0
//collection view
UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc] init];
self.collectionView=[[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout];
[self.collectionView setDataSource:self];
[self.collectionView setDelegate:self];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cellIdentifier"];
[self.collectionView setBackgroundColor:[UIColor redColor]];
[self.view addSubview:self.collectionView];
}
- (NSInteger)collectionView:(UICollectionView *)tcollectionView numberOfItemsInSection:(NSInteger)section
{
return 15;
}
// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"cellIdentifier" forIndexPath:indexPath];
cell.backgroundColor=[UIColor greenColor];
return cell;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return CGSizeMake(50, 50);
}
-[NSISUnrestrictedVariable collectionView:numberOfItemsInSection:]: unrecognized selector sent to instance 0x7fce804111b0
那是什麼? (收藏視圖在視圖控制器內部,tand他在滾動視圖內)