小程序黑马优购学习笔记【2】Promise封装openSetting等API

一、Utils/asyncWx.js

/**
 * promise 形式  getSetting
 */
export const getSetting = () => {
  return new Promise((resolve, reject) => {
    wx.getSetting({
      success: (result) => {
        resolve(result);
      },
      fail: (err) => {
        reject(err);
      }
    });
  })
}
/**
 * promise 形式  chooseAddress
 */
export const chooseAddress = () => {
  return new Promise((resolve, reject) => {
    wx.chooseAddress({
      success: (result) => {
        resolve(result);
      },
      fail: (err) => {
        reject(err);
      }
    });
  })
}

/**
 * promise 形式  openSetting
 */
export const openSetting = () => {
  return new Promise((resolve, reject) => {
    wx.openSetting({
      success: (result) => {
        resolve(result);
      },
      fail: (err) => {
        reject(err);
      }
    });
  })
}

/**
 *  promise 形式  showModal
 * @param {object} param0 参数
 */
export const showModal = ({
  content
}) => {
  return new Promise((resolve, reject) => {
    wx.showModal({
      title: '提示',
      content: content,
      success: (res) => {
        resolve(res);
      },
      fail: (err) => {
        reject(err);
      }
    })
  })
}


/**
 *  promise 形式  showToast
 * @param {object} param0 参数
 */
export const showToast = ({
  title
}) => {
  return new Promise((resolve, reject) => {
    wx.showToast({
      title: title,
      icon: 'none',
      success: (res) => {
        resolve(res);
      },
      fail: (err) => {
        reject(err);
      }
    })
  })
}

/**
 * promise 形式  login
 */
export const login = () => {
  return new Promise((resolve, reject) => {
    wx.login({
      timeout: 10000,
      success: (result) => {
        resolve(result);
      },
      fail: (err) => {
        reject(err);
      }
    });
  })
}

/**
 * promise 形式的 小程序的微信支付
 * @param {object} pay 支付所必要的参数
 */
export const requestPayment = (pay) => {
  return new Promise((resolve, reject) => {
    wx.requestPayment({
      ...pay,
      success: (result) => {
        resolve(result)
      },
      fail: (err) => {
        reject(err);
      }
    });

  })
}

二、使用

1.业务逻辑

获取用户对小程序所授予获取地址的权限、状态 scope

1)假设用户点击获取收货地址的提示框

确定 authSetting scope.address:
scope 值 true 直接调用 获取收货地址

2)假设用户从来没有调用过收货地址的api

scope undefined 直接调用 获取收货地址

3)假设用户点击获取收货地址的提示框 取消

scope 值 false

• 诱导用户 自己 打开 授权设置页面(wx.openSetting) 当用户重新给与 获取地址权限的时候
• 获取收货地址

4)把获取到的收货地址存入到本地存储中

2.引入

import { getSetting, chooseAddress, openSetting, showModal ,showToast} from "../../utils/asyncWx.js";

3.具体代码

// 点击 收货地址
  async handleChooseAddress() {
    try {
      // 1 获取 权限状态
      const res1 = await getSetting();
      const scopeAddress = res1.authSetting["scope.address"];
      // 2 判断 权限状态
      if (scopeAddress === false) {
        await openSetting();
      }
      // 4 调用获取收货地址的 api
      let address = await chooseAddress();
      address.all = address.provinceName + address.cityName + address.countyName + address.detailInfo;

      // 5 存入到缓存中
      wx.setStorageSync("address", address);

    } catch (error) {
      console.log(error);
    }
  },