Google account Integration in Android – Login with Gmail

Manish SrivastavaOctober 1st, 2013Last Updated: October 1st, 2013

27 394 6 minutes read

Hello Friends,

This is my post for Google account integration with your application, login with gmail, signup with Google account. Some important step is given below-

Step 1- Create new project say GoogleProfileDemo.
Step 2- Add “Google play service” libray project.
Step 3 – Add needed permission in manifest.xml-

<uses-permission android:name="android.permission.INTERNET" />
 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
 
<uses-permission android:name="android.permission.NETWORK" />
 
<uses-permission android:name="android.permission.USE_CREDENTIALS" />

1)SplashActivity.java

package com.manish.google.profile;
 
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
 
import com.google.android.gms.auth.GoogleAuthUtil;
 
/**
 * @author manish
 * 
 */
public class SplashActivity extends Activity {
    Context mContext = SplashActivity.this;
    AccountManager mAccountManager;
    String token;
    int serverCode;
    private static final String SCOPE = "oauth2:https://www.googleapis.com/auth/userinfo.profile";
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Splash screen view
        setContentView(R.layout.activity_splash);
            syncGoogleAccount();
 
    }
 
    private String[] getAccountNames() {
        mAccountManager = AccountManager.get(this);
        Account[] accounts = mAccountManager
                .getAccountsByType(GoogleAuthUtil.GOOGLE_ACCOUNT_TYPE);
        String[] names = new String[accounts.length];
        for (int i = 0; i < names.length; i++) {
            names[i] = accounts[i].name;
        }
        return names;
    }
 
    private AbstractGetNameTask getTask(SplashActivity activity, String email,
            String scope) {
        return new GetNameInForeground(activity, email, scope);
 
    }
 
    public void syncGoogleAccount() {
        if (isNetworkAvailable() == true) {
            String[] accountarrs = getAccountNames();
            if (accountarrs.length > 0) {
                //you can set here account for login
                getTask(SplashActivity.this, accountarrs[0], SCOPE).execute();
            } else {
                Toast.makeText(SplashActivity.this, "No Google Account Sync!",
                        Toast.LENGTH_SHORT).show();
            }
        } else {
            Toast.makeText(SplashActivity.this, "No Network Service!",
                    Toast.LENGTH_SHORT).show();
        }
    }
    public boolean isNetworkAvailable() {
 
        ConnectivityManager cm = (ConnectivityManager) mContext
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = cm.getActiveNetworkInfo();
        if (networkInfo != null && networkInfo.isConnected()) {
            Log.e("Network Testing", "***Available***");
            return true;
        }
        Log.e("Network Testing", "***Not Available***");
        return false;
    }
}

2)HomeActivity.java

package com.manish.google.profile;
 
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
 
import org.json.JSONException;
import org.json.JSONObject;
 
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
 
/**
 * @author manish
 * 
 */
public class HomeActivity extends Activity {
    ImageView imageProfile;
    TextView textViewName, textViewEmail, textViewGender, textViewBirthday;
    String textName, textEmail, textGender, textBirthday, userImageUrl;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);
        imageProfile = (ImageView) findViewById(R.id.imageView1);
        textViewName = (TextView) findViewById(R.id.textViewNameValue);
        textViewEmail = (TextView) findViewById(R.id.textViewEmailValue);
        textViewGender = (TextView) findViewById(R.id.textViewGenderValue);
        textViewBirthday = (TextView) findViewById(R.id.textViewBirthdayValue);
 
        /**
         * get user email using intent
         */
 
        Intent intent = getIntent();
        textEmail = intent.getStringExtra("email_id");
        System.out.println(textEmail);
        textViewEmail.setText(textEmail);
 
        /**
         * get user data from google account
         */
 
        try {
            System.out.println("On Home Page***"
                    + AbstractGetNameTask.GOOGLE_USER_DATA);
            JSONObject profileData = new JSONObject(
                    AbstractGetNameTask.GOOGLE_USER_DATA);
 
            if (profileData.has("picture")) {
                userImageUrl = profileData.getString("picture");
                new GetImageFromUrl().execute(userImageUrl);
            }
            if (profileData.has("name")) {
                textName = profileData.getString("name");
                textViewName.setText(textName);
            }
            if (profileData.has("gender")) {
                textGender = profileData.getString("gender");
                textViewGender.setText(textGender);
            }
            if (profileData.has("birthday")) {
                textBirthday = profileData.getString("birthday");
                textViewBirthday.setText(textBirthday);
            }
 
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
 
    public class GetImageFromUrl extends AsyncTask<String, Void, Bitmap> {
        @Override
        protected Bitmap doInBackground(String... urls) {
            Bitmap map = null;
            for (String url : urls) {
                map = downloadImage(url);
            }
            return map;
        }
 
        // Sets the Bitmap returned by doInBackground
        @Override
        protected void onPostExecute(Bitmap result) {
            imageProfile.setImageBitmap(result);
        }
 
        // Creates Bitmap from InputStream and returns it
        private Bitmap downloadImage(String url) {
            Bitmap bitmap = null;
            InputStream stream = null;
            BitmapFactory.Options bmOptions = new BitmapFactory.Options();
            bmOptions.inSampleSize = 1;
 
            try {
                stream = getHttpConnection(url);
                bitmap = BitmapFactory.decodeStream(stream, null, bmOptions);
                stream.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
            return bitmap;
        }
 
        // Makes HttpURLConnection and returns InputStream
        private InputStream getHttpConnection(String urlString)
                throws IOException {
            InputStream stream = null;
            URL url = new URL(urlString);
            URLConnection connection = url.openConnection();
 
            try {
                HttpURLConnection httpConnection = (HttpURLConnection) connection;
                httpConnection.setRequestMethod("GET");
                httpConnection.connect();
 
                if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
                    stream = httpConnection.getInputStream();
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            return stream;
        }
    }
}

3)AbstractGetNameTask.java

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/**
 * Copyright 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package com.manish.google.profile;
 
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
 
import org.json.JSONException;
 
import com.google.android.gms.auth.GoogleAuthUtil;
 
import android.content.Intent;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast;
 
/**
 * Display personalized greeting. This class contains boilerplate code to
 * consume the token but isn't integral to getting the tokens.
 */
public abstract class AbstractGetNameTask extends AsyncTask<Void, Void, Void> {
    private static final String TAG = "TokenInfoTask";
    protected SplashActivity mActivity;
   public static String GOOGLE_USER_DATA="No_data";
    protected String mScope;
    protected String mEmail;
    protected int mRequestCode;
 
    AbstractGetNameTask(SplashActivity activity, String email, String scope) {
        this.mActivity = activity;
        this.mScope = scope;
        this.mEmail = email;
    }
 
    @Override
    protected Void doInBackground(Void... params) {
        try {
            fetchNameFromProfileServer();
 
        } catch (IOException ex) {
            onError("Following Error occured, please try again. "
                    + ex.getMessage(), ex);
        } catch (JSONException e) {
            onError("Bad response: " + e.getMessage(), e);
        }
        return null;
    }
 
    protected void onError(String msg, Exception e) {
        if (e != null) {
            Log.e(TAG, "Exception: ", e);
        }
    }
 
    /**
     * Get a authentication token if one is not available. If the error is not
     * recoverable then it displays the error message on parent activity.
     */
    protected abstract String fetchToken() throws IOException;
 
    /**
     * Contacts the user info server to get the profile of the user and extracts
     * the first name of the user from the profile. In order to authenticate
     * with the user info server the method first fetches an access token from
     * Google Play services.
     * @return 
     * @return 
     * 
     * @throws IOException
     *             if communication with user info server failed.
     * @throws JSONException
     *             if the response from the server could not be parsed.
     */
    private void fetchNameFromProfileServer() throws IOException, JSONException {
        String token = fetchToken();
        URL url = new URL("https://www.googleapis.com/oauth2/v1/userinfo?access_token="+ token);
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        int sc = con.getResponseCode();
        if (sc == 200) {
            InputStream is = con.getInputStream();
            GOOGLE_USER_DATA = readResponse(is);
            is.close();
 
            Intent intent=new Intent(mActivity,HomeActivity.class);
            intent.putExtra("email_id", mEmail);
            mActivity.startActivity(intent);
            mActivity.finish();
            return;
        } else if (sc == 401) {
            GoogleAuthUtil.invalidateToken(mActivity, token);
            onError("Server auth error, please try again.", null);
            //Toast.makeText(mActivity, "Please try again", Toast.LENGTH_SHORT).show();
            //mActivity.finish();
            return;
        } else {
            onError("Server returned the following error code: " + sc, null);
            return;
        }
    }
 
    /**
     * Reads the response from the input stream and returns it as a string.
     */
    private static String readResponse(InputStream is) throws IOException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        byte[] data = new byte[2048];
        int len = 0;
        while ((len = is.read(data, 0, data.length)) >= 0) {
            bos.write(data, 0, len);
        }
        return new String(bos.toByteArray(), "UTF-8");
    }
 
}

4)GetNameInForeground.java

/**
 * Copyright 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package com.manish.google.profile;
 
import java.io.IOException;
 
import com.google.android.gms.auth.GoogleAuthException;
import com.google.android.gms.auth.GoogleAuthUtil;
import com.google.android.gms.auth.GooglePlayServicesAvailabilityException;
import com.google.android.gms.auth.UserRecoverableAuthException;
 
/**
 * This example shows how to fetch tokens if you are creating a foreground task/activity and handle
 * auth exceptions.
 */
public class GetNameInForeground extends AbstractGetNameTask {
 
  public GetNameInForeground(SplashActivity activity, String email, String scope) {
      super(activity, email, scope);
  }
 
  /**
   * Get a authentication token if one is not available. If the error is not recoverable then
   * it displays the error message on parent activity right away.
   */
  @Override
  protected String fetchToken() throws IOException {
      try {
          return GoogleAuthUtil.getToken(mActivity, mEmail, mScope);
      } catch (GooglePlayServicesAvailabilityException playEx) {
          // GooglePlayServices.apk is either old, disabled, or not present.
      } catch (UserRecoverableAuthException userRecoverableException) {
          // Unable to authenticate, but the user can fix this.
          // Forward the user to the appropriate activity.
          mActivity.startActivityForResult(userRecoverableException.getIntent(), mRequestCode);
      } catch (GoogleAuthException fatalException) {
          onError("Unrecoverable error " + fatalException.getMessage(), fatalException);
      }
      return null;
  }
}

5)activity_splash.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SplashActivity" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Please wait..."
        android:textSize="25sp" />
 
    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true" />
 
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="10dp"
        android:text="By:Manish Srivastava" />
 
</RelativeLayout>

6)activity_home.xml

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="7dp" >
 
    <TextView
        android:id="@+id/textViewTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="Home Page"
        android:textSize="24sp" />
 
    <TextView
        android:id="@+id/textViewNameLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textViewTitle"
        android:layout_marginTop="15dp"
        android:text="Name:"
        android:textSize="18sp" />
 
    <TextView
        android:id="@+id/textViewNameValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textViewTitle"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="15dp"
        android:layout_toRightOf="@id/textViewNameLabel"
        android:text="Name:"
        android:textSize="18sp" />
 
      <TextView
        android:id="@+id/textViewEmailLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@id/textViewNameLabel"
        android:layout_marginTop="15dp"
        android:text="Email:"
        android:textSize="18sp" />
 
    <TextView
        android:id="@+id/textViewEmailValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/textViewNameValue"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="15dp"
        android:layout_toRightOf="@id/textViewEmailLabel"
        android:text="Email:"
        android:textSize="18sp" />
 
     <TextView
        android:id="@+id/textViewGenderLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@id/textViewEmailLabel"
        android:layout_marginTop="15dp"
        android:text="Gender:"
        android:textSize="18sp" />
 
    <TextView
        android:id="@+id/textViewGenderValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textViewGenderLabel"
        android:layout_alignLeft="@+id/textViewNameValue"
        android:text="Gender:"
        android:textSize="18sp" />
 
     <TextView
        android:id="@+id/textViewBirthdayLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@id/textViewGenderLabel"
        android:layout_marginTop="15dp"
        android:text="Birthday:"
        android:textSize="18sp" />
 
    <TextView
        android:id="@+id/textViewBirthdayValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textViewBirthdayLabel"
        android:layout_alignBottom="@+id/textViewBirthdayLabel"
        android:layout_toRightOf="@+id/textViewBirthdayLabel"
        android:text="Birthday:"
        android:textSize="18sp" />
 
    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_toRightOf="@+id/textViewTitle"/>
 
</RelativeLayout>

7)AndroidManifest.xml

<manifest android:versioncode="1" android:versionname="1.0" package="com.manish.google.profile" xmlns:android="http://schemas.android.com/apk/res/android">
 
    <uses-sdk android:minsdkversion="8" android:targetsdkversion="16">
 
    <uses-permission android:name="android.permission.INTERNET">
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE">
    <uses-permission android:name="android.permission.GET_ACCOUNTS">
    <uses-permission android:name="android.permission.NETWORK">
    <uses-permission android:name="android.permission.USE_CREDENTIALS">
 
    <application android:allowbackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme">
        <activity android:label="@string/app_name" android:name="com.manish.google.profile.SplashActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN">
 
                <category android:name="android.intent.category.LAUNCHER">
            </category></action></intent-filter>
        </activity>
        <activity android:name="com.manish.google.profile.HomeActivity">
    </activity></application>
 
</uses-permission></uses-permission></uses-permission></uses-permission></uses-permission></uses-sdk></manifest>

Download Zip Code

Reference: Google account Integration in Android – Login with Gmail from our JCG partner Manish Srivastava at the Android Hub 4 you blog.

Manish SrivastavaOctober 1st, 2013Last Updated: October 1st, 2013

27 394 6 minutes read

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27 Comments

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Vidhyadhari

11 years ago

Hai,

I am Developing an application, I need to Login through Gmail and want to get the all contacts details along there Address.. Can plz help me , With some Sample or Code fully to me plz .. I new in this working

Irfan Irfan

6 years ago

Reply to Vidhyadhari

hi vidhyadhari i need your help in this as im also developing the same application as you if you don’t mind would like to send me the code as you have… please help me…

MAniraj.A

Tank you

steve

i wish your tutorials were helpful, but unfortunately, they are no where close. How is this crap allowed on such a wonderful site. There are NO instructions, no guidance, the author never explains even slightly what they are doing (I imagine because this author copy and pastes these tutorials from other websites but doesn’t speak English). This is crap, if I wanted to just copy and paste code I could do that from any number of open srouce projects that are much better coded, commented and feature rich than this SHIT!

Pesarkhaleh

10 years ago

Nice, I was searching many sites. it is the best ! just what I needed.

Nelson Glauber

Thank you man! It works great!

r384r5,
nglauber

Barun Kumar

Here,Meta-data is not added in the menifest file.It is important to add.

bheeman

thank you !

nithin

App crashes for lower versions below 16

Faisal Memon

How to revoke the access to the application after access has been granted ?

hari

Hi, I already done for Google plus login oauth webview integration in my android application. but, here had one problem. suppose one user created a new gmail account. he did not use or click Google plus login. at that time, that new user will come and login in my application means, how can i get user email and profile information. please any one help me. note : here important is , user not used or logged or clicked or used google plus login this is my prevoius question. just for ref: how to get email address using this scope from… Read more »

Anonymous

why is it when I run the project it only installs the project and not automatically run the project

Mahadev Dalavi

I want to signup my project with gmail and facebook please help me

david

How to revoke the access to the application after access has been granted? Any help please.

Reply to david

Hi David,

Go “Google Config.” app, so select “Connected Apps”, choose your app in the list and click in “Disconnect”.

[]’s
nglauber

Maghesh

Getting following error response,

03-04 19:10:31.604: E/TokenInfoTask(12006): Exception:
03-04 19:10:31.604: E/TokenInfoTask(12006): com.google.android.gms.auth.GoogleAuthException: Unknown
03-04 19:10:31.604: E/TokenInfoTask(12006): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)