Question

So I have heard that key events are redundant and input methods generally don’t trigger them. But I’m just starting to develop a terminal-like app and I want to parse the input key by key, not after “Done”/”Enter” is clicked (for example, for detecting when to insert hard line breaks, just like in commandlines). I use EditText but appending and deleting from TextView is also an option (preferred by me, less combinations with styling and inputtypes).

So the actual question is:
How to listen to input method input key by key? Is it even possible?

Answer 1

editText.setOnKeyListener(new OnKeyListener() {
    public boolean onKey(View v, int keyCode, KeyEvent event) {

    }
});

or

editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

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

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });