iOS-新浪微博开发-26-下拉刷新

在这里使用的是苹果系统原生的下拉刷新控件

用起来很简单 上代码 和大家一起分享

但是苹果没有为我们提供上拉刷新的控件

#import "QHHomeViewController.h"#import "QHDropdownMenu.h"#import "QHTitleMenuTableViewController.h"#import "AFNetworking.h"#import "QHAccountTool.h"#import "QHTitleButton.h"#import "UIImageView+WebCache.h"#import "QHUser.h"#import "QHStatus.h"#import "MJExtension.h"//https://api.weibo.com/2/users/show.json@interface QHHomeViewController ()<QHDropdownMenuDelegate>/** *  微博数组（里面放的都是字典 每个字典代表一条微博）    改为：微博数组(里面放的都是QHStatus 模型) 一个QHStatus 模型对应一条微博  */@property(nonatomic,strong)NSMutableArray *statues;@end@implementation QHHomeViewController- (NSMutableArray *)statues{    if (!_statues) {        self.statues = [NSMutableArray array];    }    return _statues;}- (void)viewDidLoad {    [super viewDidLoad];        //设置导航栏    [self setupNav];        //获取用户信息（昵称）    [self setupUserInfo];    //    //加载最新的微博数据//    [self loadNewStatus];        //集成刷新控件    [self setupRefresh];    }/** *  集成刷新控件 * *  @return */#warning 对于没有使用过的方法要学会猜- (void)setupRefresh{    UIRefreshControl *control = [[UIRefreshControl alloc]init];    [self.tableView addSubview:control];    [control addTarget:self action:@selector(refreshStateChange:) forControlEvents:UIControlEventValueChanged];}/** *  UIRefreshControl 进入刷新状态：加载最新数据 *///since_id false int64 若指定此参数，则返回ID比since_id大的微博（即比since_id时间晚的微博），默认为0。- (void)refreshStateChange:(UIRefreshControl *)control{    QHLog(@"refreshStateChange");    //1.请求管理者    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];    //2.拼接参数    NSMutableDictionary *params = [NSMutableDictionary dictionary];    QHAccount *account = [QHAccountTool account];    params[@"access_token"] = account.access_token;        //取出最前面的微博（最新的微博 ID最大的微博）    QHStatus *firstStatus = [self.statues firstObject];#warning 如果这里手动刷新 需要判断第一条微博数据是否为空        if(firstStatus)    {        //若指定次参数 则返回ID 比since_id 大的微博（即比since_id 时间晚的微博）默认为0                params[@"since_id"] =firstStatus.idstr;    }           //3.发送请求    [mgr GET:@"https://api.weibo.com/2/statuses/friends_timeline.json" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {        // 将微博字典转化成 微博模型的数组        NSArray *newStatuses = [QHStatus objectArrayWithKeyValuesArray:responseObject[@"statuses"]];                //将最新的微博数据 添加到总数组的最前面        NSRange range = NSMakeRange(0, newStatuses.count);        NSIndexSet *set = [NSIndexSet indexSetWithIndexesInRange:range];        [self.statues insertObjects:newStatuses atIndexes:set];                //刷新表格        [self.tableView reloadData];        [control endRefreshing];                    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {        QHLog(@"请求失败 -- %@",error);        [control endRefreshing];    }];    }/** *  加载最新的微博数据 */- (void)loadNewStatus{    //https://api.weibo.com/2/statuses/friends_timeline.json    //1.请求管理者    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];    //2.拼接参数    NSMutableDictionary *params = [NSMutableDictionary dictionary];    QHAccount *account = [QHAccountTool account];    params[@"access_token"] = account.access_token;//    params[@"count"] = @10;    //我们想获取哪些信息直接传参数就可以了    //3.发送请求    [mgr GET:@"https://api.weibo.com/2/statuses/friends_timeline.json" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {//        QHLog(@"请求成功%@",responseObject);        //取得"微博 字典"数组//        NSArray *dictArray = responseObject[@"statuses"];                //将 “微博字典”数组 转为 “微博模型”数组//        for(NSDictionary *dict in dictArray)//        {//            QHStatus *status = [QHStatus objectWithKeyValues:dict];//            [self.statues addObject:status];//        }                //将 “微博字典”数组 转为 “微博模型”数组        NSArray *newStatuses = [QHStatus objectArrayWithKeyValuesArray:responseObject[@"statuses"]];                //将最新的微博数据 添加到总数组后面        //self.statues = @[]        //newStatuses = @[status01,status02]        [self.statues addObjectsFromArray:newStatuses];        //self.statuses == @[status01,status02];                //下面做法是错误的！！！//        [self.statues addObject:newStatuses];        //self.statues == @[@[status01,ststus02]];                //刷新表格        [self.tableView reloadData];    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {        QHLog(@"请求失败-%@",error);    }];}/** *  获得用户信息（昵称） */- (void)setupUserInfo{    //https://api.weibo.com/2/users/show.json    //access_token false string 采用OAuth授权方式为必填参数，其他授权方式不需要此参数，OAuth授权后获得。    //uid false int64 需要查询的用户ID。    //1.请求管理者    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];        //2.拼接请求参数    QHAccount *account = [QHAccountTool account];    NSMutableDictionary *params = [NSMutableDictionary dictionary];    params[@"access_token"] = account.access_token;    params[@"uid"] =account.uid;         //3.发送请求    [mgr GET:@"https://api.weibo.com/2/users/show.json" parameters:params success:^(AFHTTPRequestOperation *operation, NSDictionary * responseObject) {        QHLog(@"请求成功%@",responseObject);        //标题按钮        UIButton *titleButton = (UIButton *)self.navigationItem.titleView;        //设置名字//        NSString *name = responseObject[@"name"];        QHUser *user = [QHUser objectWithKeyValues:responseObject];                        [titleButton setTitle:user.name forState:UIControlStateNormal];//        [titleButton sizeToFit];        //存储昵称到沙盒中        account.name = user.name;        [QHAccountTool saveAccount:account];            } failure:^(AFHTTPRequestOperation *operation, NSError *error) {        QHLog(@"请求失败-- %@",error);    }];}/** *  设置导航栏 */- (void)setupNav{    //这时self.view.window 值为空    NSLog(@"%@",self.view.window);    /*设置导航栏上面的内容*/        //注意这一调用的是控制器的方法 Tool 里面没有方法 知识调用action 的方法    self.navigationItem.leftBarButtonItem =[UIBarButtonItem itemWithTarget:self Action:@selector(friendSearch) image:@"navigationbar_friendsearch" highImage:@"navigationbar_friendsearch_highlighted"];    self.navigationItem.rightBarButtonItem = [UIBarButtonItem itemWithTarget:self Action:@selector(pop) image:@"navigationbar_pop" highImage:@"navigationbar_pop_highlighted"];    QHLog(@"QHHomeViewController");        /*中间的标题按钮*/    QHTitleButton *titleButton = [[QHTitleButton alloc]init];//    titleButton.width = 150;//    titleButton.height = 30;    //titleButton.backgroundColor = QHRandomColor;        //设置图片和文字    NSString * name = [QHAccountTool account].name;        [titleButton setTitle:name?name:@"首页" forState:UIControlStateNormal];        //    titleButton.imageEdgeInsets = UIEdgeInsetsMake(0, 90, 0, 0);//    titleButton.titleEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 40);    self.navigationItem.titleView = titleButton;    //按钮的自适应 内部的内容有多大 按钮就不用设置 代替了实质宽高//    [titleButton sizeToFit];    //如果图片的某个方向上不规则 比如突起 那么这个方向就不能拉伸        //监听标题的点击    [titleButton addTarget:self action:@selector(titleClick:) forControlEvents:UIControlEventTouchUpInside];    /**     * 解决方案 转换坐标系     *     *     */    }/** *  标题点击 */-(void)titleClick:(UIButton *)titleButton{    //1.创建下拉菜单    QHDropdownMenu *menu = [QHDropdownMenu menu];    menu.delegate = self;    //2.设置内容    //menu.content = [UIButton buttonWithType:UIButtonTypeContactAdd];    //menu.content = [[UITableView alloc]initWithFrame:CGRectMake(0,0 , 100, 100) style:UITableViewStylePlain];        QHTitleMenuTableViewController *vc = [[QHTitleMenuTableViewController alloc]init];    vc.view.height = 44*3;    vc.view.width = 150;#warning mark  在里面保存了全局变量 所以不会被销毁     menu.contentController = vc;    //3.显示    [menu showFrom:titleButton];        //4.让箭头向上       // [menu dismiss]; }#pragma mark - 代理方法QHDropdownMenuDelegate/** *  下拉菜单被销毁了 向下 * *  @param menu <#menu description#> */- (void)dropdownMenueDidDismiss:(QHDropdownMenu *)menu{    UIButton *titleButton = (UIButton *)self.navigationItem.titleView;    titleButton.selected = NO;    // [titleButton setImage:[UIImage imageNamed:@"navigationbar_arrow_down"] forState:UIControlStateNormal];}/** *  下拉菜单显示了 向上 * *  @param menu <#menu description#> */- (void)dropdownMenueDidShow:(QHDropdownMenu *)menu{    UIButton *titleButton = (UIButton *)self.navigationItem.titleView;    titleButton.selected = YES;    //[titleButton setImage:[UIImage imageNamed:@"navigationbar_arrow_up"] forState:UIControlStateNormal];}-(void)friendSearch{    NSLog(@"friendsearch");}-(void)pop{    NSLog(@"pop");}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}#pragma mark - Table view data source- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return self.statues.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {        static NSString *ID = @"status";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];    if (cell == nil) {        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:ID];    }    //取出这行对应微博字典//    NSDictionary *status = self.statues[indexPath.row];    QHStatus *status = self.statues[indexPath.row];        //取出这条微博的作者（用户）//    NSDictionary *user = status[@"user"];//    cell.textLabel.text = user[@"name"];    QHUser *user = status.user;    cell.textLabel.text = user.name;        //设置微博文字//    cell.detailTextLabel.text = status[@"text"];    cell.detailTextLabel.text = status.text;    //设置头像//    NSString *imageUrl = user[@"profile_image_url"];    NSString  *imageUrl = user.profile_image_url;    UIImage *placehoder = [UIImage imageNamed:@"avatar_default_small"];    [cell.imageView sd_setImageWithURL:[NSURL URLWithString:imageUrl] placeholderImage:placehoder];    //QHLog(@"%@",user);        return cell;}/** *  我们所要处理的问题    1.将字典转为模型    2.能够下拉刷新最新的微博数据    3.能够上拉加载更多的微博数据  */@end