在mpvue中，onPullDownRefresh直接能用
1、首先要保证配置

  {path: 'pages/user',config: {navigationBarTitleText: '个人中心',navigationBarBackgroundColor: theme['@primary-color'],enablePullDownRefresh: true}}

2、和methods同层级写

 onPullDownRefresh() {wx.showNavigationBarLoading()console.log('pull')wx.stopPullDownRefresh()
}