com/s/tp67rznggi5pcwt/Bildschirmfoto%202014-09-21%20um%2023.10.06.png?dl=0

回答1:

I found the solution in doing it the way like I did before. Remove the line to register the cell and put the reuseIdentifier where you handle the cell. Sorry for my late response on this

回答2:

I had similar problem when I was using Xcode 6.3 beta and IOS 8. I solved it like this. First select view and disable the Size Classes in Storyboard. Then clean and build the app. After that enable the Size Classes . It will work now.

来源：https://stackoverflow.com/questions/25962671/xcode-6-uicollectionview-viewwithtag-not-working