I think you should use TextWatcher
.
Just get value from edittext1
Find appropriate text for edittext2
Set text to second edittext.
edittext.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // do some stuff } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // do some stuff } @Override public void afterTextChanged(Editable s) { // do some stuff } });