Question

我正在将twitter集成到我的应用程序中以共享文本。我的twitter集成体系结构是我有两个Button _btnTwitter和_btntwitteLogout，当用户成功登录twitter时，他的名字将显示在_btntwitterLogout作为标题。

当用户点击_btntwitterLogout它注销时，Twitter和注销按钮隐藏，登录按钮就会出现。一切顺利。但是当用户点击登录按钮（_btnTwitter）时，Twitter登录用于登录目的的popup cmes，这是面临的问题，当弹出窗口用户点击该弹出窗口的取消按钮弹出窗口消失时，这里用户的先前用户名在注销按钮中没有改变。我已经设置了用户默认值。

-(IBAction)_clickbtnTwitter:(id)sender
{
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"Twitter_logged"];
       [_btntwitterLogeout setTitle:nil forState:UIControlStateNormal];
        _btntwitterLogeout.hidden = NO;
        _btnTwitter.hidden=YES;
    if (_engine) return;
    _engine = [[SA_OAuthTwitterEngine alloc] initOAuthWithDelegate: self];
    _engine.consumerKey = kOAuthConsumerKey;
    _engine.consumerSecret = kOAuthConsumerSecret;

    UIViewController *controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine: _engine delegate: self];

    if (controller) 
        [self presentModalViewController: controller animated: YES];
    else {
        [_engine sendUpdate: [NSString stringWithFormat: @"Already Updated. %@", [NSDate date]]];

    }
}
}

然后注销代码

-(IBAction)_clickbtntwitterlogeout:(id)sender
{ 

    [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"Twitter_logged"];
    crosstwitterimage.hidden = YES;
     [_btntwitterLogeout setTitle:nil forState:UIControlStateNormal];
   _btntwitterLogeout.hidden = YES;
    _btnTwitter.hidden=NO;
    _btnTwittermain.enabled = NO;
    [_engine clearAccessToken];
    [_engine clearsCookies];
    [_engine setClearsCookies:YES];
    [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"authData"];
    [[NSUserDefaults standardUserDefaults]removeObjectForKey:@"authName"];
    NSLog(@"%@",[[NSUserDefaults standardUserDefaults]valueForKey:@"authName"]);
    NSLog(@"%@",[[NSUserDefaults standardUserDefaults]valueForKey:@"authData"]);
   [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"Twitter_logged"];
    [_engine release];
    _engine=nil;   

    NSHTTPCookie *cookie;
    NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    for (cookie in [storage cookies])
    {
        NSString* domainName = [cookie domain];
        NSRange domainRange = [domainName rangeOfString:@"twitter"];
        if(domainRange.length > 0)
        {
            [storage deleteCookie:cookie];

        }
    }

}

在viewwillappear中

BOOL logged = [[NSUserDefaults standardUserDefaults] boolForKey:@"Twitter_logged"];
;
if (logged == YES) {
    _btnTwitter. hidden = YES;
    _btntwitterLogeout.hidden = NO;
    crosstwitterimage.hidden = NO;
    _btnTwittermain.enabled =YES;
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    //Checks if there is a saved User Name    
    if([defaults objectForKey:@"kTwitterUserName"])
    {
        NSString *username = [defaults objectForKey:@"kTwitterUserName"];
        [_btntwitterLogeout setTitle:username forState:UIControlStateNormal];
        crosstwitterimage.hidden = NO;
    }
}
    else
    {
        _btnTwitter. hidden = NO;
        crosstwitterimage.hidden = YES;
        [_btntwitterLogeout setTitle:nil forState:UIControlStateNormal];
        _btnTwittermain.enabled =NO;
        crosstwitterimage.hidden = YES;

    }

但是当我点击twitter的登录窗口中的取消按钮时，如果用户已经从Twitter发送，则返回带有注销按钮的用户名。在我的代码中有任何问题。提前谢谢。

修改

#pragma mark SA_OAuthTwitterEngineDelegate
- (void) storeCachedTwitterOAuthData: (NSString *) data forUsername: (NSString *) username {
    NSUserDefaults          *defaults = [NSUserDefaults standardUserDefaults];

    [defaults setObject: data forKey: @"authData"];
    [defaults synchronize];
}

- (NSString *) cachedTwitterOAuthDataForUsername: (NSString *) username {
    return [[NSUserDefaults standardUserDefaults] objectForKey: @"authData"];
}

    #pragma mark SA_OAuthTwitterControllerDelegate
    - (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username {
        NSLog(@"Authenicated for %@", username);
        [_btntwitterLogeout setTitle:username forState:UIControlStateNormal];
        NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
        [defaults setObject:username forKey:@"kTwitterUserName"];
        [defaults synchronize];
        }

    - (void) OAuthTwitterControllerFailed: (SA_OAuthTwitterController *) controller {
        NSLog(@"Authentication Failed!");
    }

    - (void) OAuthTwitterControllerCanceled: (SA_OAuthTwitterController *) controller {
        NSLog(@"Authentication Canceled.");
    }


    #pragma mark TwitterEngineDelegate
    - (void) requestSucceeded: (NSString *) requestIdentifier {
        NSLog(@"Request %@ succeeded", requestIdentifier);
    }

    - (void) requestFailed: (NSString *) requestIdentifier withError: (NSError *) error {
        NSLog(@"Request %@ failed with error: %@", requestIdentifier, error);
    }

Answer 1

是的，有问题。每当您点击 _btnTwitter 时，您都将 Twitter_logged 设置为是。那不对。只有在成功登录后才能将其设置为yes。那是用户在Twitter登录窗口中点击取消 NOT 的时候。

换句话说，您需要在用户实际登录后将 Twitter_logged 设置为YES，而不是在用户点击按钮 _btnTwitter

时

似乎 SA_OAuthTwitterController 有一个指向self的委托属性。您应该处理代码以在该委托方法中设置Twitter_logged YES。

希望有所帮助。

编辑：

鉴于此处的最新代码，您应该添加NsUserDefaults数据

  - (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username {
    NSLog(@"Authenicated for %@", username);
    [_btntwitterLogeout setTitle:username forState:UIControlStateNormal];
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:username forKey:@"kTwitterUserName"];
    [defaults setBool:YES forKey:@"Twitter_logged"]; // Right here - mbh
    [defaults synchronize];
    }

NSUser默认在iphone SDK中存在疑问

1 个答案: