我的目标是在我的视图底部有一个集合视图。单元格中充满了照片库中的照片。我不知道为什么,但细胞相互重叠。有人知道为什么吗?这是来自 ViewController 的代码:
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView
numberOfItemsInSection:(NSInteger)section
{
return [self.fotoArray count];
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = @"foto_cell";
FotoCell *cell = [self.collectionView
dequeueReusableCellWithReuseIdentifier:cellIdentifier
forIndexPath:indexPath];
Foto *currFoto = [self.fotoArray objectAtIndex:indexPath.row];
// Set the selectedFotoID
[CoreDataManager sharedInstance].selectedFotoId = ((Foto*)[self.fotoArray objectAtIndex:indexPath.row]).objectID;
NSURL *u = [NSURL URLWithString:currFoto.f_path];
[self findImage:u in: cell];
return cell;
}
// Get Photo from Asset Library
-(void)findImage:(NSURL*)u in: (FotoCell*) cell
{
__block FotoCell *blockCell = cell;
//
ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset)
{
ALAssetRepresentation *rep = [myasset defaultRepresentation];
CGImageRef iref = [rep fullResolutionImage];
if (iref) {
UIImage *largeimage = [UIImage imageWithCGImage:iref];
//[largeimage retain];
UIImage *thumbnail = [UIImage imageWithCGImage:iref scale:0.15 orientation:UIImageOrientationUp];
[blockCell.fotoThumb setImage:thumbnail];
}
};
//
ALAssetsLibraryAccessFailureBlock failureblock = ^(NSError *myerror)
{
NSLog(@"cant get image - %@",[myerror localizedDescription]);
};
NSURL *asseturl = u;
ALAssetsLibrary* assetslibrary = [[[ALAssetsLibrary alloc] init] autorelease];
[assetslibrary assetForURL:asseturl
resultBlock:resultblock
failureBlock:failureblock];
}
这里是我的 Cell.m 类的代码:
@implementation FotoCell
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
- (void)dealloc {
[_fotoThumb release];
[super dealloc];
}
@end