//
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// UICollectionViewLayout+MJRefresh.m
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//
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// 该类是用来解决 Footer 在底端加载完成后, 仍停留在原处的 bug.
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// 此问题出现在 iOS 14 及以下系统上.
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// Reference: https://github.com/CoderMJLee/MJRefresh/issues/1552
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//
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// Created by jiasong on 2021/11/15.
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// Copyright © 2021 小码哥. All rights reserved.
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//
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#import "UICollectionViewLayout+MJRefresh.h"
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#import "MJRefreshConst.h"
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#import "MJRefreshFooter.h"
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#import "UIScrollView+MJRefresh.h"
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@implementation UICollectionViewLayout (MJRefresh)
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+ (void)load {
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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MJRefreshExchangeImplementations(self.class, @selector(finalizeCollectionViewUpdates),
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self.class, @selector(mj_finalizeCollectionViewUpdates));
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});
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}
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- (void)mj_finalizeCollectionViewUpdates {
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[self mj_finalizeCollectionViewUpdates];
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__kindof MJRefreshFooter *footer = self.collectionView.mj_footer;
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CGSize newSize = self.collectionViewContentSize;
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CGSize oldSize = self.collectionView.contentSize;
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if (footer != nil && !CGSizeEqualToSize(newSize, oldSize)) {
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NSDictionary *changed = @{
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NSKeyValueChangeNewKey: [NSValue valueWithCGSize:newSize],
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NSKeyValueChangeOldKey: [NSValue valueWithCGSize:oldSize],
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};
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[CATransaction begin];
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[CATransaction setDisableActions:YES];
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[footer scrollViewContentSizeDidChange:changed];
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[CATransaction commit];
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}
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}
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@end
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