1 #import "RootViewController.h"  2 #import "MJRefresh.h"  3 @interface RootViewController ()
     
        4 {  5     UITableView *_tableView ;  6     NSMutableArray *datas;  7     MJRefreshHeaderView *headerView;  8     MJRefreshFooterView *footerView;  9 } 10 @end 11  12 @implementation RootViewController 13  14 - (void)dealloc 15 { 16     [headerView free]; 17     [footerView free]; 18 } 19  20 - (void)viewDidLoad { 21     [super viewDidLoad]; 22     //初始化tableView 23     [self initializeTableView]; 24     // 初始化数据 25     [self initializeData]; 26 } 27  28 - (void)initializeTableView 29 { 30     _tableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen] bounds] style:UITableViewStylePlain]; 31     _tableView.dataSource = self; 32     [self.view addSubview:_tableView]; 33     // 初始化刷新控件 34     [self initializeRefreshView]; 35 } 36  37  38 - (void)initializeRefreshView 39 { 40     // 下拉刷新 41     headerView = [MJRefreshHeaderView header]; 42     headerView.scrollView = _tableView; 43     headerView.delegate = self; 44      45     // 上拉加载更多 46     footerView = [MJRefreshFooterView footer]; 47     footerView.delegate = self; 48     footerView.scrollView = _tableView; 49 } 50  51 /** 52  *  刷新控件进入开始刷新状态的时候调用 53  */ 54 - (void)refreshViewBeginRefreshing:(MJRefreshBaseView *)refreshView 55 { 56     if ([refreshView isKindOfClass:[MJRefreshHeaderView class]]) { 57         //下拉刷新 58         [self loadNewData]; 59     }else{ 60         [self loadMoreData]; 61     } 62 } 63 /* 64  * 刷新数据 65  */ 66 - (void)loadNewData 67 { 68     static int count = 1; 69     NSMutableArray *array = [NSMutableArray array]; 70     //每次刷新五条数据 71     for (int i = 0; i < 5; i++) { 72         NSString *str = [NSString stringWithFormat:@"第%d次刷新",count]; 73         [array addObject:str]; 74     } 75     // 把新数据加到datas前面 76     NSMutableArray *newArray = [[NSMutableArray alloc] initWithArray:array]; 77     [newArray addObjectsFromArray:datas]; 78     datas = newArray; 79     [_tableView reloadData]; 80     [headerView endRefreshing]; 81     count++; 82 } 83  84 /* 85  * 加载更多数据 86  */ 87 - (void)loadMoreData 88 { 89     static int count = 1; 90     NSMutableArray *array = [NSMutableArray array]; 91     for (int j = 0; j < 5; j++) { 92         NSString *str = [NSString stringWithFormat:@"第%d次加载更多",count]; 93         [array addObject:str]; 94     } 95     [datas addObjectsFromArray:array]; 96     [_tableView reloadData]; 97     [footerView endRefreshing]; 98     count++; 99 }100 101 - (void)initializeData102 {103     datas = [NSMutableArray arrayWithObjects:@"A",@"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", @"N", @"O", @"P", @"Q", @"R", @"S", @"T", @"U", @"V", @"W", @"X", @"Y", @"Z",  nil];104 }105 106 #pragma mark -配置UITableViewDataSource数据107 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section108 {109     return [datas count];110 }111 112 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath113 {114     static NSString *identify = @"cell";115     UITableViewCell *cell = [_tableView dequeueReusableCellWithIdentifier:identify];116     if (!cell) {117         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identify];118         119     }120     cell.textLabel.text = datas[indexPath.row];121     return cell;122 }123 124 @end