wx.getSetting({
    success(res)=>{
        if (!res.authSetting['scope']) {
          console.log('未授權(quán)')
              wx.authorize({
                scope: 'scope',
                success() {
                    console.log('授權(quán)成功')
                },
                fail() {
                    console.log('授權(quán)失敗，讓用戶手動(dòng)授權(quán)')
                    wx.showModal({
                        title: '溫馨提示',
                        content: '未打開(kāi)xxx權(quán)限',
                        showCancel: false,
                        success(res) {
                        if (res.confirm) {
                            console.log('用戶點(diǎn)擊確定')
                            wx.openSetting({
                                success(res) {
                                    console.log(res.authSetting)
                                    res.authSetting = {
                                    "scope.camera": true,
                                    }
                                }
                            })
                        } else if (res.cancel) {
                            console.log('用戶點(diǎn)擊取消')
                        }
                        }
                  })
                }
             })
        } else {
          console.log('已授權(quán)')
        }
    },
    fail(err)=>{}
})

// utils/auth.js

/**
 * @param {
 * authType: 授權(quán)類(lèi)型
 * }
 */

module.exports = async function wxAuth(authType) {
  // scopeArr ref: https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/authorize.html
  let scopeArr = [
    "userInfo",
    "userLocation",
    "userLocationBackground",
    "address",
    "invoiceTitle",
    "invoice",
    "werun",
    "record",
    "writePhotosAlbum",
    "camera",
  ];
  if (scopeArr.indexOf(authType) == -1) {
    return console.error("請(qǐng)輸入正確的授權(quán)類(lèi)型");
  }
  let scope = "scope." + authType;
  let isUserSet = await getSettingSync(scope);
  if (isUserSet) return true;
  let isAuthorize = await authorizeSync(scope);
  if (isAuthorize) return true;
  let showModalMes = await showModalSync(scope);
  // 彈框提示去授權(quán)
  if (showModalMes) {
    // 去手動(dòng)授權(quán)
    let openSet = await openSettingSync(scope);
    if (openSet) {
      return true;
    } else {
      return false;
    }
  } else {
    // 拒絕授權(quán)
    return false;
  }
};

// 判斷用戶是否開(kāi)啟該授權(quán)
function getSettingSync(scope) {
  return new Promise((resolve, reject) => {
    wx.getSetting({
      success(res) {
        if (!res.authSetting[scope]) {
          console.log("未授權(quán)");
          resolve(false);
        } else {
          console.log("已授權(quán)");
          resolve(true);
        }
      },
      fail(err) {
        reject();
        console.error("wx.getSetting Error", err);
      },
    });
  });
}
// 請(qǐng)求用戶授權(quán)
function authorizeSync(scope) {
  return new Promise((resolve, reject) => {
    wx.authorize({
      scope: scope,
      success() {
        resolve(true);
        console.log("授權(quán)成功");
      },
      fail() {
        resolve(false);
        console.log("授權(quán)失敗");
      },
    });
  });
}
// 彈框提示用戶手動(dòng)授權(quán)
function showModalSync(scope) {
  return new Promise((resolve, reject) => {
    wx.showModal({
      title: "提示",
      content: `為了更好的用戶體驗(yàn)，請(qǐng)您授權(quán) ${scope} 功能`,
      confirmText: "去授權(quán)",
      showCancel: false,
      success(res) {
        if (res.confirm) {
          console.log("點(diǎn)擊確認(rèn)");
          resolve(true);
        } else if (res.cancel) {
          resolve(false);
        }
      },
      fail(err) {
        reject();
        console.error(err, "wx.showModal Error");
      },
    });
  });
}
// 調(diào)起客戶端小程序設(shè)置界面，返回用戶設(shè)置的操作結(jié)果
function openSettingSync(scope) {
  return new Promise((resolve, reject) => {
    wx.openSetting({
      success(res) {
        console.log(res.authSetting);
        if (res.authSetting[scope]) {
          resolve(true);
        } else {
          resolve(false);
        }
      },
      fail(err) {
        reject();
        console.error(err, "wx.openSetting Error");
      },
    });
  });
}

import auth from './../../utils/auth'
Page({
   data:{
     isCameraAuth: false
   },
   onLoad(){
         // 授權(quán)代碼
    auth('camera').then(() => {
      console.log('授權(quán)成功')
      this.setData({
        isCameraAuth: true
      }
    }).catch((err) => {
      console.error('授權(quán)失敗');
    })
   }
})

<!-- index.wxml -->
<view>是否授權(quán)：{{isCameraAuth}}</view>
<camera wx:if="{{isCameraAuth}}" style="width: 100%; height: 300px;"></camera>