[iOS微博项目

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 + 10;
}

 

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 = 35;
   
    // 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;
}