如何在HarmonyOS中获取设备的屏幕宽度和高度？

import ohos.agp.components.ComponentContainer;
import ohos.agp.components.LayoutScatter;
import ohos.agp.components.Text;
import ohos.agp.utils.LayoutAlignment;
import ohos.agp.window.service.Display;

<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
    xmlns:ohos="http://schemas.huawei.com/res/ohos"
    ohos:height="match_parent"
    ohos:width="match_parent"
    ohos:orientation="vertical">

    <Text
        ohos:id="$+id/screenWidth"
        ohos:height="match_content"
        ohos:width="match_content"
        ohos:text="Screen Width: "
        ohos:text_size="50fp"
        ohos:layout_alignment="center"/>

    <Text
        ohos:id="$+id/screenHeight"
        ohos:height="match_content"
        ohos:width="match_content"
        ohos:text="Screen Height: "
        ohos:text_size="50fp"
        ohos:layout_alignment="center"/>

</DirectionalLayout>

public class MainActivity extends AbilitySlice {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(LayoutScatter.getInstance(this)
                .parse(ResourceTable.Layout_main, null, false));

        // 获取屏幕宽度和高度
        Display display = DisplayManager.getInstance().getDefaultDisplay(this);
        int screenWidth = display.getRealSize().width;
        int screenHeight = display.getRealSize().height;

        // 显示屏幕宽度和高度
        Text textScreenWidth = (Text) findComponentById(ResourceTable.Id_screenWidth);
        textScreenWidth.setText("Screen Width: " + screenWidth + "px");

        Text textScreenHeight = (Text) findComponentById(ResourceTable.Id_screenHeight);
        textScreenHeight.setText("Screen Height: " + screenHeight + "px");
    }
}