自定义Google登录在GIDSignInDelegate协议上抛出异常

Question

我在obj-c中编写了一个iOS应用程序,并使用Google SignIn SDK来执行Google SignIn流程.我想能够自定义按钮和动作,所以我GIDSignInDelegate根据他们的文档继续实现自己的协议.但它毫无理由地抛出和异常.

这是我的视图控制器的最小代码. viewcontroller.m

    #import "ViewController.h"
    #import <FBSDKLoginKit/FBSDKLoginKit.h>

    @interface ViewController ()


    @property (weak, nonatomic) IBOutlet UIButton *GoogleSignIn;

    @end

    @implementation ViewController

    - (void)viewDidLoad {
        [super viewDidLoad];
        // Do any additional setup after loading the view, typically from a nib.
    }

    - (void)didReceiveMemoryWarning {
        [super didReceiveMemoryWarning];
        // Dispose of any resources that can be recreated.
    }


    - (IBAction)googleButtonTouchUpInside:(id)sender {
        [[GIDSignIn sharedInstance] signIn];
    }

    // Implement these methods only if the GIDSignInUIDelegate is not a subclass of
    // UIViewController.

    // Stop the UIActivityIndicatorView animation that was started when the user
    // pressed the Sign In button
    - (void)signInWillDispatch:(GIDSignIn *)signIn error:(NSError *)error {
        //[UIActivityIndicatorView stopAnimating];
    }

    // Present a view that prompts the user to sign in with Google
    - (void)signIn:(GIDSignIn *)signIn
    presentViewController:(UIViewController *)viewController {
        [self presentViewController:viewController animated:YES completion:nil];
    }

    // Dismiss the "Sign in with Google" view
    - (void)signIn:(GIDSignIn *)signIn
    dismissViewController:(UIViewController *)viewController {
        [self dismissViewControllerAnimated:YES completion:nil];
}

@end

viewcontroller.h

#import <UIKit/UIKit.h>
#import <Google/SignIn.h>

@interface ViewController : UIViewController <GIDSignInUIDelegate>

@end

我确实有自定义登录流程所需的任何委托方法google doc 我错过了什么吗？

Answer 1

这是google signIn的基本工作方式...所以请检查一下你缺少什么

首先在你的按钮动作中使用

GIDSignIn *signin = [GIDSignIn sharedInstance];
signin.shouldFetchBasicProfile = true;
signin.delegate = self;
signin.uiDelegate = self;
[signin signIn];

然后代表

- (void)signIn:(GIDSignIn *)signIn didSignInForUser:(GIDGoogleUser *)user withError:(NSError *)error {
    // Perform any operations on signed in user here.
    if (error == nil) {
        NSString *userId = user.userID;                  
    } else {
        NSLog(@"%@", error.localizedDescription);
    }
}

- (void)signIn:(GIDSignIn *)signIn didDisconnectWithUser:(GIDGoogleUser *)user withError:(NSError *)error {
    // Perform any operations when the user disconnects from app here.
}

- (void)signInWillDispatch:(GIDSignIn *)signIn error:(NSError *)error {
    NSLog(@"%@",error.description);
}

// Present a view that prompts the user to sign in with Google
- (void)signIn:(GIDSignIn *)signIn presentViewController:(UIViewController *)viewController {
    //present view controller
}

// Dismiss the "Sign in with Google" view
- (void)signIn:(GIDSignIn *)signIn dismissViewController:(UIViewController *)viewController {
      //dismiss view controller
 }

Answer 2

针对Swift 3进行了更新:

在signIn按钮操作方法中使用下面的代码行:

GIDSignIn.sharedInstance().uiDelegate = self
GIDSignIn.sharedInstance().delegate = self
GIDSignIn.sharedInstance().signIn()

注意:如果您在ViewController中的任何位置使用它,请在上面的代码行注释...!否则会好的.