[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

 1 //  HVWHomeViewController.m
 2 /** 获取用户信息 */
 3 - (void) setupUserInfo {
 4     // 设置参数
 5     NSMutableDictionary *param = [NSMutableDictionary dictionary];
 6     // 访问令牌
 7     HVWAccountInfo *accountInfo = [HVWAccountInfoTool accountInfo];
 8     param[@"access_token"] = accountInfo.access_token;
 9     // 用户uid
10     param[@"uid"] = accountInfo.uid;
11
12     // 发送请求
13     [HVWNetworkTool get:@"https://api.weibo.com/2/users/show.json" parameters:param success:^(id responseObject) {
14         // 获取用户信息
15         HVWUser *user = [HVWUser objectWithKeyValues:responseObject];
16         HVWAccountInfo *accountInfo = [HVWAccountInfoTool accountInfo];
17         accountInfo.screen_name = user.screen_name;
18         [HVWAccountInfoTool saveAccountInfo:accountInfo];
19
20         // 设置导航栏标题
21         [self.titleButton setTitle:accountInfo.screen_name forState:UIControlStateNormal];
22     } failure:^(NSError *error) {
23         HVWLog(@"获取用户信息失败!error:%@", error);
24     }];
25 }

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

 1 //  HVWAccountInfoTool.m
 2 /** 从文件获取accountInfo */
 3 + (HVWAccountInfo *) accountInfo {
 4     HVWAccountInfo *accountInfo = [NSKeyedUnarchiver unarchiveObjectWithData:[NSData dataWithContentsOfFile:accountInfoPath]];
 5
 6     // 需要判断是否过期
 7     NSDate *now = [NSDate date];
 8     if ([now compare:accountInfo.expires_time] != NSOrderedAscending) { // now->expires_data 非升序, 已经过期
 9         accountInfo = nil;
10     }
11
12     return accountInfo;
13 }
14
15 /** 存储accountInfo到文件 */
16 + (void) saveAccountInfo:(HVWAccountInfo *) accountInfo {
17     [NSKeyedArchiver archiveRootObject:accountInfo toFile:accountInfoPath];
18 }

 1 //  HVWAccountInfo.m
 2 #pragma mark - NSCoding
 3 /** 从文件解析对象调用 */
 4 - (id)initWithCoder:(NSCoder *)aDecoder {
 5     if (self = [super init]) {
 6         self.access_token = [aDecoder decodeObjectForKey:@"access_token"];
 7         self.expires_in = [aDecoder decodeObjectForKey:@"expires_in"];
 8         self.expires_time = [aDecoder decodeObjectForKey:@"expires_time"];
 9         self.uid = [aDecoder decodeObjectForKey:@"uid"];
10         self.screen_name = [aDecoder decodeObjectForKey:@"screen_name"];
11     }
12
13     return self;
14 }
15
16 /** 把对象写入文件调用 */
17 - (void)encodeWithCoder:(NSCoder *)aCoder {
18     [aCoder encodeObject:self.access_token forKey:@"access_token"];
19     [aCoder encodeObject:self.expires_in forKey:@"expires_in"];
20     [aCoder encodeObject:self.expires_time forKey:@"expires_time"];
21     [aCoder encodeObject:self.uid forKey:@"uid"];
22     [aCoder encodeObject:self.screen_name forKey:@"screen_name"];
23 }

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

 1 //  HVWNavigationBarTitleButton.m
 2 /** 重写setTitle,根据文本改变宽度 */
 3 - (void)setTitle:(NSString *)title forState:(UIControlState)state {
 4     [super setTitle:title forState:state];
 5
 6     NSDictionary *param = @{NSFontAttributeName: self.titleLabel.font};
 7     CGFloat titleWidth = [title boundingRectWithSize:CGSizeMake(MAXFLOAT, self.height) options:NSStringDrawingUsesLineFragmentOrigin attributes:param context:nil].size.width;
 8
 9     self.width = titleWidth + self.height + 10;
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

 1 //  HVWHomeViewController.m
 2 /** 设置导航栏 */
 3 - (void) setupNavigationBar {
 4     // 添加导航控制器按钮
 5     // 左边按钮
 6     self.navigationItem.leftBarButtonItem = [UIBarButtonItem itemWithImage:@"navigationbar_friendsearch" hightlightedImage:@"navigationbar_friendsearch_highlighted" target:self selector:@selector(searchFriend)];
 7
 8     // 右边按钮
 9     self.navigationItem.rightBarButtonItem = [UIBarButtonItem itemWithImage:@"navigationbar_pop" hightlightedImage:@"navigationbar_pop_highlighted" target:self selector:@selector(pop)];
10
11     // 设置标题按钮
12     HVWNavigationBarTitleButton *titleButton = [[HVWNavigationBarTitleButton alloc] init];
13     titleButton.height = 35;
14
15     // 保存到成员属性
16     self.titleButton = titleButton;
17
18     // 设置导航栏标题
19     HVWAccountInfo *accountInfo = [HVWAccountInfoTool accountInfo];
20     NSString *navTitle = @"首页";
21     if (accountInfo.screen_name) {
22         navTitle = accountInfo.screen_name;
23     }
24     [titleButton setTitle:navTitle forState:UIControlStateNormal];
25
26     [titleButton setImage:[UIImage imageWithNamed:@"navigationbar_arrow_down"] forState:UIControlStateNormal];
27     // 设置背景图片
28     [titleButton setBackgroundImage:[UIImage resizedImage:@"navigationbar_filter_background_highlighted"] forState:UIControlStateHighlighted];
29
30     // 监听按钮点击事件，替换图标
31     [titleButton addTarget:self action:@selector(titleButtonClickd:) forControlEvents:UIControlEventTouchUpInside];
32
33     self.navigationItem.titleView = titleButton;
34 }