小编The*_*her的帖子

我有使用数据重新加载的问题UICollectionView.我有这个数组viewDidLoad来填补UICollectionView.

array = [[NSMutableArray alloc] init];
[array addObject:@"1"];
[array addObject:@"2"];
[array addObject:@"3"];
[array addObject:@"4"];
[array addObject:@"5"];
[array addObject:@"6"];

和方法:

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *cellIdentifier = @"Cell";
    //cell = [[UICollectionViewCell alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
    myCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];

    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(5, 0, 100, 20)];
    [titleLabel setText:[array objectAtIndex:indexPath.row]];
    titleLabel.textColor = [UIColor whiteColor];
    titleLabel.backgroundColor = [UIColor clearColor];
    [cell addSubview:titleLabel];

    return cell;
}

我点击UIButton并重新加载数据:

[myCollectionView reloadData];

这里重新加载之前和之后的数据如何:

我在3.5英寸屏幕上开发了一个应用程序,现在我为4英寸屏幕做了一个新的故事板,我喜欢跟随在appdelegate上的故事板之间切换,我记录了屏幕高度,它给了我480.00000检查它:

NSLog(@"Checking Screen Size");
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
{    
    NSLog(@"On iPhone");
    CGSize iOSDeviceScreenSize = [[UIScreen mainScreen] bounds].size;

    if (iOSDeviceScreenSize.height == 480)
    {   (diagonally measured)
        NSLog(@"iPhone 4: %f", iOSDeviceScreenSize.height);
}
if (iOSDeviceScreenSize.height == 568)
{   
        NSLog(@"iPhone 5: %f", iOSDeviceScreenSize.height);
}

我的手机是iPhone 5,NSLog给了我480.0000