如何在android自定义键盘中更改主题

// 创建键盘主题资源文件
// res/keyboard_theme/keyboard_theme.xml

// 定义键盘主题样式
<style name="CustomKeyboardTheme" parent="android:Theme">
    <item name="android:keyBackground">@drawable/custom_key_background</item>
    <item name="android:keyTextColor">#FFFFFF</item>
    <item name="android:popupBackground">@drawable/custom_popup_background</item>
    <!-- 其他样式属性 -->
</style>

// 应用键盘主题
public class CustomKeyboard extends KeyboardView {

    public CustomKeyboard(Context context, AttributeSet attrs) {
        super(context, attrs);
        setKeyboardTheme(R.style.CustomKeyboardTheme);
    }

    private void setKeyboardTheme(int themeResId) {
        // 设置键盘主题
        // ...
    }

    private void refreshKeyboard() {
        // 刷新键盘界面
        // ...
    }
}