16.鸿蒙HarmonyOS App(JAVA)滑块组件Slider与评级组件Rating 

ability_main.xml

<?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:alignment="center"
    ohos:orientation="vertical">

    <Text
        ohos:id="$+id:text_helloworld"
        ohos:height="match_content"
        ohos:width="match_content"
        ohos:background_element="$graphic:background_ability_main"
        ohos:layout_alignment="horizontal_center"
        ohos:text="$string:mainability_HelloWorld"
        ohos:text_size="30vp"
        />
    <Slider
        ohos:height="match_content"
        ohos:width="match_parent"
        ohos:min="0"
        ohos:max="160"
        ohos:step="5"
        ohos:progress="20"
        />
    <Text
        ohos:id="$+id:rate2"
        ohos:height="match_content"
        ohos:width="match_content"
        ohos:background_element="$graphic:background_ability_main"
        ohos:layout_alignment="horizontal_center"
        ohos:text="评级组件(Rating)"
        ohos:text_size="30vp"
        />
    <Rating
        ohos:id="$+id:rating_sce"
        ohos:height="32vp"
        ohos:width="150vp"
        ohos:score="3.5"

        />

</DirectionalLayout>

 

 

MainAbilitySlice.java

rating.setGrainSize(1f); //最小的控制粒度
rating.setScore(6f); //当前的评级分数
rating.setIsOperable(false);//设置是否可以交互，true:不可以操作

package com.example.myapplication.slice;

import com.example.myapplication.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Rating;
import ohos.agp.components.element.PixelMapElement;
import ohos.global.resource.Resource;

public class MainAbilitySlice extends AbilitySlice {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);
        Rating rating = (Rating) findComponentById(ResourceTable.Id_rating_sce);
        rating.setGrainSize(1f); //最小的控制粒度
        rating.setScore(6f); //当前的评级分数
        rating.setIsOperable(false);//设置是否可以交互，true:不可以操作
        Resource resource = null;
        try
        {
            //设置评级分背景：点亮的五角星
            rating.setFilledElement(new PixelMapElement(getResourceManager().getResource(ResourceTable.Media_star3)));
            //rating.setHalfFilledElement(new PixelMapElement(getResourceManager().getResource(ResourceTable.Media_star3)));
            rating.setUnfilledElement(new PixelMapElement(getResourceManager().getResource(ResourceTable.Media_star3a)));
        }
        catch (Exception e)
        {

        }
    }

    @Override
    public void onActive() {
        super.onActive();
    }

    @Override
    public void onForeground(Intent intent) {
        super.onForeground(intent);
    }
}