Question

I’m new to Android and I don’t know how to retrive the values stored using sharedpreferences, I couldn’t find any example of what I have to write on the other activity to use these values. If someone can help me I would really appreciate it

This is how I am storing the data:

protected void onResume() {
    super.onResume();
    SharedPreferences prefs = getPreferences(0);
    String restoredText1 = prefs.getString("cpw", "30");
    if (restoredText1 != null) {
        savedcostperworker.setText(restoredText1, TextView.BufferType.EDITABLE);

        int selectionStart = prefs.getInt("selection-start", -1);
        int selectionEnd = prefs.getInt("selection-end", -1);
        if (selectionStart != -1 && selectionEnd != -1) {
            savedcostperworker.setSelection(selectionStart, selectionEnd);
        }
    }
}

protected void onPause() {
    super.onPause();
    SharedPreferences.Editor editor = getPreferences(0).edit();
    editor.putString("cpw", savedcostperworker.getText().toString());
    editor.putInt("selection-start", savedcostperworker.getSelectionStart());
    editor.putInt("selection-end", savedcostperworker.getSelectionEnd());
}

private EditText savedcostperworker;

Now I want to show the value “cpw” in a TextView in another activity, but I don’t know how

Answer 1

You forgot to call commit() to save your Editor changes:

SharedPreferences.Editor editor = getPreferences(0).edit();
...
editor.commit();

---

Now I want to show the value “cpw” in a TextView in another activity, but I don’t know how

Simply call getSharedPreferences() with the first Activity’s name and use it like before:

SharedPreferences prefs = getSharedPreferences("MainActivity", 0);
String string = prefs.getString("cpw", "String not found");
Log.v("SharedPrefs", string);

You cannot use getPreferences() in the second Activity because it will call getSharedPreferences() with the wrong file name. See getPreferences() documentation for more information.