Save user input in edittext

Question

I’m new using Android Studio and would like to save the user entry in a edittext And even if the user presses the back button or closes the application the typed text remains on edittext

I wonder if someone could help me ?

Answer 1

Android, in turn, provides various forms of data persistence. Among them are:

1. Save data to the web;

2. a private database;

3. External rescue and Intern;

4. Sharedpreferences.

   In your case, we can use the simplest, which is the Sharedpreferences. This method saves your data(values) in native system keys so that you can access it at any time you wish. Her mode of use is also very simple.

    public class Calc extends Activity {
    public static final String PREFS_NAME = "MyPrefsFile";

    @Override
    protected void onCreate(Bundle state){
       super.onCreate(state);
       // Put code

       // Regravar dados, se caso for necessário.
       SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
       String eValue = settings.getString("EditText_value", "xxxx");
    }

    @Override
    protected void onStop(){
       super.onStop();

      // Este método faz com que, quando a aplicação for pausada, seja inserido um valor na Preference. Eu acredito que seja isto que você quer.
      SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
      SharedPreferences.Editor editor = settings.edit();
      editor.putString("Edittext_value", myEditText.getText().toString()); // Isto é oque você quer.

      // Salvar valor!
      editor.commit();
    }

Observing: To save the value of your Edittext, first take its value and pass it to Sharedpreferences as a string.

For more information, see the Android documentation: Storage Options

Answer 2

You will need to control the information of this Edittext using the life cycle of your Activity on Android.

The ideal would be to persist the information of this Edittext, in the methods onPause(), onStop(), and onDestroy() within your Activity. And then return the value of it in the methods onCreate(), onStart(), onRestart(), and onResume().

Reading a little bit and exploring the life cycle of an Activity can help you a lot.

has a very good pdf here