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This article mainly shows you "how to use the new features of collectionView in iOS9". The content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "how to use the new features of collectionView in iOS9".

Specific usage:

1. Create a collectionView and set up a proxy

-(UICollectionView *) collectionView {if (_ collectionView = = nil) {UICollectionViewFlowLayout * layout = [[UICollectionViewFlowLayout alloc] init]; layout.itemSize = CGSizeMake (50,50); _ collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake (0,20, self.view.bounds.size.width, self.view.bounds.size.height) collectionViewLayout:layout]; layout.minimumLineSpacing = 10; layout.minimumInteritemSpacing = 10 [_ collectionView registerClass: [UICollectionViewCell class] forCellWithReuseIdentifier:@ "Cell"]; _ collectionView.backgroundColor = [UIColor cyanColor]; _ collectionView.dataSource = self; / / add a long press gesture here to trigger the cell movement effect UILongPressGestureRecognizer * longGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector (handlelongGesture:)]; [_ collectionView addGestureRecognizer:longGesture];} return _ collectionView;}

two。 Set up its resources

_ dataSource = [NSMutableArray array]; for (int I = 1; I

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