tableview二级联动

#import "ViewController.h" #import "leftViewController.h" @interface ViewController () @end   @implementation ViewController   - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.view.backgroundColor = [UIColor whiteColor];   UIButton *bution = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 100, 50)]; bution.center = self.view.center; bution.backgroundColor = [UIColor redColor]; [bution addTarget:self action:@selector(butionCleck:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:bution]; }   -(void)butionCleck:(UIButton *)sender{ leftViewController *leftVC = [leftViewController new]; [self.navigationController pushViewController:leftVC animated:YES]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end

leftViewController.h

Objective-C

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#import @interface leftViewController :     UIViewController @end

leftViewController.m

Objective-C

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#import "leftViewController.h" #import "rightViewController.h"   @interface leftViewController () @property(nonatomic,strong)UITableView *leftTableView; @property(nonatomic,strong)NSArray *leftDataArr; @property(nonatomic,strong)rightViewController *rightVC; @end   @implementation leftViewController   - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.view.backgroundColor = [UIColor whiteColor];   [self.view addSubview:self.leftTableView]; [self creatRightVC]; }   -(void)creatRightVC{ self.rightVC = [rightViewController new];   self.rightVC.delegate = self; [self addChildViewController:_rightVC]; [self.view addSubview:_rightVC.view]; }       -(UITableView *)leftTableView{ if (!_leftTableView) {     _leftTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, 120, self.view.frame.size.height) style:UITableViewStylePlain];     _leftTableView.showsVerticalScrollIndicator = NO;     _leftTableView.delegate = self;     _leftTableView.dataSource = self;     [_leftTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell11"]; } return _leftTableView; }   -(NSArray *)leftDataArr{ if (!_leftDataArr) {     _leftDataArr = @[@"第一类",                      @"第二类",                      @"第三类",                      @"第四类",                      @"第五类",                      @"第六类",                      @"第七类",                      @"第八类",                      @"第九类",                      @"第十类",                      @"第十一类",                      @"第十二类",                      @"第十三类",                      @"第十四类",                      @"第十五类",                      @"第十六类",                      @"第十七类",                      @"第十八类",                      @"第十九类",                      @"第二十类",                      @"第二十一类"                      ]; } return _leftDataArr; }   -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ return 1; }   - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ return self.leftDataArr.count; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell11" forIndexPath:indexPath]; cell.textLabel.text = self.leftDataArr[indexPath.row]; return cell; }   -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{   NSLog(@"-----%ld",indexPath.row); if (self.rightVC) {       [self.rightVC scrollToSelectIndexPath:indexPath]; } }   /* 代理右边选择时执行代理. */ -(void)rightViewControllerDelegate:(rightViewController *)vc withIndexPatch:(NSIndexPath *)ptch{ [self.leftTableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:ptch.section inSection:0] animated:YES scrollPosition:UITableViewScrollPositionMiddle]; }     -(void)rightViewControllerDelegateHeaderViewAppear:(rightViewController*)vc withIndexPatch:(NSInteger)section{ [self.leftTableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:section inSection:0] animated:YES scrollPosition:UITableViewScrollPositionMiddle]; }   -(void)rightViewControllerDelegateHeaderViewdisappear:(rightViewController *)vc withIndexPatch:(NSInteger)section{   [self.leftTableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:section inSection:0] animated:YES scrollPosition:UITableViewScrollPositionMiddle]; }     - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. }   @end

rightViewController.h

Objective-C

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#import @class rightViewController; @protocol rightViewControllerDeldgate -(void)rightViewControllerDelegate:(rightViewController *)vc withIndexPatch:(NSIndexPath *)ptch; -(void)rightViewControllerDelegateHeaderViewAppear:(rightViewController *)vc withIndexPatch:(NSInteger )section; -(void)rightViewControllerDelegateHeaderViewdisappear:(rightViewController *)vc withIndexPatch:(NSInteger )section; @end     @interface rightViewController : UIViewController   @property(nonatomic,weak)id  delegate;   -(void)scrollToSelectIndexPath:(NSIndexPath *)path; @end

rightViewController.m

Objective-C

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#import "rightViewController.h"   @interface rightViewController () @property(nonatomic,strong)UITableView *rightTableView; @property(nonatomic,strong)NSArray *rightDataArr; @property(nonatomic,assign)BOOL isScrollUp; @property(nonatomic, assign)CGFloat lastOffsetY;//滚动即将结束时scrollView的偏移量 @property(nonatomic,assign)BOOL ifScroll; //当左边cell点击-> 右边滑动-> 右边滑动头消失头出现就会执行代理->代理方法再让左边滑动      给个boll值设置为NO就是为了 点击左边cell右边头出现或者消失 都不执行代理方法 左边也不会滑动. @end   @implementation rightViewController   -(UITableView *)rightTableView{ if (!_rightTableView) {     _rightTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0,self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStylePlain];     _rightTableView.showsVerticalScrollIndicator = NO;     _rightTableView.delegate = self;     _rightTableView.dataSource =self;     [_rightTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];     [_rightTableView registerClass:[UITableViewHeaderFooterView class] forHeaderFooterViewReuseIdentifier:@"headerView"]; } return _rightTableView; }   -(NSArray *)rightDataArr{ if (!_rightDataArr) {     _rightDataArr = @[   @[@"1橘子",@"西瓜",@"哈密瓜",@"苹     果",@"柚子",@"香蕉"], @[@"2华为手机",@"苹果5",@"苹果5s",@"苹果6",@"苹果6+",@"苹果6s",@"苹果6s+"], @[@"3联想电脑",@"华硕电脑",@"MAC"], @[@"4鸡肉",@"鸭肉",@"牛肉",@"猪肉",@"羊肉"], @[@"5香菇",@"蘑菇",@"大头菜",@"青椒"], @[@"6花生油",@"大豆油",@"葵花籽油",@"芝   麻香油"], @[@"7花椒",@"陈皮",@"八角"], @[@"8橘子",@"西瓜",@"哈密瓜",@"苹果",@"柚子",@"香蕉"], @[@"9华为手机",@"苹果5",@"苹果5s",@"苹果6",@"苹果6+",@"苹果6s",@"苹果6s+"], @[@"10联想电脑",@"华硕电脑",@"MAC"], @[@"11鸡肉",@"鸭肉",@"牛肉",@"猪肉",@"羊肉"], @[@"12香菇",@"蘑菇",@"大头菜",@"青椒"], @[@"13花生油",@"大豆油",@"葵花籽油",@"芝麻香油"], @[@"14花椒",@"陈皮",@"八角"], @[@"15橘子",@"西瓜",@"哈密瓜",@"苹果",@"柚子",@"香蕉"], @[@"16华为手机",@"苹果5",@"苹果5s",@"苹果6",@"苹果6+",@"苹果6s",@"苹果6s+"], @[@"17联想电脑",@"华硕电脑",@"MAC"], @[@"18鸡肉",@"鸭肉",@"牛肉",@"猪肉",@"羊肉"], @[@"19香菇",@"蘑菇",@"大头菜",@"青椒"], @[@"20花生油",@"大豆油",@"葵花籽油",@"芝麻香油"], @[@"21花椒",@"陈皮",@"八角"] ]; } return _rightDataArr; }   -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ return self.rightDataArr.count; }   - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{   NSArray *arr = self.rightDataArr[section]; return arr.count; }   - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath]; NSArray * data = self.rightDataArr[indexPath.section];   cell.textLabel.text = data[indexPath.row]; return cell; }   - (nullable UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{ UITableViewHeaderFooterView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"headerView"];   headerView.textLabel.text = [NSString stringWithFormat:@"第%ld区",section+1]; return headerView; }     -(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{ return 30; }     - (void)viewDidLoad { [super viewDidLoad];   self.view.frame = CGRectMake(120, 64,self.view.frame.size.width-120, self.view.frame.size.height-64); self.view.backgroundColor = [UIColor redColor]; [self.view addSubview:self.rightTableView];   } -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ if (_delegate && [_delegate respondsToSelector:@selector(rightViewControllerDelegate:withIndexPatch:)]) {     [_delegate rightViewControllerDelegate:self withIndexPatch:indexPath]; } }   //头将出现 -(void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section{ if (_delegate && [self.delegate respondsToSelector:@selector(rightViewControllerDelegateHeaderViewAppear:withIndexPatch:)] && !_isScrollUp && _ifScroll) {     [_delegate rightViewControllerDelegateHeaderViewAppear:self withIndexPatch:section]; } } //头讲消失 -(void)tableView:(UITableView *)tableView didEndDisplayingHeaderView:(UIView *)view forSection:(NSInteger)section{   if (_delegate && [self.delegate respondsToSelector:@selector(rightViewControllerDelegateHeaderViewdisappear:withIndexPatch:)] && _isScrollUp &&_ifScroll) {     //上滑才执行     [_delegate rightViewControllerDelegateHeaderViewdisappear:self withIndexPatch:section+1]; } }   //主要判断向上滑动还是向下滑动 -(void)scrollViewDidScroll:(UIScrollView *)scrollView{ _isScrollUp = _lastOffsetY