前段時間公司在研發一個電商項目,趁現在有時間把其中的知識點整理整理。
項目的商品詳情頁面當時是仿製淘寶的,用到的第三方庫是MJRefresh,上拉操作和下拉操作的重新整理效果是把MJRefresh重新整理效果從建立個分類封裝了一下,感謝傑哥!!!
基本思路:
1、設定一個 UIScrollView 作為視圖底層,並且設定分頁為兩頁
2、然後在第一個分頁上添加一個 UITableView 並且設定表格能夠上提載入(上拉操作即為讓視圖滾動到下一頁)
3、 在第二個分頁上添加一個 UIScrollView 並且設定能有下拉重新整理操作(下拉操作即為讓視圖滾動到上一頁)
4、第二個分頁UIScrollView添加子UIView,一般式商品的圖文詳情、產品參數、店鋪等
5、Demo只提供簡單的思路,項目具體實現基本相同
/** 封裝重新整理 MJRefresh */#import "QRG_MJRefreshAutoFooter.h"#import "QRG_MJRefreshNormalHeader.h"#import "CollectionViewCell.h"#define WIDTH [UIScreen mainScreen].bounds.size.width#define HEIGHT [UIScreen mainScreen].bounds.size.height#define ARCCOLOR (arc4random() % 255/256.0)#import "ViewController.h"
主要代碼
- (void)viewDidLoad { [super viewDidLoad]; /** 底層view*/ UIScrollView *mainScrollView = [[UIScrollView alloc] init]; mainScrollView.scrollEnabled = NO; mainScrollView.frame = CGRectMake(0, 0, WIDTH, HEIGHT); mainScrollView.contentSize = CGSizeMake(WIDTH, HEIGHT * 2); mainScrollView.backgroundColor = [UIColor greenColor]; mainScrollView.pagingEnabled = YES; mainScrollView.bounces = YES; [self.view addSubview:mainScrollView]; /** 第一頁面 table*/ OneTable = [[UITableView alloc] init]; OneTable.frame = CGRectMake(0,0, WIDTH, HEIGHT - 64); OneTable.separatorColor = [UIColor greenColor]; OneTable.delegate = self; OneTable.dataSource = self; OneTable.rowHeight = 80; [mainScrollView addSubview:OneTable]; /** 第二頁面 scrollView*/ UIScrollView *TwoScrollView = [[UIScrollView alloc] init]; TwoScrollView.frame = CGRectMake(0, HEIGHT + 64, WIDTH, HEIGHT - 64); TwoScrollView.contentSize = CGSizeMake(WIDTH * 3, HEIGHT - 64); TwoScrollView.backgroundColor = [UIColor cyanColor]; TwoScrollView.pagingEnabled = YES; TwoScrollView.bounces = NO; [mainScrollView addSubview:TwoScrollView]; /** 第二頁面 table*/ TwoTable = [[UITableView alloc] init]; TwoTable.frame = CGRectMake(WIDTH, 0, WIDTH, HEIGHT - 64); TwoTable.separatorColor = [UIColor redColor]; TwoTable.delegate = self; TwoTable.dataSource = self; [TwoScrollView addSubview:TwoTable]; /** 第二頁面 UICollectionView*/ UICollectionViewFlowLayout *flow = [[UICollectionViewFlowLayout alloc] init]; [flow setScrollDirection:UICollectionViewScrollDirectionVertical]; UICollectionView *TwoCollectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, HEIGHT - 64) collectionViewLayout:flow]; TwoCollectionView.backgroundColor = [UIColor lightTextColor]; TwoCollectionView.delegate = self; TwoCollectionView.dataSource = self; [TwoScrollView addSubview:TwoCollectionView];// [TwoCollectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"Coll"]; [TwoCollectionView registerNib:[UINib nibWithNibName:@"CollectionViewCell" bundle:nil] forCellWithReuseIdentifier:@"Coll"]; //設定UITableView 上拉載入 OneTable.mj_footer = [QRG_MJRefreshAutoFooter footerWithRefreshingBlock:^{ //上拉,執行對應的操作---改變底層滾動視圖的滾動到對應位置 //設定動畫效果 [UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationOptionLayoutSubviews animations:^{ // self.scrollV.contentOffset = CGPointMake(0, IPHONE_H); [mainScrollView setContentOffset:CGPointMake(0, HEIGHT)]; } completion:^(BOOL finished) { //結束載入 [OneTable.mj_footer endRefreshing]; }]; }]; //設定TwoCollectionView 有下拉操作 TwoCollectionView.mj_header = [QRG_MJRefreshNormalHeader headerWithRefreshingBlock:^{ //下拉執行對應的操作 // self.scrollV.contentOffset = CGPointMake(0,0); [UIView animateWithDuration:1 animations:^{ [mainScrollView setContentOffset:CGPointMake(0, - 64)]; }]; //結束載入 [TwoCollectionView.mj_header endRefreshing]; }]; //設定TwoTable 有下拉操作 TwoTable.mj_header = [QRG_MJRefreshNormalHeader headerWithRefreshingBlock:^{ //下拉執行對應的操作 // self.scrollV.contentOffset = CGPointMake(0,0); [UIView animateWithDuration:1 animations:^{ [mainScrollView setContentOffset:CGPointMake(0, - 64)]; }]; //結束載入 [TwoTable.mj_header endRefreshing]; }];}
pragma mark---------Delegate
#pragma mark---------tableDelegate- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ CGFloat height; if([tableView isEqual:OneTable]) { height = 80; }else { return 120; } return height;}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ return 10;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString *Cell = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:Cell]; if(!cell) { cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:Cell]; } cell.textLabel.text = [NSString stringWithFormat:@"%ld--askl",indexPath.row]; cell.imageView.image = [UIImage imageNamed:@"6"]; return cell;}#pragma mark---------CollectionViewDelegate- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{ return 20;}- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{ return CGSizeMake(150, 100);}- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{ static NSString *Coll = @"Coll"; CollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:Coll forIndexPath:indexPath];// cell.backgroundColor =[UIColor greenColor]; return cell;}
以上就是本文的全部內容,希望對大家的學習有所協助,也希望大家多多支援雲棲社區。