如何在登录后更新UITextView

我正在尝试将Facebook与我的iOS应用程序进行整合。要使用FB SDK，我已经为这些文件禁用了带“-fno-objc-arc”的ARC。但是，它仍然有EXC_BAD_ACCESS错误，我需要改变如何在登录后更新UITextView

@property(nonatomic, assign) id<FBSessionDelegate> sessionDelegate;

到

@property(nonatomic, retain) id<FBSessionDelegate> sessionDelegate;

登录现在工作，但

- (void)viewWillAppear:(BOOL)animated 
{ 
    [super viewWillAppear:animated]; 
    AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    if ([defaults objectForKey:@"FBAccessTokenKey"] 
     && [defaults objectForKey:@"FBExpirationDateKey"]) { 
     [delegate facebook].accessToken = [defaults objectForKey:@"FBAccessTokenKey"]; 
     [delegate facebook].expirationDate = [defaults objectForKey:@"FBExpirationDateKey"]; 
     [defaults synchronize]; 
    } 
    if (![[delegate facebook] isSessionValid]) 
    { 
     [[delegate facebook] authorize:nil]; 
    } 
} 
- (void)fbDidLogin 
{ 

    AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    [defaults setObject:[[delegate facebook] accessToken] forKey:@"FBAccessTokenKey"]; 
    [defaults setObject:[[delegate facebook] expirationDate] forKey:@"FBExpirationDateKey"]; 
    [defaults synchronize]; 

    [[delegate facebook] requestWithGraphPath:@"me" andDelegate:self]; 
} 

- (void)request:(FBRequest *)request didLoad:(id)result 
{  
    if ([result isKindOfClass:[NSArray class]]) { 
     result = [result objectAtIndex:0]; 
    } 
    if ([result objectForKey:@"name"]) { 
     self.uitextview.text = [result objectForKey:@"name"]; 
    } 
}

我已签登录后没有更新的UITextView “[result objectForKey：@”name“]”将返回结果，但“self.uitextview”无法识别。

如何成功登录后更新UITextView？

来源

2012-02-24 Foong Kah Loun

哪里是你'self.uilabel'？ – 2012-02-24 05:14:40

抱歉，我的意思是uitextview – 2012-02-25 14:04:54

发现Appdelegate中的ViewController init无法使用，如Facebook Hackbook示例中所示。

替换为以下声明：

UITabBarController *tabBarController = (UITabBarController *) self.window.rootViewController; 
ViewController *viewcontroller = [[tabBarController viewControllers] objectAtIndex:4];

http://www.raywenderlich.com/5138/beginning-storyboards-in-ios-5-part-1

来源

2012-03-01 05:49:20

如何在登录后更新UITextView

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