如何在 Cordova/Phonegap 中使用 Google 登录 API [英] How to use Google Login API with Cordova/Phonegap

问题描述

我想在我的 Phonegap 应用中使用使用 Google 登录".我已经阅读了很多文章，但无法找到它是如何完成的.提前致谢.我尝试按照此 URL 将 oAuth2 用于已安装的应用程序".但随后应用程序用户必须手动复制代码并粘贴到我的应用程序中.我正在使用 built.io 联合登录(如果相关).

I want to use "Login with Google" in my Phonegap App. I have read many articles but couldn't find out how it is done. Thanks in Advance. I tried using oAuth2 for "installed Applications" as per this URL. But then the app users have to manually copy code and paste in my app. I am using built.io Federated Login, if its relevant.

推荐答案

将此代码添加到一个 js 文件中并包含在您的项目中.当您想在按钮上访问谷歌登录 api 时，点击调用 function callGoogle() 其余部分将由此代码完成.不要忘记添加您的客户端 ID 和 Client_Secret 密钥.它对我来说工作正常.您需要应用程序浏览器中的cordova 插件.

add this code in one js file and include in your project. when you want to access google login api on button click call function callGoogle() rest will be done by this code. Dont forget to add your client id and Client_Secret keys. Its working fine for me. You need inappbrowser cordova plugin.

var googleapi = {
    authorize: function(options) {
        var deferred = $.Deferred();
         //Build the OAuth consent page URL
        var authUrl = 'https://accounts.google.com/o/oauth2/auth?' + $.param({
            client_id: options.client_id,
            redirect_uri: options.redirect_uri,
            response_type: 'code',
            scope: options.scope
        });

        //Open the OAuth consent page in the InAppBrowser
        var authWindow = window.open(authUrl, '_blank', 'location=no,toolbar=no');

        //The recommendation is to use the redirect_uri "urn:ietf:wg:oauth:2.0:oob"
        //which sets the authorization code in the browser's title. However, we can't
        //access the title of the InAppBrowser.
        //
        //Instead, we pass a bogus redirect_uri of "http://localhost", which means the
        //authorization code will get set in the url. We can access the url in the
        //loadstart and loadstop events. So if we bind the loadstart event, we can
        //find the authorization code and close the InAppBrowser after the user
        //has granted us access to their data.
        $(authWindow).on('loadstart', function(e) {
            var url = e.originalEvent.url;
            var code = /?code=(.+)$/.exec(url);
            var error = /?error=(.+)$/.exec(url);

            if (code || error) {
                //Always close the browser when match is found
                authWindow.close();
            }

            if (code) {
                //Exchange the authorization code for an access token
                $.post('https://accounts.google.com/o/oauth2/token', {
                    code: code[1],
                    client_id: options.client_id,
                    client_secret: options.client_secret,
                    redirect_uri: options.redirect_uri,
                    grant_type: 'authorization_code'
                }).done(function(data) {
                    deferred.resolve(data);

                    $("#loginStatus").html('Name: ' + data.given_name);
                }).fail(function(response) {
                    deferred.reject(response.responseJSON);
                });
            } else if (error) {
                //The user denied access to the app
                deferred.reject({
                    error: error[1]
                });
            }
        });

        return deferred.promise();
    }
};
var accessToken;
var UserData = null;

function callGoogle() {

    //  alert('starting');
    googleapi.authorize({
        client_id: 'client_id',
        client_secret: 'Client_Secret',
        redirect_uri: 'http://localhost',
        scope: 'https://www.googleapis.com/auth/plus.login https://www.googleapis.com/auth/userinfo.email'
    }).done(function(data) {
        accessToken = data.access_token;
        // alert(accessToken);
        // $loginStatus.html('Access Token: ' + data.access_token);
        console.log(data.access_token);
        console.log(JSON.stringify(data));
        getDataProfile();

    });

}

// This function gets data of user.
function getDataProfile() {
    var term = null;
    //  alert("getting user data="+accessToken);
    $.ajax({
        url: 'https://www.googleapis.com/oauth2/v1/userinfo?alt=json&access_token=' + accessToken,
        type: 'GET',
        data: term,
        dataType: 'json',
        error: function(jqXHR, text_status, strError) {},
        success: function(data) {
            var item;

            console.log(JSON.stringify(data));
            // Save the userprofile data in your localStorage.
            localStorage.gmailLogin = "true";
            localStorage.gmailID = data.id;
            localStorage.gmailEmail = data.email;
            localStorage.gmailFirstName = data.given_name;
            localStorage.gmailLastName = data.family_name;
            localStorage.gmailProfilePicture = data.picture;
            localStorage.gmailGender = data.gender;
        }
    });
    disconnectUser();
}

function disconnectUser() {
    var revokeUrl = 'https://accounts.google.com/o/oauth2/revoke?token=' + accessToken;

    // Perform an asynchronous GET request.
    $.ajax({
        type: 'GET',
        url: revokeUrl,
        async: false,
        contentType: "application/json",
        dataType: 'jsonp',
        success: function(nullResponse) {
            // Do something now that user is disconnected
            // The response is always undefined.
            accessToken = null;
            console.log(JSON.stringify(nullResponse));
            console.log("-----signed out..!!----" + accessToken);
        },
        error: function(e) {
            // Handle the error
            // console.log(e);
            // You could point users to manually disconnect if unsuccessful
            // https://plus.google.com/apps
        }
    });
}

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