How to get message (Toast) ,if any key pressed in keyboard
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
 etext =(EditText)findViewById(R.id.editText1);
 etext.setOnKeyListener(this);
 }
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
     if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) {
          Toast.makeText(this, etext.getText(), Toast.LENGTH_SHORT).show(); //show tost here
          return true;
     }
    return false;
}*

final EditText edittext = (EditText) findViewById(R.id.edittext);
edittext.setOnKeyListener(new OnKeyListener() {
    public boolean onKey(View v, int keyCode, KeyEvent event) {
       if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) {
          Toast.makeText(this, "show message here", Toast.LENGTH_SHORT).show(); //show tost here
          return true;
     }
   return false;
 }