[iOS微博项目 – 3.4] – 获取用户信息

github: https://github.com/hellovoidworld/HVWWeibo
 A.获取用户信息1.需求获取用户信息并储存把用户昵称显示在“首页”界面导航栏的标题上  2.思路使用微博API将用户信息封装到HVWUser模型中把获取的用户名存放到账户信息HVWAccountInfo模型中存储到沙盒 3.实现

 //  HVWHomeViewController.m
 /** 获取用户信息 */
 - (void) setupUserInfo {
     // 设置参数
     NSMutableDictionary *param = [NSMutableDictionary dictionary];
     // 访问令牌
     HVWAccountInfo *accountInfo = [HVWAccountInfoTool accountInfo];
     param[@"access_token"] = accountInfo.access_token;
     // 用户uid
     param[@"uid"] = accountInfo.uid;     // 发送请求
     [HVWNetworkTool get:@"https://api.weibo.com/2/users/show.json" parameters:param success:^(id responseObject) {
         // 获取用户信息
         HVWUser *user = [HVWUser objectWithKeyValues:responseObject];
         HVWAccountInfo *accountInfo = [HVWAccountInfoTool accountInfo];
         accountInfo.screen_name = user.screen_name;
         [HVWAccountInfoTool saveAccountInfo:accountInfo];         // 设置导航栏标题
         [self.titleButton setTitle:accountInfo.screen_name forState:UIControlStateNormal];
     } failure:^(NSError *error) {
         HVWLog(@"获取用户信息失败!error:%@", error);
     }];
 }

      因为用户数据模型HVWAccountInfo是在HVWAccountInfoTool中使用NSKeyedArchiver和NSKeyedUnarchiver进行文件读写的，所以要设置读写的属性名

 //  HVWAccountInfoTool.m
 /** 从文件获取accountInfo */
 + (HVWAccountInfo *) accountInfo {
     HVWAccountInfo *accountInfo = [NSKeyedUnarchiver unarchiveObjectWithData:[NSData dataWithContentsOfFile:accountInfoPath]];     // 需要判断是否过期
     NSDate *now = [NSDate date];
     if ([now compare:accountInfo.expires_time] != NSOrderedAscending) { // now->expires_data 非升序, 已经过期
         accountInfo = nil;
     }     return accountInfo;
 } /** 存储accountInfo到文件 */
 + (void) saveAccountInfo:(HVWAccountInfo *) accountInfo {
     [NSKeyedArchiver archiveRootObject:accountInfo toFile:accountInfoPath];
 }

 //  HVWAccountInfo.m
 #pragma mark - NSCoding
 /** 从文件解析对象调用 */
 - (id)initWithCoder:(NSCoder *)aDecoder {
     if (self = [super init]) {
         self.access_token = [aDecoder decodeObjectForKey:@"access_token"];
         self.expires_in = [aDecoder decodeObjectForKey:@"expires_in"];
         self.expires_time = [aDecoder decodeObjectForKey:@"expires_time"];
         self.uid = [aDecoder decodeObjectForKey:@"uid"];
         self.screen_name = [aDecoder decodeObjectForKey:@"screen_name"];
     }     return self;
 } /** 把对象写入文件调用 */
 - (void)encodeWithCoder:(NSCoder *)aCoder {
     [aCoder encodeObject:self.access_token forKey:@"access_token"];
     [aCoder encodeObject:self.expires_in forKey:@"expires_in"];
     [aCoder encodeObject:self.expires_time forKey:@"expires_time"];
     [aCoder encodeObject:self.uid forKey:@"uid"];
     [aCoder encodeObject:self.screen_name forKey:@"screen_name"];
 }

 获取了用户昵称，并放在“首页”界面导航栏的标题按钮之后，还有根据文本长度计算按钮宽度，这里直接改写按钮的setTitle方法

 //  HVWNavigationBarTitleButton.m
 /** 重写setTitle,根据文本改变宽度 */
 - (void)setTitle:(NSString *)title forState:(UIControlState)state {
     [super setTitle:title forState:state];     NSDictionary *param = @{NSFontAttributeName: self.titleLabel.font};
     CGFloat titleWidth = [title boundingRectWithSize:CGSizeMake(MAXFLOAT, self.height) options:NSStringDrawingUsesLineFragmentOrigin attributes:param context:nil].size.width;     self.width = titleWidth + self.height + ;
 }

 在“首页”控制器初始化的时候，如果发现沙盒中存储有用户昵称，就设置导航栏标题为用户昵称

 //  HVWHomeViewController.m
 /** 设置导航栏 */
 - (void) setupNavigationBar {
     // 添加导航控制器按钮
     // 左边按钮
     self.navigationItem.leftBarButtonItem = [UIBarButtonItem itemWithImage:@"navigationbar_friendsearch" hightlightedImage:@"navigationbar_friendsearch_highlighted" target:self selector:@selector(searchFriend)];     // 右边按钮
     self.navigationItem.rightBarButtonItem = [UIBarButtonItem itemWithImage:@"navigationbar_pop" hightlightedImage:@"navigationbar_pop_highlighted" target:self selector:@selector(pop)];     // 设置标题按钮
     HVWNavigationBarTitleButton *titleButton = [[HVWNavigationBarTitleButton alloc] init];
     titleButton.height = ;     // 保存到成员属性
     self.titleButton = titleButton;     // 设置导航栏标题
     HVWAccountInfo *accountInfo = [HVWAccountInfoTool accountInfo];
     NSString *navTitle = @"首页";
     if (accountInfo.screen_name) {
         navTitle = accountInfo.screen_name;
     }
     [titleButton setTitle:navTitle forState:UIControlStateNormal];     [titleButton setImage:[UIImage imageWithNamed:@"navigationbar_arrow_down"] forState:UIControlStateNormal];
     // 设置背景图片
     [titleButton setBackgroundImage:[UIImage resizedImage:@"navigationbar_filter_background_highlighted"] forState:UIControlStateHighlighted];     // 监听按钮点击事件，替换图标
     [titleButton addTarget:self action:@selector(titleButtonClickd:) forControlEvents:UIControlEventTouchUpInside];     self.navigationItem.titleView = titleButton;
 }