如何从ability_main.xml初始化RgbColor？

public class MyAbility extends Ability {
    private RgbColor rgbColor;

    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);

        // 获取TextView组件的实例
        Text redText = (Text) findComponentById(ResourceTable.Id_red_text);
        Text greenText = (Text) findComponentById(ResourceTable.Id_green_text);
        Text blueText = (Text) findComponentById(ResourceTable.Id_blue_text);

        // 创建并初始化RgbColor对象
        rgbColor = new RgbColor();
        rgbColor.setRed(255);
        rgbColor.setGreen(0);
        rgbColor.setBlue(0);

        // 将RGB颜色值设置给TextView组件
        redText.setText(String.valueOf(rgbColor.getRed()));
        greenText.setText(String.valueOf(rgbColor.getGreen()));
        blueText.setText(String.valueOf(rgbColor.getBlue()));
    }
}