iOS 左右滑动视图效果实现

Untitled.gif

#import "ViewController.h"
#import "LRSlideView.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    LRSlideView *lrslideView = [[LRSlideView alloc] initWithFrame:CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height - 64) titleAry:@[@"表一",@"表二",@"表三",@"表四"]];
    [self.view addSubview:lrslideView];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end
#import <UIKit/UIKit.h>
@interface LRSlideView : UIView
- (instancetype)initWithFrame:(CGRect)frame titleAry:(NSArray *)titleAry;
@end
#import "LRSlideView.h"
#import "LRSlideCollectionCell.h"
#import "LRSlideHeaderView.h"
#define KWidth self.frame.size.width
#define KHeight self.frame.size.height
#define KHeaderHeight 30
@interface LRSlideView ()<UICollectionViewDelegate,UICollectionViewDataSource>
@property (nonatomic,strong)UICollectionView *collectionView;
@property (nonatomic,strong)UICollectionViewFlowLayout *flowLayout;
@property (nonatomic,strong)LRSlideHeaderView *headerView;
@property (nonatomic,strong)NSArray *titleAry;
@end
static NSString *identifier = @"UICollectionCell";
@implementation LRSlideView
- (instancetype)initWithFrame:(CGRect)frame titleAry:(NSArray *)titleAry{
    if (self = [super initWithFrame:frame]) {
        self.titleAry = [NSArray arrayWithArray:titleAry];
        self.backgroundColor = [UIColor whiteColor];
        [self setup];
    }
    return self;
}
// 设置布局样式
- (UICollectionViewFlowLayout *)flowLayout{
    if (!_flowLayout) {
        self.flowLayout = [[UICollectionViewFlowLayout alloc] init];
        _flowLayout.itemSize = CGSizeMake(KWidth, KHeight - KHeaderHeight);
        _flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
        _flowLayout.minimumLineSpacing = 0;
        _flowLayout.minimumLineSpacing = 0;
        _flowLayout.sectionInset = UIEdgeInsetsMake(0, 0, 0, 0);
    }
    return _flowLayout;
}
// 初始化左右滑动视图collection
- (UICollectionView *)collectionView{
    if (!_collectionView) {
        self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, KHeaderHeight, KWidth, KHeight - KHeaderHeight) collectionViewLayout:self.flowLayout];
        _collectionView.backgroundColor = [UIColor whiteColor];
        _collectionView.delegate = self;
        _collectionView.dataSource = self;
        _collectionView.pagingEnabled = YES;
        _collectionView.showsHorizontalScrollIndicator = NO;
        [self registHelperCell];
    }
    return _collectionView;
}
// 注册相关cell
- (void)registHelperCell{
    [self.collectionView registerClass:[LRSlideCollectionCell class] forCellWithReuseIdentifier:identifier];
}
// 初始化头视图
- (UIView *)headerView{
    if (!_headerView) {
        self.headerView = [[LRSlideHeaderView alloc] initWithFrame:CGRectMake(0, 0, KWidth, KHeaderHeight) titleAry:self.titleAry];
        [self customHeaderViewClock];
    }
    return _headerView;
}
// 设置头部标题栏点击事件
- (void)customHeaderViewClock{
    [self.headerView customHeaderCellClick:^(NSInteger index) {
        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:index inSection:0];
        [self.collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:(UICollectionViewScrollPositionNone) animated:YES];
    }];
}
// 设置子视图
- (void)setup{
    // 添加头视图
    [self addSubview:self.headerView];
    // 将collectionView添加在视图上
    [self addSubview:self.collectionView];
}
#pragma mark - collectionView的代理方法 -
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    if (!self.titleAry) {return 0;}
    return self.titleAry.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    LRSlideCollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];
    cell.backgroundColor = [UIColor redColor];
    return cell;
}

@end
#import <UIKit/UIKit.h>
typedef void(^HeaderCellClick)(NSInteger index);
@interface LRSlideHeaderView : UIView
- (instancetype)initWithFrame:(CGRect)frame titleAry:(NSArray *)titleAry;
- (void)customHeaderCellClick:(HeaderCellClick)headerCellClick;
@end
#import "LRSlideHeaderView.h"
#import "LRSlideHeaderCell.h"
@interface LRSlideHeaderView ()<UICollectionViewDelegate,UICollectionViewDataSource>
@property (nonatomic,strong)UICollectionView *collectionView;
@property (nonatomic,strong)UICollectionViewFlowLayout *flowLayout;
@property (nonatomic,strong)NSArray *titleAry;
@property (nonatomic,copy)HeaderCellClick headerCellClick;
@end
static NSString *LRSlideHeaderCellIdentifier = @"LRSlideHeaderCell";
@implementation LRSlideHeaderView
- (instancetype)initWithFrame:(CGRect)frame titleAry:(NSArray *)titleAry
{
    self = [super initWithFrame:frame];
    if (self) {
        self.titleAry = [NSArray arrayWithArray:titleAry];
        [self setup];
    }
    return self;
}
// 初始化布局
- (UICollectionViewFlowLayout *)flowLayout{
    if (!_flowLayout) {
        self.flowLayout = [[UICollectionViewFlowLayout alloc] init];
        _flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
        _flowLayout.itemSize = CGSizeMake(self.frame.size.width / self.titleAry.count, self.frame.size.height);
        _flowLayout.minimumLineSpacing = 0;
        _flowLayout.minimumLineSpacing = 0;
        _flowLayout.sectionInset = UIEdgeInsetsMake(0, 0, 0, 0);
    }
    return _flowLayout;
}
// 初始化collectionView
- (UICollectionView *)collectionView{
    if (!_collectionView) {
        self.collectionView = [[UICollectionView alloc] initWithFrame:self.frame collectionViewLayout:self.flowLayout];
        _collectionView.backgroundColor = [UIColor whiteColor];
        _collectionView.delegate = self;
        _collectionView.dataSource = self;
        _collectionView.showsHorizontalScrollIndicator = NO;
        [self registHelperCell];
    }
    return _collectionView;
}
- (void)registHelperCell{
    [self.collectionView registerClass:[LRSlideHeaderCell class] forCellWithReuseIdentifier:LRSlideHeaderCellIdentifier];
}
// 设置子视图
- (void)setup{
    // 添加collectionView视图
    [self addSubview:self.collectionView];
}
#pragma mark - collectionView的代理方法 -
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    return self.titleAry.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    LRSlideHeaderCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:LRSlideHeaderCellIdentifier forIndexPath:indexPath];
    cell.label.text = self.titleAry[indexPath.row];
    return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
    if (self.headerCellClick) {
        self.headerCellClick(indexPath.row);
    }
}
// 设置cell点击回调block
- (void)customHeaderCellClick:(HeaderCellClick)headerCellClick{
    self.headerCellClick = headerCellClick;
}
@end
#import <UIKit/UIKit.h>
@interface LRSlideHeaderCell : UICollectionViewCell
@property (nonatomic,strong)UILabel *label;
@end

#import "LRSlideHeaderCell.h"

@implementation LRSlideHeaderCell
- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self setup];
    }
    return self;
}
// 设置子视图
- (void)setup{
    self.label = [[UILabel alloc] initWithFrame:self.contentView.bounds];
    _label.textAlignment = NSTextAlignmentCenter;
    _label.font = [UIFont systemFontOfSize:12];
    _label.layer.borderWidth = 1;
    _label.layer.borderColor = [UIColor lightGrayColor].CGColor;
    [self.contentView addSubview:_label];
}
@end

#import <UIKit/UIKit.h>

@interface LRSlideCollectionCell : UICollectionViewCell
// 如果要是给tableView添加数据,就在这个cell里面做操作
@end

#import "LRSlideCollectionCell.h"
#import "LRSlideTableCell.h"
@interface LRSlideCollectionCell ()<UITableViewDelegate,UITableViewDataSource>
@property (nonatomic,strong)UITableView *tableView;
@end
static NSString *LRSlideTableCellIdentifier = @"LRSlideTableCellIdentifier";
@implementation LRSlideCollectionCell
- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self setup];
    }
    return self;
}
// 初始化上下滑动tableView
- (UITableView *)tableView{
    if (!_tableView) {
        self.tableView = [[UITableView alloc] initWithFrame:self.contentView.frame];
        _tableView.delegate = self;
        _tableView.dataSource = self;
        [self registHelperCell];
    }
    return _tableView;
}
// 注册cell
- (void)registHelperCell{
    [self.tableView registerClass:[LRSlideTableCell class] forCellReuseIdentifier:LRSlideTableCellIdentifier];
}
// 设置子视图
- (void)setup{
    // 添加子视图
    [self.contentView addSubview:self.tableView];
}
#pragma mark - tableView的代理方法 -
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return 3;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    LRSlideTableCell *cell = [tableView dequeueReusableCellWithIdentifier:LRSlideTableCellIdentifier forIndexPath:indexPath];
    cell.textLabel.text = @"11111111111";
    return cell;
}
@end
#import "LRSlideTableCell.h"
@implementation LRSlideTableCell

@end

#import <UIKit/UIKit.h>

@interface LRSlideTableCell : UITableViewCell

@end