"permission": {
 "scope.userLocation": {
  "desc": "你的位置信息将用于小程序位置接口的效果展示"
 }
 }

 onShow: function () {
 //初始获取定位权限
 wx.authorize({
  scope: 'scope.userLocation',
  success: (res) => {

  },
 })
 },

<input bindfocus="openMap" value='{{address}}' placeholder="点击选择详细地址"></input>

 openMap:function(e){
 var that = this
 wx.getSetting({
  success(res){
  //这里判断是否有地位权限
   if (!res.authSetting['scope.userLocation']) {
   wx.showModal({
    title: '提示',
    content: '请求获取位置权限',
    success:function(res){
    if(res.confirm==false){
     return false;
    }
    wx.openSetting({
     success(res) {
     //如果再次拒绝则返回页面并提示
     if (!res.authSetting['scope.userLocation']) {
      wx.showToast({
      title: '此功能需获取位置信息，请重新设置',
      duration: 3000,
      icon: 'none'
      })
     } else {
      //允许授权，调用地图
      that.chooseMap()
     }
     }
    })
    }
   }) 
   } else {
   //如果有定位权限，调用地图
   that.chooseMap()
   }

  }

 })
 },

 chooseMap(){
 var that = this
 wx.chooseLocation({
  success: function (res) {
  that.setData({
   address: res.address,
   latitude: res.latitude,
   longitude: res.longitude
  })
  },
  fail: function (res) {
  console.log(res)
  }
 })
 },