IOS仿支付宝首页滑动效果

项目来源翻译大神的swift 本版为objectc版本，
大神地址：
这里写链接内容

一.效果图如下：

没什么逻辑可讲述的，直接给源码吧：

//
//  ViewController.m
//  ZFBHome
//
//  Created by 刘xx on 2018/6/12.
//  Copyright © 2018 liuxx. All rights reserved.
//#import "ViewController.h"
#import "HeadView.h"#define SCREEN_HEIGHT                      [UIScreen mainScreen].bounds.size.height
#define SCREEN_WIDTH                       [UIScreen mainScreen].bounds.size.width@interface ViewController ()<UITableViewDelegate,UITableViewDataSource,UIScrollViewDelegate>@property (nonatomic) UIView *coverNavView;
@property (nonatomic) UIView *mainNavView;
@property (nonatomic) HeadView *headerView;@property (nonatomic) UITableView *tableView;@property (nonatomic) HeadView * childView;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];[self buildUI];}-(void) buildUI{self.coverNavView = [[UIView alloc] initWithFrame:CGRectMake(0, 20, SCREEN_WIDTH, 64)];self.coverNavView.alpha = 0;self.coverNavView.backgroundColor = [UIColor blueColor];[self.view addSubview:self.coverNavView];UIButton *scan_mini = [UIButton buttonWithType:UIButtonTypeCustom];scan_mini.frame = CGRectMake(10,(64 - 35) / 2,35,35);[scan_mini setImage:[UIImage imageNamed:@"pay_mini@2x"] forState:UIControlStateNormal];[self.coverNavView addSubview:scan_mini];UIButton *pay_mini = [UIButton buttonWithType:UIButtonTypeCustom];pay_mini.frame = CGRectMake(60,(64 - 35) / 2,35,35);[pay_mini setImage:[UIImage imageNamed:@"pay_mini@2x"] forState:UIControlStateNormal];[self.coverNavView addSubview:pay_mini];UIButton *add = [UIButton buttonWithType:UIButtonTypeCustom];add.frame = CGRectMake(SCREEN_WIDTH - 60,(64 - 35) / 2,35,35);[add setImage:[UIImage imageNamed:@"pay_mini@2x"] forState:UIControlStateNormal];[self.coverNavView addSubview:add];self.mainNavView = [[UIView alloc] initWithFrame:CGRectMake(0, 20, SCREEN_WIDTH, 64)];self.mainNavView.backgroundColor = [UIColor blueColor];[self.view addSubview:self.mainNavView];UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(10, 8, 322, 44)];searchBar.text = @"游戏";[self.mainNavView addSubview:searchBar];UIButton *contact = [UIButton buttonWithType:UIButtonTypeCustom];contact.frame = CGRectMake(SCREEN_WIDTH - 60,(64 - 35) / 2,35,35);[contact setImage:[UIImage imageNamed:@"home_contacts@2x"] forState:UIControlStateNormal];[self.mainNavView addSubview:contact];//构建导航与菜单栏self.childView = [[HeadView alloc] init];//构建滚动列表self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 84, SCREEN_WIDTH, SCREEN_HEIGHT - 84) style: UITableViewStylePlain];self.tableView.delegate = self;self.tableView.dataSource = self;self.headerView = self.childView;self.headerView.frame = CGRectMake(0, 0, SCREEN_WIDTH, 305);[self.tableView addSubview:self.headerView];self.tableView.tableHeaderView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 305)];self.tableView.scrollIndicatorInsets = UIEdgeInsetsMake(305, 0, 0, 0);[self.view addSubview:self.tableView];}- (void)viewDidLayoutSubviews{[super viewDidLayoutSubviews];self.headerView.frame = CGRectMake(0, 0, SCREEN_WIDTH, 305);
}- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{return 15;
}static NSString* cellID = @"cellID";- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{UITableViewCell* tableViewCell = [tableView dequeueReusableCellWithIdentifier:cellID];if (tableViewCell == nil) {tableViewCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];}tableViewCell.textLabel.text = @"test";return tableViewCell;
}//实现滚动UIScrollViewDelegate 协议
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{CGFloat offsetY = scrollView.contentOffset.y;if(offsetY > 0 && offsetY < 24){[self.tableView setContentOffset:CGPointMake(0, 0) animated:true];}else if(offsetY >= 24 && offsetY < 95){[self.tableView setContentOffset:CGPointMake(0, 95) animated:true];}
}- (void)scrollViewDidScroll:(UIScrollView *)scrollView{CGFloat offsetY = scrollView.contentOffset.y;if(offsetY <= 0){self.headerView.frame = CGRectMake(0, offsetY, SCREEN_WIDTH, 305);[self.childView changAlpha:1];self.coverNavView.alpha = 0;self.mainNavView.alpha = 1;}else if(offsetY > 0 && offsetY < 95){CGFloat alpha = (1 - offsetY / 95) > 0 ? (1 - offsetY / 95) : 0;[self.childView changAlpha:alpha / 3];if(alpha > 0.9){self.coverNavView.alpha = 0;self.mainNavView.alpha = alpha / 5;}else{self.mainNavView.alpha = 0;self.coverNavView.alpha = 1 - alpha;if(alpha <= 0.75){[self.childView changAlpha:0];}}}}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];}@end

headView.h:

//
//  HeadView.h
//  ZFBHome
//
//  Created by 刘小兵 on 2018/6/12.
//  Copyright © 2018 liuxx. All rights reserved.
//  头部视图 主要包括 可变化导航视图的与 网格菜单视图#import <UIKit/UIKit.h>@interface HeadView : UIView<UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout>@property(nonatomic,strong) UIView* headTopView;
@property(nonatomic,strong) UICollectionView* menuView;-(void) changAlpha:(CGFloat) alpha;@end

headView.m

//
//  HeadView.m
//  ZFBHome
//
//  Created by 刘小兵 on 2018/6/12.
//  Copyright © 2018 liuxx. All rights reserved.
//#import "HeadView.h"
#import "UIButton+ImgLabel.h"#define SCREEN_HEIGHT                      [UIScreen mainScreen].bounds.size.height
#define SCREEN_WIDTH                       [UIScreen mainScreen].bounds.size.width@implementation HeadView-(instancetype) initWithFrame:(CGRect)frame{if(self = [super initWithFrame:frame]){[self initView];}return self;
}-(void) initView{NSLog(@"26-----------");//构建头部视图容器self.headTopView = [[UIView alloc] initWithFrame:CGRectMake(0, 20, SCREEN_WIDTH, 95)];self.headTopView.backgroundColor = [UIColor cyanColor];[self addSubview:self.headTopView];UIButton* scanBtn = [UIButton buttonWithType:UIButtonTypeCustom];scanBtn.frame = CGRectMake(10, 7.5, 100, 80);scanBtn.backgroundColor = [UIColor redColor];[scanBtn setImage:[UIImage imageNamed:@"home_scan@2x"] forState:UIControlStateNormal];[scanBtn setTitle:@"scan" forState:UIControlStateNormal];[scanBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];[scanBtn layoutButtonWithEdgeInsetsStyle:MKButtonEdgeInsetsStyleBottom imageTitleSpace:10];[self.headTopView addSubview:scanBtn];//1.初始化layoutUICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];self.menuView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 95, SCREEN_WIDTH, 240) collectionViewLayout:layout];self.menuView.dataSource = self;self.menuView.delegate = self;self.menuView.backgroundColor = [UIColor whiteColor];[self.menuView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"collectionCell"];[self addSubview:self.menuView];}-(void) changAlpha:(CGFloat)alpha{self.headTopView.alpha = alpha;
}//实现协议方法
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{return 1;
}- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{return 12;
}- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"collectionCell" forIndexPath:indexPath];cell.backgroundColor = [UIColor cyanColor];return cell;
}- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{CGFloat width = (SCREEN_WIDTH - 100) / 4;return CGSizeMake(width, 50);
}- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section{return 20;
}- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section{return UIEdgeInsetsMake(10, 15, 10, 15);}@end

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