适用于 iOS 的 Google+ SDK 以编程方式添加登录按钮

Posted 2023-04-14

【中文标题】适用于 iOS 的 Google+ SDK 以编程方式添加登录按钮

【英文标题】：Google+ SDK for iOS Add Signin button programmatically

【发布时间】：2013-09-07 20:10:49

【问题描述】：

至于此处的 G+ 文档：https://developers.google.com/+/mobile/ios/sign-in

可以使用 XIB 或以编程方式在 UIViewController 中添加登录按钮。

我有一个 TableViewController，我将添加 G+ 登录按钮作为表格行的附属视图：

subtitleCell.accessoryView = self.googlePlusSignInButton;

登录按钮的初始化位置如下：

-(void) setGooglePlusButtons 

    self.googlePlusSignInButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain];


    UIImage *backgroundButtonImage = [UIImage imageNamed:@"bt_search_cancel.png"];

    googlePlusSignInButton_.frame = CGRectMake(0.0f,
                                               0.0f,
                                               backgroundButtonImage.size.width,
                                               backgroundButtonImage.size.height);

    googlePlusSignInButton_.titleLabel.textColor = [UIColor whiteColor];
    googlePlusSignInButton_.titleLabel.font = [UIFont boldSystemFontOfSize:11.0f];
    googlePlusSignInButton_.titleLabel.numberOfLines = 2;

    googlePlusSignInButton_.titleLabel.shadowColor = [UIColor darkGrayColor];
    googlePlusSignInButton_.titleLabel.shadowOffset = CGSizeMake(0.0f,
                                                                 -1.0f);

    [googlePlusSignInButton_ setTitle:NSLocalizedString(@"UI_BUTTONS_LOGIN", @"")
                             forState:UIControlStateNormal];

    [googlePlusSignInButton_ setBackgroundImage:backgroundButtonImage
                                       forState:UIControlStateNormal];


    // Make sure the GPPSignInButton class is linked in because references from
    // xib file doesn't count.
    [GPPSignInButton class];

    GPPSignIn *signIn = [GPPSignIn sharedInstance];

    signIn.delegate = self;
    signIn.shouldFetchGoogleUserEmail = signIn.shouldFetchGoogleUserEmail;
    signIn.actions = [NSArray arrayWithObjects:
                      @"http://schemas.google.com/ListenActivity",
                      nil];

按钮在viewDidLoad处设置：

- (void)viewDidLoad 

    [super viewDidLoad];

    [self setGooglePlusButtons];

//...

UIViewControlled 有一个用于登录委托的接口：

@interface MXMSettingsTableViewController () <GPPSignInDelegate>
@end

似乎没有调用委托或共享登录按钮未链接到控制器的实例：

// GPPSignInDelegate

- (void)finishedWithAuth:(GTMOAuth2Authentication *)auth
                   error:(NSError *)error 
   ///....

我认为

// Make sure the GPPSignInButton class is linked in because references from
// xib file doesn't count.
[GPPSignInButton class];

正在链接 ViewController 实例按钮：

// The button that handles Google+ sign-in.
@property (retain, nonatomic) GPPSignInButton *googlePlusSignInButton;

但是我无法弄清楚这个实现中有什么问题。

【参考方案1】：

首先，您应该在googlePlusSignInButton 的操作上调用登录方法

所以代码应该是：

-(void) setGooglePlusButtons 

    self.googlePlusSignInButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain];


    UIImage *backgroundButtonImage = [UIImage imageNamed:@"bt_search_cancel.png"];

    googlePlusSignInButton_.frame = CGRectMake(0.0f,
                                               0.0f,
                                               backgroundButtonImage.size.width,
                                               backgroundButtonImage.size.height);

    googlePlusSignInButton_.titleLabel.textColor = [UIColor whiteColor];
    googlePlusSignInButton_.titleLabel.font = [UIFont boldSystemFontOfSize:11.0f];
    googlePlusSignInButton_.titleLabel.numberOfLines = 2;

    googlePlusSignInButton_.titleLabel.shadowColor = [UIColor darkGrayColor];
    googlePlusSignInButton_.titleLabel.shadowOffset = CGSizeMake(0.0f,
                                                                 -1.0f);

    [googlePlusSignInButton_ setTitle:NSLocalizedString(@"UI_BUTTONS_LOGIN", @"")
                             forState:UIControlStateNormal];

    [googlePlusSignInButton_ setBackgroundImage:backgroundButtonImage
                                       forState:UIControlStateNormal];

    [googlePlusSignInButton addTarget:self action:@selector(signInGoogle:) forControlEvents:UIControlEventTouchUpInside];

而且登录方式应该是这样的：

- (void)signInGoogle 
    GPPSignIn *signIn = [GPPSignIn sharedInstance];
    signIn.delegate = self;
    signIn.shouldFetchGoogleUserEmail = YES;
    signIn.clientID = kClientID;
    signIn.scopes = [NSArray arrayWithObjects:kGTLAuthScopePlusLogin,nil];
    signIn.actions = [NSArray arrayWithObjects:@"http://schemas.google.com/ListenActivity",nil];
    [signIn authenticate];

您的代码缺少[signIn authenticate]; 调用，另外您还需要传入您的clientID，在上面的sn-p 中它是一个常量值（您需要声明）

【讨论】：

当然可以！！！通过这种方式，我还能够将此视图与处理 G+ 帐户和登录的“控制器”对象分开（此处缺少 kClient Id 集成）。非常感谢！

奇怪的东西。 GooglePlus 应用程序打开，但没有进行身份验证，应用程序 openURL:(NSURL *)url sourceApplication: 也被调用。在开发者控制台上正确配置了clientId。

你添加了URL类型吗？这是本指南中的第 4 步：developers.google.com/+/mobile/ios/getting-started

耶！ bundle Id 作为 url 类型，超级奇怪:)。现在它起作用了。非常感谢。

@loretoparisi 如果它回答了您的问题，您应该接受正确的答案

【参考方案2】：

尽管有几种解决方案 没有办法让silentAuthentication 开始工作

- (void)initialize 
    // Read Google+ deep-link data.
    [GPPDeepLink setDelegate:self];
    [GPPDeepLink readDeepLinkAfterInstall];

    // Setup Google+ share dialog.
    [GPPShare sharedInstance].delegate = self;

    // Setup Google+ signin
    [GPPSignIn sharedInstance].clientID = APP_GOOGLEPLUS_APPID;
    [GPPSignIn sharedInstance].delegate = self;

    [GPPSignIn sharedInstance].shouldFetchGoogleUserEmail = YES;
    [GPPSignIn sharedInstance].shouldFetchGoogleUserID = YES;

    [GPPSignIn sharedInstance].actions = [NSArray arrayWithObjects:[self momentSchemaByType:MXMGooglePlusMomentListen], nil];

    [GPPSignIn sharedInstance].scopes = [NSArray arrayWithObjects:kGTLAuthScopePlusLogin, nil]; // defined in GTLPlusConstants.h

    [[GPPSignIn sharedInstance] trySilentAuthentication];

    shareAfterLogin= NO;
    trackIdToShare = nil;

    if([[MXMLogger sharedLogger] isDebug]) 
        NSLog(@"MXMGooglePlusManager initialize login %d keychain %d", [self isGooglePlusLoggedin], [GPPSignIn sharedInstance].hasAuthInKeychain);
    

奇怪的东西， 钥匙串具有身份验证

2013-09-13 13:01:35.849 musiXmatch[1090:790b] MXMGooglePlusManager initialize login 0 keychain 1

但帐户未登录。

至于这里的文档

https://developers.google.com/+/mobile/ios/api/interface_g_p_p_sign_in

实现应该是正确的。