content: package androidadvance.com.androidsurveyexample;
  
  import android.content.Intent;
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.View;
  import android.widget.Button;
  import com.androidadvance.androidsurvey.SurveyActivity;
  import java.io.IOException;
  import java.io.InputStream;
  
  public class MainActivity extends AppCompatActivity {
  
      private static final int SURVEY_REQUEST = 1337;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          //Nothing fancy here. Plain old simple buttons....
  
          Button button_survey_example_1 = (Button) findViewById(R.id.button_survey_example_1);
          Button button_survey_example_2 = (Button) findViewById(R.id.button_survey_example_2);
          Button button_survey_example_3 = (Button) findViewById(R.id.button_survey_example_3);
  
          button_survey_example_1.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
  
                  Intent i_survey = new Intent(MainActivity.this, SurveyActivity.class);
                  //you have to pass as an extra the json string.
                  i_survey.putExtra("json_survey", loadSurveyJson("example_survey_1.json"));
                  startActivityForResult(i_survey, SURVEY_REQUEST);
              }
          });
  
          button_survey_example_2.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  Intent i_survey = new Intent(MainActivity.this, SurveyActivity.class);
                  i_survey.putExtra("json_survey", loadSurveyJson("example_survey_2.json"));
                  startActivityForResult(i_survey, SURVEY_REQUEST);
              }
          });
  
          button_survey_example_3.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  Intent i_survey = new Intent(MainActivity.this, SurveyActivity.class);
                  i_survey.putExtra("json_survey", loadSurveyJson("example_survey_3.json"));
                  startActivityForResult(i_survey, SURVEY_REQUEST);
              }
          });
  
      }
  
  
      @Override
      protected void onActivityResult(int requestCode, int resultCode, Intent data) {
          if (requestCode == SURVEY_REQUEST) {
              if (resultCode == RESULT_OK) {
  
                  String answers_json = data.getExtras().getString("answers");
                  Log.d("****", "****************** WE HAVE ANSWERS ******************");
                  Log.v("ANSWERS JSON", answers_json);
                  Log.d("****", "*****************************************************");
  
                  //do whatever you want with them...
              }
          }
      }
  
  
      //json stored in the assets folder. but you can get it from wherever you like.
      private String loadSurveyJson(String filename) {
          try {
              InputStream is = getAssets().open(filename);
              int size = is.available();
              byte[] buffer = new byte[size];
              is.read(buffer);
              is.close();
              return new String(buffer, "UTF-8");
          } catch (IOException ex) {
              ex.printStackTrace();
              return null;
          }
      }
  
  
  }
  