在HarmonyOS鸿蒙Next智慧屏上抢红包的Demo和代码（基于鸿蒙模拟器）

在HarmonyOS鸿蒙Next智慧屏上抢红包的Demo和代码（基于鸿蒙模拟器）

效果演示

说下遇到的问题

1. 在XML中使用PositionLayout布局增加子组件后，子组件使用setContentPosition(x,y)造成定位失败。
2. 无法父组件无法删除子组件，removeComponent()无效。
3. 无法隐藏组件setVisibility();值是4或者8都无效。demo需要删除元素，无奈只能设置元素的width,height为0。

以下是代码片段

<?xml version="1.0" encoding="utf-8"?>
<PositionLayout xmlns:ohos="http://schemas.huawei.com/res/ohos"
    ohos:width="match_parent"
    ohos:height="match_parent"
    ohos:id="$+id:p">
    <Text 
        ohos:id="$+id:fenshu"
        ohos:text="分数：0"
        ohos:background_element="#66FF00"
        ohos:padding="10vp"/>
</PositionLayout>

package com.example.tv.slice;

import com.example.tv.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.animation.Animator;
import ohos.agp.animation.AnimatorProperty;
import ohos.agp.colors.RgbColor;
import ohos.agp.components.*;
import ohos.agp.components.element.ShapeElement;
import ohos.app.Context;

import java.util.Random;
import java.util.Timer;
import java.util.TimerTask;

//1920*1080
public class MainAbilitySlice extends AbilitySlice {
    int count = 0;

    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_layout1);
        System.out.println("MainAbilitySlice>>>>>>>>>>>>>>>>onStart");
        Context context = this;
        PositionLayout positionLayout = (PositionLayout) findComponentById(ResourceTable.Id_p);
        Text text = (Text) findComponentById(ResourceTable.Id_fenshu);
        text.setContentPosition(1750, 0);
        text.setHeight(ComponentContainer.LayoutConfig.MATCH_CONTENT);
        text.setWidth(ComponentContainer.LayoutConfig.MATCH_CONTENT);
        Timer timer = new Timer();
        timer.scheduleAtFixedRate(new TimerTask() {
            public void run() {
                Random random = new Random();
                int rFenshu = random.nextInt(100);
                Button button = new Button(context);
                button.setWidth(100);
                button.setHeight(100);
                button.setText("红包:" + rFenshu);
                button.setClickedListener((c) -> {
                    button.setWidth(0);
                    button.setHeight(0);
                    count += rFenshu;
                    text.setText("分数：" + count);
                });
                ShapeElement shapeElement = new ShapeElement();
                shapeElement.setRgbColor(new RgbColor(255, 0, 0));
                button.setBackground(shapeElement);
                int i1 = random.nextInt(1720);
                button.setContentPosition(i1, 0);
                positionLayout.addComponent(button);
                AnimatorProperty animatorProperty = button.createAnimatorProperty();
                animatorProperty.moveToY(700).setDuration(4000);
                animatorProperty.setStateChangedListener(new Animator.StateChangedListener() {
                    @Override
                    public void onStart(Animator animator) {}

                    @Override
                    public void onStop(Animator animator) {}

                    @Override
                    public void onCancel(Animator animator) {}

                    @Override
                    public void onEnd(Animator animator) {
                        button.setWidth(0);
                        button.setHeight(0);
                    }

                    @Override
                    public void onPause(Animator animator) {}

                    @Override
                    public void onResume(Animator animator) {}
                });
                animatorProperty.start();
            }
        }, 1000,1000);
    }

    @Override
    protected void onActive() {
        super.onActive();
        System.out.println("MainAbilitySlice>>>>>>>>>>>>>>>>onActive");
    }

    @Override
    protected void onInactive() {
        super.onInactive();
        System.out.println("MainAbilitySlice>>>>>>>>>>>>>>>>onInactive");
    }

    @Override
    protected void onBackground() {
        super.onBackground();
        System.out.println("MainAbilitySlice>>>>>>>>>>>>>>>>onBackground");
    }

    @Override
    protected void onForeground(Intent intent) {
        super.onForeground(intent);
        System.out.println("MainAbilitySlice>>>>>>>>>>>>>>>>onForeground");
    }

    @Override
    protected void onStop() {
        super.onStop();
        System.out.println("MainAbilitySlice>>>>>>>>>>>>>>>>onStop");
    }
}

作者：顶风少年