How To Add Switch Language Functionality In The Android Soft Keyboard?

The Android Soft Keyboard application currently has English language, and I am modifying it to add another language into it. I am almost done with layout of new language and adding

Solution 1:

I finally figured out the solution. I added the following code right after the above code (code in the question) to switch between languages:

elseif (primaryCode == 10000) {
    Keyboardcurrent= mInputView.getKeyboard();
    current = mQwertyNewKeyboard;
    mInputView.setKeyboard(current);

//Switch to qwerty (English Main)
}elseif (primaryCode == 10001) {
    Keyboardcurrent= mInputView.getKeyboard();
    current = mQwertyKeyboard;
    mInputView.setKeyboard(current);

//Switch to qwertyNewShift
}elseif (primaryCode == 10002) {
    Keyboardcurrent= mInputView.getKeyboard();
    current = mQwertyNewKeyboardShift;
    mInputView.setKeyboard(current);
}

And in the layout (xml) file of each language, I created a switch button and set the primaryCode accordingly.

<Key android:codes="10001" android:keyIcon="@drawable/sym_keyboard_language_switch" android:keyWidth="10%p"/>