Call This method from your onGivenEvent() function
public void showSoftKeyboard() {
try {
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE);
inputMethodManager.toggleSoftInputFromWindow(getCurrentFocus().getWindowToken(), InputMethodManager.SHOW_FORCED, 0);
} catch (Exception e) {
e.printStackTrace();
}
}