/** * Copyright (c) 2016-present, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ #import "IGListCollectionView.h" @implementation IGListCollectionView - (void)commonInit { self.backgroundColor = [UIColor whiteColor]; self.alwaysBounceVertical = YES; } - (instancetype)initWithFrame:(CGRect)frame collectionViewLayout:(UICollectionViewLayout *)layout { if (self = [super initWithFrame:frame collectionViewLayout:layout]) { [self commonInit]; } return self; } - (instancetype)initWithCoder:(NSCoder *)aDecoder { if (self = [super initWithCoder:aDecoder]) { [self commonInit]; } return self; } - (void)layoutSubviews { /** UICollectionView will sometimes lay its cells out with an animation. This is especially noticeable on older devices while scrolling quickly. The simplest fix is to just disable animations for -layoutSubviews, which is where cells and other views inside the UICollectionView are laid out. */ [UIView performWithoutAnimation:^{ [super layoutSubviews]; }]; } @end