MJRefresh刷新Demo

import "YFMVCPostListViewController.h"

import "YFArticleModel.h"

import

import

import

import "YFMVCPostViewController.h"

@interface YFMVCPostListViewController ()
@property (nonatomic, strong) UITableView * tableView;
@property (nonatomic, strong) NSMutableArray * articles; //!< 文章数组,内部存储AFArticleModel类型.
@property (assign, nonatomic) NSInteger page; //!< 数据页数.表示下次请求第几页的数据.

@end

@implementation YFMVCPostListViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view.
  }

• (NSMutableArray *)articles
  {
  if (nil == _articles) {
  _articles = [NSMutableArray arrayWithCapacity: 42];
  }

  return _articles;
  }

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

• (void)viewWillAppear:(BOOL)animated
  {
  [super viewWillAppear: animated];

  // 马上进入刷新状态
  [self.tableView.header beginRefreshing];
  }

• (UITableView *)tableView
  {
  if (nil == _tableView) {
  _tableView = [[UITableView alloc] init];

    [self.view addSubview: _tableView];
  
    [_tableView makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(UIEdgeInsetsMake(0, 0, 0, 0));
    }];
  
    _tableView.delegate = self;
    _tableView.dataSource = self;
  
    NSString * cellReuseIdentifier = NSStringFromClass([UITableViewCell class]);
  
    [_tableView registerClass: NSClassFromString(cellReuseIdentifier) forCellReuseIdentifier:cellReuseIdentifier];
  
    _tableView.header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
        self.page = 0;
  
        [self updateData];
    }];
  
    _tableView.footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{
        [self updateData];
    }];
  

  }

  return _tableView;
  }

/**

• 更新视图.
  */

• (void) updateView
  {
  [self.tableView reloadData];
  }
  /**

• 停止刷新
  /
  -(void)endRefresh{
  [self.tableView.header endRefreshing];
  [self.tableView.footer endRefreshing];
  }
  /*
• 更新数据.
• 数据更新后,会自动更新视图.
  */

• (void)updateData
  {
  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

  NSString * urlStr = [NSString stringWithFormat: @"http://www.ios122.com/find_php/index.php?viewController=YFPostListViewController&model[category]=%@&model[page]=%ld", self.categoryName, (long)self.page ++];

  [manager GET: urlStr parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

    [self endRefresh];
  
    if (1 == self.page) { // 说明是在重新请求数据.
        self.articles = nil;
    }
  
    NSArray * responseArticles = [YFArticleModel objectArrayWithKeyValuesArray: responseObject];
  
    [self.articles addObjectsFromArray: responseArticles];
  
    [self updateView];
  

  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
  [self endRefresh];

    MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
    hud.mode = MBProgressHUDModeText;
    hud.labelText = @"您的网络不给力!";
    [hud hide: YES afterDelay: 2];
  

  }];
  }

pragma mark - tabelView代理方法.

• (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
  {
  NSInteger number = self.articles.count;

  return number;
  }

• (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
  NSString * cellReuseIdentifier = NSStringFromClass([UITableViewCell class]);

  UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: cellReuseIdentifier forIndexPath:indexPath];

  YFArticleModel * model = self.articles[indexPath.row];

  NSString * content = [NSString stringWithFormat: @"标题:%@ 内容:%@", model.title, model.desc];

  cell.textLabel.text = content;

  cell.selectionStyle = UITableViewCellSelectionStyleNone;

  return cell;
  }

• (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
  {
  // 跳转到博客详情.
  YFArticleModel * articleModel = self.articles[indexPath.row];

  YFMVCPostViewController * postVC = [[YFMVCPostViewController alloc] init];

  postVC.articleID = articleModel.id;

  [self.navigationController pushViewController: postVC animated: YES];
  }

@end