短视频app源码开发：仿抖音短视频热门页面的实现

在短视频app源码开发中，仿抖音短视频热门页面的实现只不过是多了一个由UICollectionView呈现多个视频图片的中间界面，点开后播放视频界面其实就是推荐界面，所以这里并没有什么核心难点，只是简单介绍下这个collectionView就好了。

#import "HotVideoVC.h"
#import <MJRefresh/MJRefresh.h>
#import "RecommendVideoVC.h"
#import "NearbyVideoModel.h"
#import "VideoCollectionCell.h"#import "AFNetworking.h"@interface HotVideoVC ()<UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout>
@property(nonatomic,strong)NSMutableArray *allArray;
@property(nonatomic,strong)NSArray *modelrray;
@property(nonatomic,strong)UICollectionView *collectionView;@end@implementation HotVideoVC{NSInteger _page;
}- (void)viewDidLoad {[super viewDidLoad];self.automaticallyAdjustsScrollViewInsets = NO;_modelrray = [NSArray array];_page = 1;self.navigationController.interactivePopGestureRecognizer.delegate = (id) self;self.automaticallyAdjustsScrollViewInsets = NO;self.allArray = [NSMutableArray array];UICollectionViewFlowLayout *flow = [[UICollectionViewFlowLayout alloc]init];flow.scrollDirection = UICollectionViewScrollDirectionVertical;flow.itemSize = CGSizeMake(_window_width/2-1, (_window_width/2-1) * 1.4);flow.minimumLineSpacing = 2;flow.minimumInteritemSpacing = 2;self.collectionView = [[UICollectionView alloc]initWithFrame:CGRectMake(0,statusbarHeight, _window_width, _window_height-49-statusbarHeight-ShowDiff) collectionViewLayout:flow];[self.collectionView registerNib:[UINib nibWithNibName:@"VideoCollectionCell" bundle:nil] forCellWithReuseIdentifier:@"VideoCollectionCell"];self.collectionView.delegate =self;self.collectionView.dataSource = self;self.collectionView.mj_footer  = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{_page ++;[self pullInternetforNew:_page];}];self.collectionView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{_page = 1;[self pullInternetforNew:_page];}];[self.view addSubview:self.collectionView];self.view.backgroundColor = Black_Cor;self.collectionView.backgroundColor = [UIColor blackColor];[self pullInternetforNew:1];//因为列表不可以每次 都重新刷新，影响用户体验，也浪费流量//在视频页面输出视频后返回[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getLiveList:) name:@"delete" object:nil];//发布视频成功之后返回首页刷新列表[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pullInternetforNewDown) name:@"reloadlist" object:nil];}
//在视频页面删除视频回来后删除
-(void)getLiveList:(NSNotification *)nsnitofition{NSString *videoid = [NSString stringWithFormat:@"%@",[[nsnitofition userInfo] valueForKey:@"videoid"]];NSDictionary *deletedic = [NSDictionary dictionary];for (NSDictionary *subdic in self.allArray) {NSString *videoids = [NSString stringWithFormat:@"%@",[subdic valueForKey:@"id"]];if ([videoid isEqual:videoids]) {deletedic = subdic;break;}}if (deletedic) {[self.allArray removeObject:deletedic];[self.collectionView reloadData];}
}
-(void)refreshNear{
}
//down
-(void)pullInternetforNewDown{self.allArray = [NSMutableArray array];_page = 1;[self pullInternetforNew:_page];
}
-(void)getDataByFooterup{_page ++;[self pullInternetforNew:_page];
}
-(void)pullInternetforNew:(NSInteger)pages{self.collectionView.userInteractionEnabled = NO;NSString *url = [NSString stringWithFormat:@"%@&p=%ld",_url,(long)pages];WeakSelf;[YBNetworking postWithUrl:url Dic:nil Suc:^(NSDictionary *data, NSString *code, NSString *msg) {[weakSelf.collectionView.mj_header endRefreshing];[weakSelf.collectionView.mj_footer endRefreshing];weakSelf.collectionView.userInteractionEnabled = YES;if ([code isEqual:@"0"]) {NSArray *info = [data valueForKey:@"info"];if (_page == 1) {[self.allArray removeAllObjects];}[self.allArray addObjectsFromArray:info];//加载成功 停止刷新[self.collectionView.mj_header endRefreshing];[self.collectionView.mj_footer endRefreshing];[self.collectionView reloadData];if (self.allArray.count > 0) {[PublicView hiddenTextNoData:_collectionView];}else{[PublicView showTextNoData:_collectionView text1:@"" text2:@"暂无热门视频哦~"];}if (info.count <= 0) {[self.collectionView.mj_footer endRefreshingWithNoMoreData];}}else if ([code isEqual:@"700"]){[PublicObj tokenExpired:minstr([data valueForKey:@"msg"])];}else{if (self.allArray) {[self.allArray removeAllObjects];}[self.collectionView reloadData];[PublicView showTextNoData:_collectionView text1:@"" text2:@"暂无热门视频哦~"];}} Fail:^(id fail) {weakSelf.collectionView.userInteractionEnabled = YES;self.collectionView.userInteractionEnabled = YES;if (self.allArray) {[self.allArray removeAllObjects];}[self.collectionView reloadData];[PublicView showTextNoData:_collectionView text1:@"" text2:@"暂无热门视频哦~"];[self.collectionView.mj_header endRefreshing];[self.collectionView.mj_footer endRefreshing];}];
}
#pragma mark - Table view data source-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{return self.allArray.count;
}- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section{return 2;
}
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{return 1;
}
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{VideoCollectionCell *cell = (VideoCollectionCell *)[collectionView cellForItemAtIndexPath:indexPath];RecommendVideoVC *video = [[RecommendVideoVC alloc]init];video.fromWhere = @"myVideoV";video.curentIndex = indexPath.row;video.videoList = _allArray;video.pages = _page;video.firstPlaceImage = cell.bgImageV.image;video.requestUrl = _url;video.block = ^(NSMutableArray *array, NSInteger page,NSInteger index) {_page = page;self.allArray = array;[self.collectionView reloadData];[self.collectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:index inSection:0] atScrollPosition:UICollectionViewScrollPositionBottom animated:NO];};//    video.hidesBottomBarWhenPushed = YES;[[TCBaseAppDelegate sharedAppDelegate] pushViewController:video animated:YES];
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{VideoCollectionCell *cell = (VideoCollectionCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"VideoCollectionCell" forIndexPath:indexPath];NSDictionary *subdic = _allArray[indexPath.row];cell.isList = @"1";cell.model = [[NearbyVideoModel alloc] initWithDic:subdic];return cell;
}@end

这样仿抖音样式的短视频热门页面就大体实现了，之后还会继续分享关于短视频app源码开发的相关知识。

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