hbuilder+vue单页应用打包成APP后退按钮返回上一页的问题

APP打包工具:hbuilder

需要js包:mui.js ,引入方法https://www.cnblogs.com/v616/p/11290281.html

实现原理:在vue根组件App.vue监听安卓机,按后退键时候vue的路由path

代码App.vue

代码片段:
data() {
    return {
      tabbarShow:true,
      arrTab:['/home','/cat','/history','/me']
    };
  },
  mounted(){
    // 安卓后退键
    this.$mui.plusReady( () =>{
      var backcount = 0;
      this.$mui.back = ()=> {
        let path = this.$route.path;
        console.log("path:"+path);

        if (this.arrTab.includes(path)) {
          // 主导航页
          if (this.$mui.os.ios) return;
          if (backcount > 0) {
            if (window.plus) plus.runtime.quit();
            return;
          };
          this.$toast('再点击一次退出应用!');
          backcount++;
          setTimeout( () =>{
            backcount = 0;
          }, 2000);
        } else {
          // 子页面
          console.log('子页面后退键');
          this.$router.go(-1);
        }
      };
    })
  },