LoginActivity.java

package com.example.victor.organiccity;

import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.example.victor.organiccity.request.LoginRequest;
import com.example.victor.organiccity.util.Constants;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class LoginActivity extends AppCompatActivity implements Response.Listener, Response.ErrorListener {

    private ProgressDialog progress;
    private CheckBox checkBoxRemember;
    private SharedPreferences preferences;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        preferences = PreferenceManager.getDefaultSharedPreferences(this);

        if (!(preferences.getString(Constants.TOKEN, "NONE").equals("NONE"))){
            Intent intent = new Intent(this, MainActivity.class);
            startActivity(intent);
        }

        checkBoxRemember = (CheckBox)findViewById(R.id.checkboxRemember);

    }

    public void login(View view){

        progress = new ProgressDialog(this);
        progress.setMessage("Carrecando...");
        progress.show();

        EditText login = (EditText)findViewById(R.id.login);
        EditText password = (EditText)findViewById(R.id.password);

        LoginRequest loginRequest = new LoginRequest();
        loginRequest.setLogin(login.getText().toString());
        loginRequest.setPassword(password.getText().toString());

        loginRequest.requestLogin(LoginActivity.this, LoginActivity.this);

    }

    @Override
    public void onErrorResponse(VolleyError error) {
        Log.i("LOGIN", "DEU MERDA! " + error.getMessage());
    }

    @Override
    public void onResponse(Object response) {
        JsonParser parser = new JsonParser();
        JsonObject object = (JsonObject)parser.parse(response.toString());

        JsonElement status = object.get("status");
        if (status.getAsString().equals("ok")){
            if (checkBoxRemember.isChecked()){
                SharedPreferences.Editor editor = preferences.edit();
                editor.putString(Constants.TOKEN, object.get("token").getAsString());
                editor.commit();
            }
            Intent intent = new Intent(this, MainActivity.class);
            startActivity(intent);
        }else{
            Toast.makeText(this, "Erro! Login/senha incorreto!", Toast.LENGTH_LONG).show();
        }

        progress.dismiss();
    }
}