在智慧屏上抢红包的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

---

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
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