nvue的项目开发 uts 插件，插件上UTSAndroid.getUniActivity 获取为空

// 引用android api  
import Context from "android.content.Context";  
import { UTSAndroid } from "io.dcloud.uts";  

export class dzhtool {  

    constructor() {  

    }  

    showAct(){  
        console.log("showAct")  
        console.log("getUniActivity:",UTSAndroid.getUniActivity());  

    }  

}