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.
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