Google Login Android Tutorial – Integrate GPlus Login
3673 views.If you want to signup with google account first of all need to create project in console. below we discuss everything.
Creating a Project at Google Developers Console
Log in to Google Plus account and go to this link and click on create project.
Now fill the details and click on create.
Now we need a configuration file for our android app. So go to this link. Select your app we just created on developer console. And write the package name of your android studio project we created. Finally choose country and click on continue.
In the next screen you will asked for SHA-1. To get SHA-1 Certificate. Open command prompt and navigate to jdk/bin folder. Write the following command and hit enter
Note: Make sure you have changed c:\users\belal\ with c:\users\your_user_name in the above command
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keytool -list -v -keystore "%USERPROFILE%\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android |
Copy the SHA1 and paste it to the Enable Google Services Page.
Now click on Enable Google Signin. And click on Continue to Generate Configuration Files. Now click on download google-services.json to get your configuration file. Now come to android studio.
Google Login Android Project
Copy the json configuration file (you just downloaded) and paste it inside your google login android studio project (Inside app/ directory).
Open the Top Level build.gradle file and add the following line inside dependencies.
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classpath 'com.google.gms:google-services:1.5.0-beta2' |
Inside build.gradle file add the following dependencies and sync your google login android project.
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compile 'com.google.android.gms:play-services-auth:8.3.0' compile 'com.mcxiaoke.volley:library-aar:1.0.0' |
The second line is for adding volley. I will use volley to load user’s profile image in this tutorial.
Now come to activity_main.xml.
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin"> <com.google.android.gms.common.SignInButton android:id="@+id/sign_in_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" /> <com.android.volley.toolbox.NetworkImageView android:id="@+id/profileImage" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:text="Name" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/textViewName" android:textStyle="bold" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:text="email" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/textViewEmail" android:textStyle="bold" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> |
As you can see I have created a google plus login button with two TextView (to show name and email) and a NetworkImageView (to show profile pic).
Now come to MainActivity.java and write the following code.
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package com.androindian.google; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.TextView; import android.widget.Toast; import com.android.volley.toolbox.ImageLoader; import com.android.volley.toolbox.NetworkImageView; import com.google.android.gms.auth.api.Auth; import com.google.android.gms.auth.api.signin.GoogleSignInAccount; import com.google.android.gms.auth.api.signin.GoogleSignInOptions; import com.google.android.gms.auth.api.signin.GoogleSignInResult; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.SignInButton; import com.google.android.gms.common.api.GoogleApiClient; /** * Created by raj on 05-10-2016. */ public class MainActivity extends AppCompatActivity implements View.OnClickListener, GoogleApiClient.OnConnectionFailedListener { //Signin button private SignInButton signInButton; //Signing Options private GoogleSignInOptions gso; //google api client private GoogleApiClient mGoogleApiClient; //Signin constant to check the activity result private int RC_SIGN_IN = 100; //TextViews private TextView textViewName; private TextView textViewEmail; private NetworkImageView profilePhoto; //Image Loader private ImageLoader imageLoader; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Initializing Views textViewName = (TextView) findViewById(R.id.textViewName); textViewEmail = (TextView) findViewById(R.id.textViewEmail); profilePhoto = (NetworkImageView) findViewById(R.id.profileImage); //Initializing google signin option gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN) .requestEmail() .build(); //Initializing signinbutton signInButton = (SignInButton) findViewById(R.id.sign_in_button); signInButton.setSize(SignInButton.SIZE_WIDE); signInButton.setScopes(gso.getScopeArray()); //Initializing google api client mGoogleApiClient = new GoogleApiClient.Builder(this) .enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */) .addApi(Auth.GOOGLE_SIGN_IN_API, gso) .build(); //Setting onclick listener to signing button signInButton.setOnClickListener(this); } //This function will option signing intent private void signIn() { //Creating an intent Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient); //Starting intent for result startActivityForResult(signInIntent, RC_SIGN_IN); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); //If signin if (requestCode == RC_SIGN_IN) { GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data); //Calling a new function to handle signin handleSignInResult(result); } } //After the signing we are calling this function private void handleSignInResult(GoogleSignInResult result) { //If the login succeed if (result.isSuccess()) { //Getting google account GoogleSignInAccount acct = result.getSignInAccount(); //Displaying name and email textViewName.setText(acct.getDisplayName()); textViewEmail.setText(acct.getEmail()); //Initializing image loader imageLoader = CustomVolleyRequest.getInstance(this.getApplicationContext()) .getImageLoader(); imageLoader.get(acct.getPhotoUrl().toString(), ImageLoader.getImageListener(profilePhoto, R.mipmap.ic_launcher, R.mipmap.ic_launcher)); //Loading image profilePhoto.setImageUrl(acct.getPhotoUrl().toString(), imageLoader); } else { //If login fails Toast.makeText(this, "Login Failed", Toast.LENGTH_LONG).show(); } } @Override public void onClick(View v) { if (v == signInButton) { //Calling signin signIn(); } } @Override public void onConnectionFailed(ConnectionResult connectionResult) { } } |
For loading image from URL I have used a Custom Volley Request from an old tutorial Load Image from Internet Using Volley. For the custom volley request you have to create the following class.
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package com.androindian.google; import android.content.Context; import android.graphics.Bitmap; import android.support.v4.util.LruCache; import com.android.volley.Cache; import com.android.volley.Network; import com.android.volley.RequestQueue; import com.android.volley.toolbox.BasicNetwork; import com.android.volley.toolbox.DiskBasedCache; import com.android.volley.toolbox.HurlStack; import com.android.volley.toolbox.ImageLoader; /** * Created by raj on 05-10-2016. */ public class CustomVolleyRequest { private static CustomVolleyRequest customVolleyRequest; private static Context context; private RequestQueue requestQueue; private ImageLoader imageLoader; private CustomVolleyRequest(Context context) { this.context = context; this.requestQueue = getRequestQueue(); imageLoader = new ImageLoader(requestQueue, new ImageLoader.ImageCache() { private final LruCache<String, Bitmap> cache = new LruCache<String, Bitmap>(20); @Override public Bitmap getBitmap(String url) { return cache.get(url); } @Override public void putBitmap(String url, Bitmap bitmap) { cache.put(url, bitmap); } }); } public static synchronized CustomVolleyRequest getInstance(Context context) { if (customVolleyRequest == null) { customVolleyRequest = new CustomVolleyRequest(context); } return customVolleyRequest; } public RequestQueue getRequestQueue() { if (requestQueue == null) { Cache cache = new DiskBasedCache(context.getCacheDir(), 10 * 1024 * 1024); Network network = new BasicNetwork(new HurlStack()); requestQueue = new RequestQueue(cache, network); requestQueue.start(); } return requestQueue; } public ImageLoader getImageLoader() { return imageLoader; } } |
Now add internet permission to your manifest and run your google login android application.
