一个tableview的自带动画

 

 

最近在实习，这是最近老师叫做的项目里面的一个东西，先以为很难，做了很久也没做出来，后面老师讲了之后发现其实很简单，现在分享上来给大家。

 

说一下他的主要逻辑，其实就是设置了几个section ，section的headview需要自定义。。存了几个字典在datasoure（也就是一个数组当中）。字典里面有个bool值判断是否展开section，也就是是否添加cell进section里面。添加进去的时候tableview自带了动画所以看起来就跟上面一样了。删除同理，只是把cell移除了而已。逻辑真的很简单。因为最近很忙，就直接把项目的代码贴上了。没有注释的地方也请多多包涵。

 

[super viewDidLoad];

    //

    [self setEdgesForExtendedLayout:UIRectEdgeNone];//避免布局上移

    

    // Uncomment the following line to preserve selection between presentations.

    // self.clearsSelectionOnViewWillAppear = NO;

    

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.

    // self.navigationItem.rightBarButtonItem = self.editButtonItem;

    

    //    _dataSource = @{@"面试": @[@"自我介绍", @"如何回答面试官的问题"] ,

    //                    @"薪资": @[@"谈钱牢记四句话", @"面试获高薪资的实战技巧"],

    //                    @"简历": @[@"HR是这样看简历的"]};

    

    self.view.backgroundColor = [UIColor whiteColor];

    self.tableView.backgroundColor = [UIColor whiteColor];

    

    _dataSource = [[NSMutableArray alloc] init];

    

    

    //初始化一条数

    NSDictionary * oraldic1 = @{@"title": @"自我介绍"};

    NSDictionary * oraldic2 = @{@"title": @"如何回答面试官的问题"};

    

    NSArray * oralarray = @[oraldic1, oraldic2];

    

    NSMutableDictionary * dictionary = [[NSMutableDictionary alloc] init];

    [dictionary setObject:oralarray forKey:@"detail"];

    [dictionary setObject:@(NO) forKey:@"isFold"];

    [dictionary setObject:@"面试" forKey:@"title"];

    

    //将数据加入数据源中

    [_dataSource addObject:dictionary];

    

    //初始化第二条数据

    NSDictionary * saldic1 = @{@"title": @"谈钱牢记四句话"};

    NSDictionary * saldic2 = @{@"title": @"面试获高薪资的实战技巧"};

    

    NSArray * salarray = @[saldic1, saldic2];

    NSMutableDictionary * salDictionary = [[NSMutableDictionary alloc] init];

    [salDictionary setObject:salarray forKey:@"detail"];

    [salDictionary setObject:@(NO) forKey:@"isFold"];

    [salDictionary setObject:@"薪资" forKey:@"title"];

    

    [_dataSource addObject:salDictionary];

    

       NSDictionary *dic3=@{@"title":@"HR时这样看简历的"};

      NSArray *arr=@[dic3];

    NSMutableDictionary *saldic=[[NSMutableDictionary alloc]init];

    [saldic setObject:arr forKey:@"detail"];

    [saldic setObject:@(NO) forKey:@"isFold"];

    [saldic setObject:@"简历" forKey: @"title"];

   [_dataSource addObject:saldic];

   

    

    //配置tableview

    self.tableView.rowHeight = 40;

    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

    

    //添加刷新功能

    self.refreshControl = [[UIRefreshControl alloc] init];

    self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"下拉刷新"];

    self.refreshControl.tintColor = [UIColor redColor];

    [self.refreshControl addTarget:self action:@selector(doRefreshProcess) forControlEvents:UIControlEventValueChanged];

}



- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}



#pragma mark - Table view data source



- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    // Return the number of sections.

    

    

    return [_dataSource count];

}



- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    // Return the number of rows in the section.

    

    //得到header状态

    BOOL flag = [_dataSource[section][@"isFold"] boolValue];

    return flag ? [_dataSource[section][@"detail"] count] : 0;

}





- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    

    static NSString * identify = @"reuseIdentifier";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identify];

    if (!cell) {

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identify];

    }

    NSString * key = _dataSource[indexPath.section][@"detail"][indexPath.row][@"title"];

    

    cell.textLabel.text = key;

    

    return cell;

}



//- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

//{

//    return _dataSource[section][@"title"];

//}



//创建tableview 头

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section

{

    NSString *sectionIdentifier = @"mySection";

    UITableViewHeaderFooterView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:sectionIdentifier];

    headerView.userInteractionEnabled = YES;

    if (!headerView) {

        //大标题label

        headerView = [[UITableViewHeaderFooterView alloc]initWithReuseIdentifier:sectionIdentifier];

        headerView.contentView.backgroundColor = [UIColor whiteColor];

        UILabel *textLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 300, 50)];

        textLabel.tag = 201;

        textLabel.textColor = [UIColor blackColor];

        textLabel.backgroundColor = [UIColor whiteColor];

        textLabel.font = [UIFont boldSystemFontOfSize:20];

        [headerView.contentView addSubview:textLabel];

        

        UILabel *lineLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 45, 375, 1)];

        lineLabel.backgroundColor = [UIColor colorWithWhite:0.9 alpha:1.0];

        [headerView.contentView addSubview:lineLabel];

        

        //展开按钮

        UIButton *openBtn = [[UIButton alloc] initWithFrame:CGRectMake(330, 5, 40, 40)];

        openBtn.tag = 202;

        openBtn.backgroundColor = [UIColor redColor];

        [openBtn.titleLabel setFont:[UIFont systemFontOfSize:20]];

        [openBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

        [openBtn setImage:[UIImage imageNamed:@"inter_open"] forState:UIControlStateNormal];

        [openBtn setImage:[UIImage imageNamed:@"inter_close"] forState:UIControlStateSelected];

        [openBtn addTarget:self action:@selector(doFoldAndUnfold:) forControlEvents:UIControlEventTouchUpInside];

        [headerView.contentView addSubview:openBtn];

    }

    

    UILabel *textLabel = (UILabel *)[headerView viewWithTag:201];

    textLabel.text = _dataSource[section][@"title"];

    UIButton *sectionBtn = (UIButton *)[headerView viewWithTag:202];

    //得到展开状态

    BOOL flag = [_dataSource[section][@"isFold"] boolValue];

    sectionBtn.selected = flag ? YES : NO;

    sectionBtn.tag = 300 + section;//重新设定tag值

    

    return headerView;

}



- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

{

    return 50;

}



-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    LMdetailController *detail=[[LMdetailController alloc]init];

    [self.navigationController pushViewController:detail animated:YES];

}



- (void)doFoldAndUnfold:(UIButton *)sender

{

    //修改按钮点击状态

    sender.selected = !sender.selected;

    

    NSInteger section = sender.tag - 300;//得到哪组

    //得到数据

    //首先确定展开之后多少行

    NSMutableArray * indexArray = [[NSMutableArray alloc] init];

    NSInteger count = [_dataSource[section][@"detail"] count];

    for (int i = 0; i < count; i ++) {

        NSIndexPath * path = [NSIndexPath indexPathForRow:i inSection:section];

        [indexArray addObject:path];

    }

    

    //同步数据源中的展开状态

    [_dataSource[section] setObject:@(sender.selected) forKey:@"isFold"];

    

    //开始展开动画

    if (sender.selected) {

        [self.tableView insertRowsAtIndexPaths:indexArray withRowAnimation:UITableViewRowAnimationTop];

    } else {

        [self.tableView deleteRowsAtIndexPaths:indexArray withRowAnimation:UITableViewRowAnimationTop];

    }

    

}



- (void)doRefreshProcess

{

    [self.refreshControl beginRefreshing];

    self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"刷新中..."];

    NSLog(@"开始刷新");

    

    //模拟网络请求延时处理

    [self performSelector:@selector(refreshUserInterface) withObject:nil afterDelay:1.0];

}



- (void)refreshUserInterface

{

    

    [self.refreshControl endRefreshing];

    self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"下拉刷新"];

    NSLog(@"结束");

    //重新刷新tableview

    [self.tableView reloadData];

}