Implementation of writing to an array, with preservation, what to use?

There are 2 arrays 2 text edits 2 spiners and 4 buttons, how to make it so that you can add the entered word to the array with buttons and save it there even after the application is closed? Immediately I say de lists are only 10-15 values ​​in total, but the value will be unique, so you need the ability to edit

import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.Spinner; public class Activity_setting extends AppCompatActivity { Button but_del,but_add,but_text_del,but_text_add;//добавляем кнопки EditText editText,editText2;//добавляем текстовое поле Spinner spinner_resh,spinner_text;//добавляем списки public String[] data_resh = {"жел", "сам", "недозвон", "отказ", "по", "поаб", "вм"}; public String[] data_text = {"нет дома", "замена роутера", "ыволраолывр", "отказ", "по", "поаб", "вм"}; public String[] getData_resh() { return data_resh; } public String[] getData_text() { return data_text; } String sResh ="сам"; String sText ="абонента нет дома"; @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_setting); getSupportActionBar().setDisplayHomeAsUpEnabled(true); but_text_add = (Button) findViewById(R.id.but_text_add); but_text_add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); but_text_del = (Button) findViewById(R.id.but_text_del); but_text_del.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); but_add = (Button) findViewById(R.id.but_add); but_add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); but_del = (Button) findViewById(R.id.but_del); but_del.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); ArrayAdapter<String> adapter_resh = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data_resh); adapter_resh.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner_resh = (Spinner) findViewById(R.id.resh_list); spinner_resh.setAdapter(adapter_resh); ArrayAdapter<String> adapter_text = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data_text); adapter_text.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner_text = (Spinner) findViewById(R.id.text_list); spinner_text.setAdapter(adapter_text); // заголовок в этой теме нет spinner_resh.setPrompt("Title"); spinner_text.setPrompt("Title_2"); // выделяем элемент который будет стоять первый spinner_resh.setSelection(3); spinner_text.setSelection(3); // устанавливаем обработчик нажатия spinner_resh.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { // показываем позиция нажатого элемента(в переменную реш заносится значение выбранного элемента) sResh = spinner_resh.getSelectedItem().toString(); //Toast.makeText(getBaseContext(), "#" + resh, Toast.LENGTH_SHORT).show(); } @Override public void onNothingSelected(AdapterView<?> arg0) { } }); spinner_text.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { // показываем позиция нажатого элемента(в переменную реш заносится значение выбранного элемента) sText = spinner_text.getSelectedItem().toString(); //Toast.makeText(getBaseContext(), "#" + resh, Toast.LENGTH_SHORT).show(); } @Override public void onNothingSelected(AdapterView<?> arg0) { } }); } 

}