iOS表的展开和关闭，单开表

IMG_0103.PNG

思路：定义一个lastIndexPath存上次点击的区头header，定义一个数组sectionTypeArr，存每个区头的开或关，我这里存字符串0和1

self.sectionTypeArr = [NSMutableArray array];
    for (int i = 0; i<10; i++) {
        // 0-关闭 1-打开
        [self.sectionTypeArr addObject:@"0"];
    }

section的点击事件，处理区头的展开和关闭

- (void)sectionClick:(UITapGestureRecognizer *)gesture{
    LHWalletTransacationRecordHeaderView *headerView = (LHWalletTransacationRecordHeaderView *)gesture.view;
    NSIndexPath *currentIndexPath = [NSIndexPath indexPathWithIndex:headerView.tag];
    
    NSString *type = self.sectionTypeArr[headerView.tag];
    if ([type isEqualToString:@"0"]) {
        //之前关闭
        type = @"1";
        
        if (self.lastIndexPath) {
            [self.sectionTypeArr replaceObjectAtIndex:self.lastIndexPath.section withObject:@"0"];
            [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:self.lastIndexPath.section] withRowAnimation:UITableViewRowAnimationFade];
        }
    }else{
        //之前打开的
        type = @"0";
    }
    [self.sectionTypeArr replaceObjectAtIndex:headerView.tag withObject:type];
    [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:headerView.tag] withRowAnimation:UITableViewRowAnimationFade];
    self.lastIndexPath = currentIndexPath;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return self.sectionTypeArr.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    NSString *type = self.sectionTypeArr[section];
    return [type isEqual:@"0"]?0:4;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
    return 45;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
    LHWalletTransacationRecordHeaderView *headerView = [LHWalletTransacationRecordHeaderView new];
    
    NSString *type = self.sectionTypeArr[section];
    headerView.orOPen = [type isEqualToString:@"1"]?YES:NO;
    
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(sectionClick:)];
    headerView.tag = section;
    [headerView addGestureRecognizer:tap];
    return headerView;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
    return cell;
}