[iOS微博项目 - 2.4] - 重新安排app启动步骤

github: https://github.com/hellovoidworld/HVWWeibo

A.app启动步骤

1.加入了授权步骤之后，最先要判断app内是否已经登陆了账号

2.在程序启动的时候，先检测是否已有登陆账号

AppDelegate:

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 2     // Override point for customization after application launch.
 3
 4     // 启动后显示状态栏
 5     UIApplication *app = [UIApplication sharedApplication];
 6     app.statusBarHidden = NO;
 7
 8     // 设置window
 9     self.window = [[UIWindow alloc] init];
10     self.window.frame = [UIScreen mainScreen].bounds;
11     [self.window makeKeyAndVisible];
12
13     // 检查是否已有登陆账号
14     NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
15     NSString *filePath = [docPath stringByAppendingPathComponent:@"accountInfo.plist"];
16     NSDictionary *accountInfo = [NSDictionary dictionaryWithContentsOfFile:filePath];
17
18     if (!accountInfo) { // 如果不存在登陆账号，要先进行授权
19         self.window.rootViewController = [[HVWOAuthViewController alloc] init];
20     } else {
21         /** 新版本特性 */
22         // app现在的版本
23         // 由于使用的时Core Foundation的东西，需要桥接
24         NSString *versionKey = (__bridge NSString*) kCFBundleVersionKey;
25         NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
26         NSString *currentVersion = [infoDic objectForKey:versionKey];
27
28         // 上次使用的版本
29         NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
30         NSString *lastVersion = [defaults stringForKey:versionKey];
31
32         // 如果版本变动了，存储新的版本号并启动新版本特性图
33         if (![lastVersion isEqualToString:currentVersion]) {
34
35             // 存储
36             [defaults setObject:currentVersion forKey:versionKey];
37             [defaults synchronize];
38
39             // 开启app显示新特性
40             HVWNewFeatureViewController *newFeatureVC = [[HVWNewFeatureViewController alloc] init];
41             self.window.rootViewController = newFeatureVC;
42         } else {
43             // 创建根控制器
44             HVWTabBarViewController *tabVC = [[HVWTabBarViewController alloc] init];
45             self.window.rootViewController = tabVC;
46         }
47     }
48
49     return YES;
50 }

在授权控制器，授权完毕之后也要继续进入app：

 1 //  HVWOAuthViewController.m
 2 /** 根据access_code获取access_token */
 3 - (void) accessTokenWithAccessCode:(NSString *) accessCode {
 4     // 创建AFN的http操作请求管理者
 5     AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
 6
 7     // 参数设置
 8     NSMutableDictionary *param = [NSMutableDictionary dictionary];
 9     param[@"client_id"] = @"3942775926";
10     param[@"client_secret"] = @"cc577953b2aa3aa8ea220fd15775ea35";
11     param[@"grant_type"] = @"authorization_code";
12     param[@"code"] = accessCode;
13     param[@"redirect_uri"] = @"http://www.cnblogs.com/hellovoidworld/";
14
15     // 发送请求
16     [manager POST:@"https://api.weibo.com/oauth2/access_token" parameters:param success:^(AFHTTPRequestOperation *operation, NSDictionary *accountInfo) {
17         [MBProgressHUD hideHUD];
18
19         // 返回的是用户信息字典
20         // 存储用户信息，包括access_token到沙盒中
21         NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
22         NSString *filePath = [docPath stringByAppendingPathComponent:@"accountInfo.plist"];
23         [accountInfo writeToFile:filePath atomically:YES];
24
25         /** 新版本特性 */
26         // app现在的版本
27         // 由于使用的时Core Foundation的东西，需要桥接
28         NSString *versionKey = (__bridge NSString*) kCFBundleVersionKey;
29         NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
30         NSString *currentVersion = [infoDic objectForKey:versionKey];
31
32         // 上次使用的版本
33         NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
34         NSString *lastVersion = [defaults stringForKey:versionKey];
35
36         UIWindow *window = [UIApplication sharedApplication].keyWindow;
37
38         // 如果版本变动了，存储新的版本号并启动新版本特性图
39         if (![lastVersion isEqualToString:currentVersion]) {
40             // 存储
41             [defaults setObject:currentVersion forKey:versionKey];
42             [defaults synchronize];
43
44             // 开启app显示新特性
45             HVWNewFeatureViewController *newFeatureVC = [[HVWNewFeatureViewController alloc] init];
46             window.rootViewController = newFeatureVC;
47         } else {
48             // 创建根控制器
49             HVWTabBarViewController *tabVC = [[HVWTabBarViewController alloc] init];
50             window.rootViewController = tabVC;
51         }
52
53     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
54         [MBProgressHUD hideHUD];
55         HVWLog(@"请求access_token失败 ----> %@", error);
56     }];
57
58 }

第一次启动：

需要授权+新特性显示