LoginActivity

LoginActivity.java

package com.domain.app;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.IntentSender;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.common.*;
import com.google.android.gms.common.GooglePlayServicesClient.*;
import com.google.android.gms.plus.PlusClient;



public class LoginActivity extends Activity implements View.OnClickListener,
        ConnectionCallbacks, OnConnectionFailedListener {
    private static final String TAG = "LoginActivity";
    private static final int REQUEST_CODE_RESOLVE_ERR = 9000;

    private ProgressDialog mConnectionProgressDialog;
    private PlusClient mPlusClient;
    private ConnectionResult mConnectionResult;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mPlusClient = new PlusClient.Builder(this, this, this)
                .setActions(
                        "http://schemas.google.com/AddActivity", "http://schemas.google.com/BuyActivity")
                .setScopes("PLUS_LOGIN")
                .build();
        // A barra de progresso deve ser exibida se a falha de conexão não for resolvida.
        mConnectionProgressDialog = new ProgressDialog(this);
        mConnectionProgressDialog.setMessage("Signing in...");
    }

    @Override
    protected void onStart() {
        super.onStart();
        mPlusClient.connect();
    }

    @Override
    protected void onStop() {
        super.onStop();
        mPlusClient.disconnect();
    }

    @Override
    public void onConnectionFailed(ConnectionResult result) {
        if (result.hasResolution()) {
            try {
                result.startResolutionForResult(this, REQUEST_CODE_RESOLVE_ERR);
            } catch (IntentSender.SendIntentException e) {
                mPlusClient.connect();
            }
        }
        // Salvar o resultado e solucionar a falha de conexão mediante clique do usuário.
        mConnectionResult = result;
    }

    @Override
    protected void onActivityResult(int requestCode, int responseCode, Intent intent) {
        if (requestCode == REQUEST_CODE_RESOLVE_ERR && responseCode == RESULT_OK) {
            mConnectionResult = null;
            mPlusClient.connect();
        }
    }


    @Override
    public void onConnected(Bundle bundle) {
        String accountName = mPlusClient.getAccountName();
        Toast.makeText(this, accountName + " is connected.", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onDisconnected() {
        Log.d(TAG, "disconnected");
    }

    @Override
    public void onClick(View v) {

    }
}