先說下實現(xiàn)的效果，用戶點擊某個分組，展示該分組的列表钟沛，在展示的同時奴艾，用戶不能通過上下滑動來滑動TableView看杭，在用戶點擊分組的時候，該分組會移動貼近導(dǎo)航欄。類似這樣的效果。思路和上一篇的UICollectionView分組類似涎跨，下面是效果圖:

qh_2.gif

實現(xiàn)的代碼全貼上去，有什么疑問可以在評論里說

@interface ViewController ()<UITableViewDelegate, UITableViewDataSource>
{
    NSInteger openSection;
}
@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) NSMutableArray *aArr;
@property (nonatomic, strong) NSMutableArray *bArr;
@property (nonatomic, strong) NSMutableArray *cArr;
@property (nonatomic, strong) NSMutableArray *dataArr;

@property (nonatomic, assign) BOOL isDo;
@end

@implementation ViewController
static NSString *const cellID = @"cell";
- (UITableView *)tableView {
    if (!_tableView) {
        _tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];
        _tableView.delegate = self;
        _tableView.dataSource = self;
        [_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:cellID];
    }
    return _tableView;
}
- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.title = @"分組";
    _isDo = NO;
    openSection = -1;
    [self.view addSubview:self.tableView];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return self.dataArr.count;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
    button.frame = CGRectMake(0, 0, self.view.frame.size.width, 44);
    button.backgroundColor = [UIColor cyanColor];
    [button setTitle:[NSString stringWithFormat:@"%ld", section] forState:UIControlStateNormal];
    [button addTarget:self action:sel_registerName("doOpen:") forControlEvents:UIControlEventTouchUpInside];
    button.tag = section + 1000;
    return button;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
    return 44;
}
- (void)doOpen:(UIButton *)sender {
    if (openSection == sender.tag - 1000) {
        _isDo = !_isDo;
        [self.tableView reloadData];
    } else {
        _isDo = NO;
        openSection = sender.tag - 1000;
        [self.tableView reloadData];
    }
    if (!_isDo) {
        self.tableView.scrollEnabled = NO; // 打開狀態(tài) 不能滑動
        [self.tableView setContentOffset:CGPointMake(0, openSection * 44 - 64) animated:YES];
    } else {
        self.tableView.scrollEnabled = YES; // 關(guān)閉狀態(tài) 能夠滑動
    }
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    if (section == openSection) {
        if (_isDo) { // YES 為打開過
            return 0;
        } // 沒打開過
        return [self.dataArr[openSection] count];
    }
    return 0;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID forIndexPath:indexPath];
    cell.textLabel.text = [_dataArr[indexPath.section][indexPath.row] stringValue];
    return cell;
}

- (NSMutableArray *)aArr {
    if (!_aArr) {
        _aArr = [NSMutableArray arrayWithObjects:@111,@222,@333,@444,@555,@666,@777, nil];
    }
    return _aArr;
}
- (NSMutableArray *)bArr {
    if (!_bArr) {
        _bArr = [NSMutableArray arrayWithObjects:@2222,@4444,@6666,@8888,@1111, nil];
    }
    return _bArr;
}
- (NSMutableArray *)cArr {
    if (!_cArr) {
        _cArr = [NSMutableArray arrayWithObjects:@33333,@55555,@77777,@99999,@11111,@22222,@33333, nil];
    }
    return _cArr;
}
- (NSMutableArray *)dataArr {
    if (!_dataArr) {
        _dataArr = [NSMutableArray arrayWithObjects:self.aArr,self.bArr,self.cArr, nil];
    }
    return _dataArr;
}

該分組效果是在某個App下看到的崭歧，于是就根據(jù)那個效果敲了這個分組給大家分享下隅很。

qh_1.png