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

    <!-- 标题行 -->
    <DirectionalLayout
        ohos:height="wrap_content"
        ohos:width="match_parent"
        ohos:padding="16vp"
        ohos:background_element="#2196F3">

        <Text
            ohos:height="wrap_content"
            ohos:width="wrap_content"
            ohos:text="留言区域"
            ohos:text_color="#FFFFFF"
            ohos:text_size="20vp" />
    </DirectionalLayout>

    <!-- 留言输入区域 -->
    <TextArea
        ohos:id="$+id:messageTextArea"
        ohos:height="150vp"
        ohos:width="match_parent"
        ohos:margin="16vp"
        ohos:hint="在这里输入留言"
        ohos:input_type="textMultiLine"
        ohos:max_text_length="500" />

    <!-- 提交按钮 -->
    <Button
        ohos:height="wrap_content"
        ohos:width="match_parent"
        ohos:margin="16vp"
        ohos:text="提交"
        ohos:text_size="16vp"
        ohos:id="$+id:submitButton"
        ohos:onclick="onSubmitButtonClick" />

    <!-- 图片区域 -->
    <Image
        ohos:height="200vp"
        ohos:width="match_parent"
        ohos:margin="16vp"
        ohos:src="image:sample_image" />

</Container>

import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Component;
import ohos.agp.components.Text;
import ohos.agp.components.TextField;
import ohos.agp.components.element.ShapeElement;

public class YourAbilitySlice extends AbilitySlice {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_your_layout);

        // 获取留言输入区域和提交按钮
        TextField messageTextArea = (TextField) findComponentById(ResourceTable.Id_messageTextArea);
        Component submitButton = findComponentById(ResourceTable.Id_submitButton);

        // 为提交按钮添加点击事件监听器
        submitButton.setClickedListener(component -> {
            // 在这里执行提交操作，可以获取留言输入区域的内容
            String message = messageTextArea.getText();
            // 进行相应的处理
            // ...
        });
    }
}