GooglePlusLoginUtil

Login with Google Plus Utility

Pre-requisite###

Official Document: https://developers.google.com/+/mobile/android/sign-in

Tutorial from AndroidHive : http://www.androidhive.info/2014/02/android-login-with-google-plus-account-1/

Note: Please read AndroidHive article for initial setup & other process

Usage

Step 1: Import "GooglePlusLoginUtils.java" class in your package

Step 2: Implement callback listener

public class LoginActivity extends Activity implements GooglePlusLoginUtils.GPlusLoginStatus 

Step 3: Declare callback method

public void OnSuccessGPlusLogin(Bundle profile) {
	Log.i(TAG,profile.getString(GooglePlusLoginUtils.NAME));       
	Log.i(TAG,profile.getString(GooglePlusLoginUtils.EMAIL));
	Log.i(TAG,profile.getString(GooglePlusLoginUtils.PHOTO));
	Log.i(TAG,profile.getString(GooglePlusLoginUtils.PROFILE));
}

Step 4: Declare object of GooglePlusLoginUtils.java

private GooglePlusLoginUtils gLogin;

Step 5: Initialize object in onCreate method

 gLogin = new GooglePlusLoginUtils(this, R.id.activity_login_gplus); // Id of login button
    gLogin.setLoginStatus(this);

Step 6: Declare few supporting methods

@Override
protected void onStart() {
        super.onStart();
        gLogin.connect();
    }
    @Override
    protected void onStop() {
        super.onStop();
        gLogin.disconnect();
    }
    @Override
    protected void onActivityResult(int requestCode, int responseCode,
                                    Intent intent) {
        gLogin.onActivityResult(requestCode, responseCode, intent);

    }

FAQ###

Q: What is the problem of above approach ?

A: You activity has a lot of scattered code for Google Pluse login, It will be more complex and unmanageable when you will have another social network login like Facebook and Twitter.

Q: How I will receive a response for login success?

A: You need to implement interface "GPlusloginStatus", on successful login you will receive callback "OnSuccessGPlusLogin"

Q: What will be received on login success ?

A: You will have Display name, Email , Photo and Profile url.

Q: Do I need to handle login failure / error ?

A: No, GooglePlusLoginUtils.java will handle login failure, error and display appropriate message on screen.