protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.Population);

            EditText  edtPopBrazil = FindViewById <EditText>(Resource.Id.edt_pop_brazil);
            EditText  edtPopEua    = FindViewById <EditText>(Resource.Id.edt_pop_eua);
            ImageView imgFlaBrazil = FindViewById <ImageView>(Resource.Id.img_flag_brazil);
            ImageView imgFlaEua    = FindViewById <ImageView>(Resource.Id.img_flag_eua);

            Button btnGoToMain = FindViewById <Button>(Resource.Id.btn_go_to_main_screen);
            Button btnReturn   = FindViewById <Button>(Resource.Id.btn_return);
            Button btnExit     = FindViewById <Button>(Resource.Id.btn_exit);

            try
            {
                edtPopBrazil.Text = Intent.GetIntExtra("pop-brazil", defaultValue: 0).ToString();
                edtPopEua.Text    = Intent.GetIntExtra("pop-eua", defaultValue: 0).ToString();
                imgFlaBrazil.SetImageResource(Resource.Drawable.brasil_flag);
                imgFlaEua.SetImageResource(Resource.Drawable.eua_flag);

                InformationDAO informationDAO = new InformationDAO(this);
                var            informations   = informationDAO.GetAll();

                foreach (var info in informations)
                {
                    Toast.MakeText(this, info.ImmBrazil.ToString(), ToastLength.Short).Show();
                    Toast.MakeText(this, info.EmiBrazil.ToString(), ToastLength.Short).Show();
                    Toast.MakeText(this, info.ImmEua.ToString(), ToastLength.Short).Show();
                    Toast.MakeText(this, info.EmiEua.ToString(), ToastLength.Short).Show();
                }
            }
            catch (System.Exception ex)
            {
                Toast.MakeText(this, ex.Message, ToastLength.Short).Show();
            }

            btnGoToMain.Click += delegate
            {
                Intent intentMain = new Intent(this, typeof(MainActivity));
                intentMain.AddFlags(ActivityFlags.ClearTop);
                StartActivity(intentMain);
            };

            btnReturn.Click += delegate
            {
                this.Finish();
            };

            btnExit.Click += delegate
            {
                Process.KillProcess(Process.MyPid());
            };
        }
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.Capitals);

            EditText edtImmBrazil = FindViewById <EditText>(Resource.Id.edt_immigration_brazil);
            EditText edtEmiBrazil = FindViewById <EditText>(Resource.Id.edt_emigration_brazil);
            EditText edtImmEua    = FindViewById <EditText>(Resource.Id.edt_immigration_eua);
            EditText edtEmiEua    = FindViewById <EditText>(Resource.Id.edt_emigration_eua);

            Button btnCompute = FindViewById <Button>(Resource.Id.btn_compute);
            Button btnReturn  = FindViewById <Button>(Resource.Id.btn_return);


            btnCompute.Click += delegate {
                try
                {
                    int immBrazil = int.Parse(edtImmBrazil.Text);
                    int emiBrazil = int.Parse(edtEmiBrazil.Text);
                    int immEua    = int.Parse(edtImmEua.Text);
                    int emiEua    = int.Parse(edtEmiEua.Text);

                    int popBrazil = immBrazil - emiBrazil;
                    int popEua    = immEua - emiEua;

                    var information = new Information();
                    information.ImmBrazil = immBrazil;
                    information.EmiBrazil = emiBrazil;
                    information.ImmEua    = immEua;
                    information.EmiEua    = emiEua;

                    InformationDAO informationDAO = new InformationDAO(this);
                    informationDAO.Insert(information);
                    Toast.MakeText(this, "Salvando informações...", ToastLength.Short).Show();

                    Compute(popBrazil, popEua);
                }
                catch (System.Exception ex)
                {
                    Toast.MakeText(this, ex.Message, ToastLength.Short).Show();
                }
            };

            btnReturn.Click += delegate {
                this.Finish();
            };
        }