如何在Android软键盘中添加切换语言功能？

Android软键盘应用程序目前使用英语，我正在修改它以添加另一种语言。我几乎完成了新语言的布局和手动添加字母表，因为该语言尚未包含在Android中。新语言还具有与SHIFT键一起显示的键。我正在努力修复两种语言之间的切换功能：英语和新添加的

我可以通过硬编码来解决这一问题：使用按钮更改布局（xml），然后再使用按钮更改布局（xml），但我知道这不是正确的方法，因为存在

开关

功能

我正在提供相关代码。如果需要提供更多代码，请发表评论

public void onKey(int primaryCode, int[] keyCodes) {
    if (isWordSeparator(primaryCode)) {
        // Handle separator
        if (mComposing.length() > 0) {
            commitTyped(getCurrentInputConnection());
        }
        sendKey(primaryCode);
        updateShiftKeyState(getCurrentInputEditorInfo());
    } else if (primaryCode == Keyboard.KEYCODE_DELETE) {
        handleBackspace();
    } else if (primaryCode == Keyboard.KEYCODE_SHIFT) {
        handleShift();
    } else if (primaryCode == Keyboard.KEYCODE_CANCEL) {
        handleClose();
        return;
    } else if (primaryCode == LatinKeyboardView.KEYCODE_LANGUAGE_SWITCH) {
        handleLanguageSwitch();
        return;
    } else if (primaryCode == LatinKeyboardView.KEYCODE_OPTIONS) {
        // Show a menu or something'
    } else if (primaryCode == Keyboard.KEYCODE_MODE_CHANGE
            && mInputView != null) {
        Keyboard current = mInputView.getKeyboard();
        if (current == mSymbolsKeyboard || current == mSymbolsShiftedKeyboard) {
            setLatinKeyboard(mQwertyKeyboard);
        } else {
            setLatinKeyboard(mSymbolsKeyboard);
            mSymbolsKeyboard.setShifted(false);
        }
    }
}

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应用程序正是基于此。

我终于找到了解决方案。我在上述代码（问题中的代码）之后添加了以下代码以在语言之间切换：

else if (primaryCode == 10000) {
    Keyboard current = mInputView.getKeyboard();
    current = mQwertyNewKeyboard;
    mInputView.setKeyboard(current);

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

//Switch to qwertyNewShift
}else if (primaryCode == 10002) {
    Keyboard current = mInputView.getKeyboard();
    current = mQwertyNewKeyboardShift;
    mInputView.setKeyboard(current);
}

在每种语言的布局（xml）文件中，我创建了一个开关按钮，并相应地设置了

primaryCode

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

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我终于想出了解决办法。我在上述代码（问题中的代码）之后添加了以下代码以在语言之间切换：

else if (primaryCode == 10000) {
    Keyboard current = mInputView.getKeyboard();
    current = mQwertyNewKeyboard;
    mInputView.setKeyboard(current);

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

//Switch to qwertyNewShift
}else if (primaryCode == 10002) {
    Keyboard current = mInputView.getKeyboard();
    current = mQwertyNewKeyboardShift;
    mInputView.setKeyboard(current);
}

在每种语言的布局（xml）文件中，我创建了一个开关按钮，并相应地设置了

primaryCode

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