Daten/Code meiner App speichern?

package s_cube.de.project;


import android.app.AlertDialog;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputType;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;


public class Pass extends AppCompatActivity implements View.OnClickListener {


    private Button btn1;
    private EditText text1;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pass);


        btn1 = (Button) findViewById(R.id.button);
        btn1.setOnClickListener(this);


        text1 = (EditText) findViewById(R.id.editText);
        text1.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
    }
    public void onClick (View view){
        if (text1.getText().toString().equals("pass")){
            AlertDialog ad = new AlertDialog.Builder(this).create();
            ad.setMessage("Super");
            ad.show();
            Intent intent = new Intent(this,Popup.class);
            startActivity(intent);
            btn1.setEnabled(false);
        }else{
            String message = "Leider falsch";
            Toast.makeText(this,message, Toast.LENGTH_LONG).show();
        }


    }


}