Google Drive iOS SDK：显示取消登录按钮 [英] Google Drive iOS SDK: Display Cancel Login Button

问题描述

我正在开发iOS应用程序，我使用Google驱动器来访问我的文件，登录和列表文件工作正常，但我只是问如何在Google驱动器sdk提供的登录界面上添加取消按钮看到图像波纹管

由于您看不到取消或返回按钮。

这是我的代码

  //验证用户是否已连接
  - （void）checkIfIsConnected 
 {
 //检查授权。 
 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]; 
 //让服务对象设置票据以获取Feed的连续页面
 //，因此我们不需要手动获取它们。 
 service.shouldFetchNextPages = YES; 
 //让服务对象设置票据以自动重试临时错误条件
 //。 
 service.retryEnabled = YES; 
} 
退货服务; 
} 
 
  - （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]; 
} 
 
 //完成认证后执行的动作
  - （void）viewController：（GTMOAuth2ViewControllerTouch *）viewController 
 finishedWithAuth：（GTMOAuth2Authentication *）auth 
错误：（NSError *）错误{
 [self.fileManagementViewController dismissModalViewControllerAnimated：YES]; 
 if（error == nil）{
 [self isAuthorizedWithAuthentication：auth]; 
 
 
 $ b  - （void）isAuthorizedWithAuthentication：（GTMOAuth2Authentication *）auth {
 [[self driveService] setAuthorizer：auth]; 
 self.isAuthorized = YES; 
 [self loadDriveFiles]; 
} 
  

所以错了什么？

解决方案

请按照以下步骤操作 -

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]; 
 
 $ b  - （void）cancelGdriveSignIn：（id）sender 
 {
 [self dismissViewControllerAnimated：YES completion：^（void）{}]; 
 
 
  - （void）setUpNavigation //可用的缺省方法
 {
 rightBarButtonItem_.customView = navButtonsView_; 
 self.navigationItem.rightBarButtonItem = rightBarButtonItem_; 
} 
  

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

<快乐编码...... !!

I'm working on a iOS Application and i use Google drive to access my files , login and listing file works fine , but I'm just asking how i can add a cancel button on the Login interface provided by Google drive sdk see the Image bellow

As,you see there are no way to do a cancel or a go back button.

Here Is my code

// 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];
    }

so what wrong ??

解决方案

Please follow the steps -

Go to--> 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_;
}

Once you add the above changes in the GTMOAuth2ViewControllerTouch.m and run it. you will get cancel button like this-

Happy Coding......!!

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