Android development - how to change keyboard layout on button press

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Java

Android

keyboard

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I'm working on keyboard app and I want to change layout after user press particular key on keyboard. Check below images

For Example :

Here - After we touch that button layout changes into this

Can anyone explain me how it's done?

This is my java class which extends InputMethodService

public class SimpleIME extends InputMethodService
        implements KeyboardView.OnKeyboardActionListener {

    private KeyboardView kv;
    private Keyboard keyboard;
    private int switchLock = 0;

    private boolean caps = false;

    @Override
    public void onKey(int primaryCode, int[] keyCodes) {
        InputConnection ic = getCurrentInputConnection();
        playClick(primaryCode);
        switch (primaryCode) {
            case Keyboard.KEYCODE_DELETE:
                ic.deleteSurroundingText(1, 0);
                break;
            case Keyboard.KEYCODE_SHIFT:
                caps = !caps;
                keyboard.setShifted(caps);
                kv.invalidateAllKeys();
                break;
            case Keyboard.KEYCODE_DONE:
                ic.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER));
                break;

            default:
                char code = (char) primaryCode;
                if (Character.isLetter(code) && caps) {
                    code = Character.toUpperCase(code);
                }
                ic.commitText(String.valueOf(code), 1);
        }
    }

    @Override
    public void onPress(int primaryCode) {
    }

    @Override
    public void onRelease(int primaryCode) {
    }

    @Override
    public void onText(CharSequence text) {
    }

    @Override
    public void swipeDown() {
    }

    @Override
    public void swipeLeft() {
    }

    @Override
    public void swipeRight() {
    }

    @Override
    public void swipeUp() {
    }

    @Override
    public View onCreateInputView() {
        kv = (KeyboardView) getLayoutInflater().inflate(R.layout.keyboard, null);
        keyboard = new Keyboard(this, R.xml.qwerty);
        kv.setKeyboard(keyboard);
        kv.setOnKeyboardActionListener(this);
        return kv;
    }

    private void playClick(int keyCode) {
        AudioManager am = (AudioManager) getSystemService(AUDIO_SERVICE);
        switch (keyCode) {
            case 32:
                am.playSoundEffect(AudioManager.FX_KEYPRESS_SPACEBAR);
                break;
            case Keyboard.KEYCODE_DONE:
            case 10:
                am.playSoundEffect(AudioManager.FX_KEYPRESS_RETURN);
                break;
            case Keyboard.KEYCODE_DELETE:
                am.playSoundEffect(AudioManager.FX_KEYPRESS_DELETE);
                break;
            default:
                am.playSoundEffect(AudioManager.FX_KEYPRESS_STANDARD);
        }
    }
}

What I have tried:

I tried calling UpdateInputView Method to change layout but it didn't worked out.