Google Android - это несложно

Код: Выделить всё

public boolean onKey(View arg0, int arg1, KeyEvent event) {					
		Log.d("green", ""+ arg1);
		return false;
	}

Код: Выделить всё

public class MainActivity extends Activity implements  TextWatcher {
	EditText editText1;
	TextView textView1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		textView1 = (TextView) findViewById(R.id.textView1);
		editText1 = (EditText) findViewById(R.id.editText1);
		editText1.addTextChangedListener(this);
	}

	
	@Override
	public void afterTextChanged(Editable s) {
		textView1.setText(editText1.getText().toString());
		
	}

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