HarmonyOS Swiper滑动切换页面后，怎样才能检测到页面是否渲染完成

可以注册监听，参考如下：

import { inspector } from '@kit.ArkUI';

private listener: inspector.ComponentObserver = inspector.createComponentObserver('Swiper_ID');
private onDrawComplete = () => {
  // 2.组件绘制完成
};
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Swiper组件

.id('Swiper_ID')
aboutToAppear(): void {
  // 1.渲染开始
  this.listener.on('draw', this.onDrawComplete);
}
aboutToDisappear() {
  //3.销毁之前取消注册回调
  this.listener.off('draw', this.onDrawComplete);
}
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参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-faqs-V5/faqs-arkui-302-V5