146 lines
5.7 KiB
Objective-C
146 lines
5.7 KiB
Objective-C
//
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// KBShopItemVC.m
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// keyBoard
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//
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// Created by Mac on 2025/11/9.
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//
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#import "KBShopItemVC.h"
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#import <MJRefresh/MJRefresh.h>
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#import <Masonry/Masonry.h>
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#import "KBSkinCardCell.h"
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@interface KBShopItemVC ()<UICollectionViewDataSource, UICollectionViewDelegateFlowLayout>
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@property (nonatomic, copy) void(^scrollCallback)(UIScrollView *scrollView);
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@end
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@implementation KBShopItemVC
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- (void)viewDidLoad {
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[super viewDidLoad];
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self.view.backgroundColor = [UIColor whiteColor];
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// 懒加载 collectionView，并添加到视图
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[self.view addSubview:self.collectionView];
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[self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
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make.edges.equalTo(self.view); // mas 布局：铺满
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}];
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// 刷新组件（演示：2 秒后结束）
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KBWeakSelf
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if (self.isNeedHeader) {
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self.collectionView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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[weakSelf.collectionView.mj_header endRefreshing];
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});
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}];
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}
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if (self.isNeedFooter) {
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self.collectionView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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[weakSelf.dataSource addObject:@"加载更多成功"]; // 模拟新增一条
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[weakSelf.collectionView reloadData];
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[weakSelf.collectionView.mj_footer endRefreshing];
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});
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}];
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}
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if (@available(iOS 11.0, *)) {
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self.collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
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}
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[self beginFirstRefresh];
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}
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#pragma mark - 刷新控制
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// 首次进入自动触发一次刷新（如果需要）
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- (void)beginFirstRefresh {
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if (!self.isHeaderRefreshed) {
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[self beginRefreshImmediately];
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}
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}
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- (void)beginRefreshImmediately {
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if (self.isNeedHeader) {
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[self.collectionView.mj_header beginRefreshing];
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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self.isHeaderRefreshed = YES;
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[self.collectionView reloadData];
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[self.collectionView.mj_header endRefreshing];
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});
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} else {
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self.isHeaderRefreshed = YES;
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[self.collectionView reloadData];
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}
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}
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#pragma mark - UICollectionView DataSource
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
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if (!self.isHeaderRefreshed) return 0;
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return self.dataSource.count;
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}
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- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
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KBSkinCardCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"KBSkinCardCell" forIndexPath:indexPath];
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NSString *title = (indexPath.item < self.dataSource.count) ? self.dataSource[indexPath.item] : @"Dopamine";
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[cell configWithTitle:title imageURL:nil price:@"20"]; // 价格写死 20（演示）
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return cell;
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}
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#pragma mark - UICollectionView DelegateFlowLayout
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- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
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// 两列布局：左右 16 间距，中间列间距 12
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CGFloat insetLR = 16.0;
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CGFloat spacing = 12.0;
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CGFloat contentW = collectionView.bounds.size.width - insetLR * 2;
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CGFloat itemW = floor((contentW - spacing) / 2.0);
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CGFloat itemH = itemW * 0.75 + 56; // KBSkinCardCell 内部高度估算
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return CGSizeMake(itemW, itemH);
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}
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- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
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return UIEdgeInsetsMake(12, 16, 12, 16);
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}
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- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
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return 12.0;
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}
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- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
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return 12.0;
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}
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#pragma mark - UIScrollView Delegate（转发给分页容器）
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
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!self.scrollCallback ?: self.scrollCallback(scrollView);
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}
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#pragma mark - JXPagingViewListViewDelegate
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- (UIView *)listView { return self.view; }
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- (UIScrollView *)listScrollView { return self.collectionView; }
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- (void)listViewDidScrollCallback:(void (^)(UIScrollView *))callback { self.scrollCallback = callback; }
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- (void)listWillAppear { NSLog(@"%@:%@", self.title, NSStringFromSelector(_cmd)); }
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- (void)listDidAppear { NSLog(@"%@:%@", self.title, NSStringFromSelector(_cmd)); }
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- (void)listWillDisappear { NSLog(@"%@:%@", self.title, NSStringFromSelector(_cmd)); }
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- (void)listDidDisappear { NSLog(@"%@:%@", self.title, NSStringFromSelector(_cmd)); }
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#pragma mark - Lazy
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- (UICollectionView *)collectionView {
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if (!_collectionView) {
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UICollectionViewFlowLayout *layout = [UICollectionViewFlowLayout new];
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layout.scrollDirection = UICollectionViewScrollDirectionVertical;
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_collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
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_collectionView.backgroundColor = [UIColor whiteColor];
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_collectionView.dataSource = self;
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_collectionView.delegate = self;
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// 注册皮肤卡片 cell
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[_collectionView registerClass:KBSkinCardCell.class forCellWithReuseIdentifier:@"KBSkinCardCell"]; // 复用标识
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}
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return _collectionView;
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}
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@end
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