Google +在应用程序中注册

Question

我想将Google+登录功能集成到我的应用程序中。我使用过Google+ sdk，但它重定向到safari登录到google，我想在我的应用程序中打开这个网页对话框。有人能帮我做那件事吗？

Answer 1

我做到了。继承UIApplication类，然后在web视图中处理url。这是代码：

将Google+ FrameWork添加到项目中。

现在，在身份验证调用中，通过继承UIAPPLICATION类来捕获该URL。

- (IBAction)btnGooglePlusTap:(id)sender
{
   [[GPPSignIn sharedInstance] authenticate];
}

SubClassUIApplication.h 

#import <UIKit/UIKit.h>

#define ApplicationOpenGoogleAuthNotification @"GoogleFriendInvitationPosted"

@interface SubClassUIApplication : UIApplication

@end


#import "SubClassUIApplication.h"

@implementation SubClassUIApplication

- (BOOL)openURL:(NSURL *)url
{
    if([[url absoluteString] hasPrefix:@"googlechrome-x-callback:"])
    {
        return NO;//This will prevent call to Google Chrome App if installed.
    }
    else if([[url absoluteString] hasPrefix:@"https://accounts.google.com/o/oauth2/auth"])
    {
        [[NSNotificationCenter defaultCenter] postNotificationName:ApplicationOpenGoogleAuthNotification object:url];

        return NO;// Here we will pass URL to notification and from notification observer , we will load web view.
    }
    else if ([[url absoluteString] hasPrefix:@"com.google"])
    {
        return NO;
    }

    return [super openURL:url];
}

@end

将此子类设置为info.plist文件中的主体类。

现在打开到web视图的URL

- (void)catchNotificationforGooglePlusSharing:(NSNotification *)notiofication
{
    NSURL *u=(NSURL *)notiofication.object;

    UINavigationController *navWebView =(UINavigationController *) [self.storyboard instantiateViewControllerWithIdentifier:@"WebViewNavController"];

    WebViewController *vcWebView = navWebView.viewControllers[0];
    vcWebView.webURL = u;
    [self.navigationController presentViewController:navWebView animated:YES completion:Nil];
}

现在在webviewcontroller.m .m中。

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSURLRequest *req= [[NSURLRequest alloc]initWithURL:webURL];

    [webvGoogle loadRequest:req];
}
#pragma mark - UIWebViewDelegate method
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    BOOL canHandle = [GPPURLHandler handleURL:request.URL sourceApplication:@"com.apple.mobilesafari" annotation:nil];

    if(canHandle == YES)
    {


        [self dismissViewControllerAnimated:YES completion:^
        {

        }];
    }

    return YES;
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
    NSLog(@"Error in loading : %@",error.description);
}

不要忘记为ApplicationOpenGoogleAuthNotification通知注册类。

Answer 2

您可以使用来自Google Mac - OAuth 2控制器工具箱的Google Mac - OAuth 2控制器工具箱。

#import <GTMOAuth2ViewControllerTouch.h>

GTMOAuth2ViewControllerTouch *googleAuthViewController = [[GTMOAuth2ViewControllerTouch alloc]
                       initWithScope:@"https://www.googleapis.com/auth/userinfo#email"
                       clientID:kClientId
                       clientSecret:kSecretId
                       keychainItemName:@"GooglePlus_Sample_App"
                       delegate:self
                       finishedSelector:@selector(viewController:finishedWithAuth:error:)];

[self.navigationController pushViewController:googleAuthViewController animated:YES];

这是一个在http://blog.krzyzanowskim.com/2015/02/22/google-sign-on-with-1password/中找到的示例，您可以在这里找到完整的示例项目。