android – Save SharedPreferences by assigning a key to it using getDefaultSharedPreferences()

Question:

I have a class to save the email and user that connect in the application with sharedpreferences , but it saves the data without any reference key so when I want to save a different data without overwriting the previous one it does not do it, I imagine that I will need assign some key to reference it and be able to save the data I want without stepping on the previous one and assigning it a name:

public void save(Context context, String text) {
    SharedPreferences settings;
    Editor editor;

    settings = PreferenceManager.getDefaultSharedPreferences(context);

    editor = settings.edit();

    editor.putString(PREFS_KEY, text);

    editor.commit();
}

Here I call the function:

String email = _emailText.getText().toString();
sharedPreference.save(this, email);

Answer:

I don't think that the value is not being saved, the problem is that the saved value has to be obtained in this way, (assuming that your key is email )

SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String email = preferences.getString("email, "");

Remember that you use getDefaultSharedPreferences which does not require a name for the preferences file, but its preference values ​​do.

I add how it is done with the two methods:

Save and get a value using getDefaultSharedPreferences()

public void saveValuePreference(Context context, String text) {
    SharedPreferences settings;
    SharedPreferences.Editor editor;
    settings = PreferenceManager.getDefaultSharedPreferences(context);
    editor = settings.edit();
    editor.putString("email", text);
    editor.commit();
}

public String getValuePreference(Context context) {
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
    return  preferences.getString("email", "");
}

Save and get a value using getSharedPreferences()

private String PREFS_KEY = "mispreferencias";

public void saveValuePreference(Context context, String text) {
    SharedPreferences settings = context.getSharedPreferences(PREFS_KEY, MODE_PRIVATE);
    SharedPreferences.Editor editor;
    editor = settings.edit();
    editor.putString("email", text);
    editor.commit();
}



public String getValuePreference(Context context) {
    SharedPreferences preferences = context.getSharedPreferences(PREFS_KEY, MODE_PRIVATE);
    return  preferences.getString("email", "");
}