#鸿蒙通关秘籍#如何在HarmonyOS NEXT中实现组件堆叠的多层次视觉效果？

在HarmonyOS NEXT中，可使用Stack组件来实现组件堆叠的多层次视觉效果。Stack组件允许在同一位置放置多个组件，通过调整组件的透明度和高度属性，能够获得层次分明的视觉效果。在代码中，通过Scroll组件的onScroll滚动事件回调函数来动态调整各个组件的属性，实现视觉效果的变化。以下是相关代码示例：

Stack({ alignContent: Alignment.Top }) {
  Scroll(this.scroller) {
    Column() {
      // 添加内容
    }
    .onScroll(() => {
      let yOffset: number = this.scroller2.currentOffset().yOffset;
      this.Height2 = this.Height2_raw - yOffset * 0.5;

      if (1 - yOffset / this.IconList2_raw >= 0) {
        this.Opacity2 = 1 - yOffset / this.IconList2_raw;
      } else {
        this.Opacity2 = 0;
      }

      this.ratio = this.Opacity2;

      if (1 - yOffset / this.IconList1_raw > 0) {
        this.isChange = false;
        this.Opacity = 1 - yOffset / this.IconList1_raw;
        this.marginSpace = this.maxMarginSpace;
      } else {
        this.isChange = true;
        this.Opacity = (yOffset - this.IconList1_raw) / this.maxMarginSpace;
        this.marginSpace = this.IconList3_raw - yOffset > this.minmarginSpace 
                          ? (this.IconList3_raw - yOffset) 
                          : this.minmarginSpace;
      }
    });
  }
}