textwatcher

In my Android project I have had to add a TextChangedListener (TextWatcher) to a edit text view. And there are three parts in it. onTextChanged beforeTextChanged afterTextChanged What are the differents of these three. I have had to implement a search of a table on the key lisner and for my case all these three looks the same. Also they functioned the same. When I input a part of a product name the table redraws with only those products contains that entered text in it. But I used the afterTextChanged part. My code is EditProduct.addTextChangedListener(new TextWatcher() { @Override public void

I want to implement the TextWatcher interface for more than one EditText fields. Currently I am using : text1.addTextChangedListener(this); text2.addTextChangedListener(this); then overriding the methods in my Activity: 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) { // do some operation on text of text1 field // do some operation on text of text2 field } However this is working fine but I'm looking for other ways so that I can explicitly