android - How to check if an EditText was changed or not?

Question

I need to know if an EditText was changed or not, not whether or not the user inputted some text in the field, but only the if String was changed.

Answer 1

You need a TextWatcher

See it here in action:

EditText text = (EditText) findViewById(R.id.YOUR_ID);
text.addTextChangedListener(textWatcher);


private TextWatcher textWatcher = new TextWatcher() {

  public void afterTextChanged(Editable s) {
  }

  public void beforeTextChanged(CharSequence s, int start, int count, int after) {
  }

  public void onTextChanged(CharSequence s, int start, int before,
          int count) {

  }
}