Google云端硬盘iOS SDK:显示取消登录按钮

Question

我正在使用iOS应用程序,我使用谷歌驱动器访问我的文件,登录和列表文件工作正常,但我只是问我如何在登录界面上添加取消按钮由谷歌驱动器sdk提供查看图像怒吼

因为,你看到没有办法做一个cancel或一个go back按钮.

这是我的代码

// verify if the user is already connected or not 
    - (void)checkIfIsConnected
    {
        // Check for authorization.
        GTMOAuth2Authentication *auth =
        [GTMOAuth2ViewControllerTouch authForGoogleFromKeychainForName:kKeychainItemName
                                                              clientID:kClientID
                                                          clientSecret:kClientSecret];
        if ([auth canAuthorize]) {
            [self isAuthorizedWithAuthentication:auth];
        }else
        {
            [self ConnectToDrive];
        }
    }

    - (GTLServiceDrive *)driveService {
        static GTLServiceDrive *service = nil;
        if (!service) {

            service = [[GTLServiceDrive alloc] init];
            // Have the service object set tickets to fetch consecutive pages
            // of the feed so we do not need to manually fetch them.
            service.shouldFetchNextPages = YES;
            // Have the service object set tickets to retry temporary error conditions
            // automatically.
            service.retryEnabled = YES;
        }
        return service;
    }

    -(void) ConnectToDrive{
        SEL finishedSelector = @selector(viewController:finishedWithAuth:error:);
        GTMOAuth2ViewControllerTouch *authViewController =
        [[GTMOAuth2ViewControllerTouch alloc] initWithScope:kGTLAuthScopeDrive
                                                   clientID:kClientID
                                               clientSecret:kClientSecret
                                           keychainItemName:kKeychainItemName
                                                   delegate:self
                                           finishedSelector:finishedSelector];
        [self.fileManagementViewController presentModalViewController:authViewController animated:YES];
    }

    // Action executed after finishing the Authentication
    - (void)viewController:(GTMOAuth2ViewControllerTouch *)viewController
          finishedWithAuth:(GTMOAuth2Authentication *)auth
                     error:(NSError *)error {
        [self.fileManagementViewController dismissModalViewControllerAnimated:YES];
        if (error == nil) {
            [self isAuthorizedWithAuthentication:auth];
        }
    }

    - (void)isAuthorizedWithAuthentication:(GTMOAuth2Authentication *)auth {
        [[self driveService] setAuthorizer:auth];
        self.isAuthorized = YES;
        [self loadDriveFiles];
    }

怎么了？

Answer 1

请按照步骤 -

转到 - > GTLSource->Common->OAuth2->Touch-->GTMOAuth2ViewControllerTouch.m

-(void)viewDidLoad
{
[self setUpNavigation];

[self.navigationController.navigationBar setTitleTextAttributes:@   {NSForegroundColorAttributeName : [UIColor blueColor]}];
self.navigationController.navigationBar.translucent = NO;

UINavigationBar *naviBarObj = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 63)];
[self.view addSubview:naviBarObj];

UIBarButtonItem *cancelItem = [[UIBarButtonItem alloc]initWithTitle:[NSString stringWithFormat:NSLocalizedString(@"Cancel", nil)] style:UIBarButtonItemStyleBordered target:self
                                                             action:@selector(cancelGdriveSignIn:)];    
UINavigationItem *navigItem = [[UINavigationItem alloc] initWithTitle:@"Google Drive"];
navigItem.rightBarButtonItem = cancelItem;
naviBarObj.items = [NSArray arrayWithObjects: navigItem,nil];    
}

 -(void)cancelGdriveSignIn:(id)sender
 {
  [self dismissViewControllerAnimated:YES completion:^(void){}];
 }

-(void)setUpNavigation // Default Method Available 
{
 rightBarButtonItem_.customView = navButtonsView_;
 self.navigationItem.rightBarButtonItem = rightBarButtonItem_;
}

在GTMOAuth2ViewControllerTouch.m中添加上述更改并运行它.你会得到这样的取消按钮 -

快乐的编码...... !!

Answer 2

改变来源 - 糟糕的方式.这是我的解决方案.适用于iPhone和iPad

 GTMOAuth2ViewControllerTouch *authViewController = [GTMOAuth2ViewControllerTouch controllerWithScope:kGTLAuthScopeDrive
                                                                                                clientID:GoogleDriveClientID
                                                                                            clientSecret:GoogleDriveClientSecret
                                                                                        keychainItemName:GoogleDriveKeychainItemName
                                                                                       completionHandler:authCompletionHandler];

    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:authViewController];
    navigationController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [rootController presentViewController:navigationController animated:YES completion:nil];

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Cancel", nil)
                                                                         style:UIBarButtonItemStylePlain
                                                                        target:self
                                                                        action:@selector(didCanceledAuthorization)];
        authViewController.navigationItem.rightBarButtonItem = nil;
        authViewController.navigationItem.leftBarButtonItem = cancelButton;
        authViewController.navigationItem.title = @"Google Drive";
    });