准备工作：（PS：Xcode = Version 11.3 (11C29)）
1.创建项目
2.cd 项目路径
3.pod init
4.vim Podfile
5.按 “i” 键，添加 pod 'WechatOpenSDK'； 然后“Esc”键，“:wq”保存。
6.pod install
CocoaPod添加微信SDK.png
7.新建桥接文件，引入 #import "WXApi.h"
图片.png
8.Build Setting -> 搜索 “bridging” 找到 Objective-C Bridging Header 设置引用路径:$(SRCROOT)/$(PROJECT_NAME)/WX_Bridging-Header.h
9.添加白名单
<key>LSApplicationQueriesSchemes</key>
<array>
<string>wechat</string>
<string>weixin</string>
<string>weixinULAPI</string>
</array>
10.添加URL Schemes 回调
图片.png
正式接入微信授权登录
1.继承代理：WXApiDelegate(必须)、WXApiLogDelegate(可选)
2.新增block，用于回到微信授权登录成功获取的code，后续利用该code获取微信用户信息。
3.实现代理方法：onReq、onResp、onLog(可选)
4.初始化微信SDK
//
// SceneDelegate.swift
// WeChatLoginDemo
//
// Created by 郭明健 on 2019/12/31.
// Copyright © 2019 郭明健. All rights reserved.
//
import UIKit
class SceneDelegate: UIResponder, UIWindowSceneDelegate, WXApiDelegate, WXApiLogDelegate {
var window: UIWindow?
//
var wechatLoginCallback : ((_ code: String)->())?
@available(iOS 13.0, *)
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
// 初始化微信SDK
registerWeChat()
guard let _ = (scene as? UIWindowScene) else { return }
}
@available(iOS 13.0, *)
func sceneDidDisconnect(_ scene: UIScene) {
}
@available(iOS 13.0, *)
func sceneDidBecomeActive(_ scene: UIScene) {
}
@available(iOS 13.0, *)
func sceneWillResignActive(_ scene: UIScene) {
}
@available(iOS 13.0, *)
func sceneWillEnterForeground(_ scene: UIScene) {
}
@available(iOS 13.0, *)
func sceneDidEnterBackground(_ scene: UIScene) {
}
//MARK:-
/// 初始化微信SDK
func registerWeChat() {
WXApi.startLog(by: .detail, logDelegate: self)
WXApi.registerApp(WX_AppID, universalLink: WX_UNIVERSAL_LINK)
}
//MARK:- WXApiDelegate
func onReq(_ req: BaseReq) {
print("====>onReq")
}
func onResp(_ resp: BaseResp) {
print("====>onResp")
if resp.isKind(of: SendAuthResp.self) {
let _resp = resp as! SendAuthResp
if let code = _resp.code {
//
if wechatLoginCallback != nil {
wechatLoginCallback!(code)
}
}
} else {
print(resp.errStr)
}
}
//MARK:- WXApiLogDelegate
func onLog(_ log: String, logLevel level: WXLogLevel) {
print(log)
}
}
5.创建个工具类，用于调用微信用户信息。
//
// WeChatFunc.swift
// WeChatLoginDemo
//
// Created by 郭明健 on 2020/1/2.
// Copyright © 2020 郭明健. All rights reserved.
//
import UIKit
class WeChatFunc: NSObject {
//MARK:- 微信授权登录
/// 发送Auth请求到微信，支持用户没安装微信，等待微信返回onResp
/// - Parameters:
/// - wxApiDelegate: WXApiDelegate对象，用来接收微信触发的消息。
/// - currentVC: viewController 当前界面对象。
static func sendWeChatLogin(wxApiDelegate: WXApiDelegate, currentVC: UIViewController) {
//构造SendAuthReq结构体
let req = SendAuthReq()
req.openID = WX_AppID
req.scope = "snsapi_userinfo"
req.state = "wx_oauth_authorization_state"// 用于保持请求和回调的状态，授权请求或原样带回。
//第三方向微信终端发送一个SendAuthReq消息结构
WXApi.sendAuthReq(req, viewController: currentVC, delegate: wxApiDelegate, completion: nil)
}
/// 微信：获取用户个人信息（UnionID 机制）
static func getWeChatUserInfo(code: String, success: @escaping (_ userInfo: [String : Any]) -> ()) {
self.getWeChatAccessToken(code: code) { (result, access_token, openid) in
self.getWeChatUserInfo(access_token: access_token, openID: openid) { (userInfoJson) in
success(userInfoJson)
}
}
}
/// 微信：通过 code 获取 access_token、openid
static func getWeChatAccessToken(code: String, success: @escaping (_ result: [String : Any], _ access_token: String, _ openid: String) -> ()) {
let urlString = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=\(WX_AppID)&secret=\(WX_AppSecret)&code=\(code)&grant_type=authorization_code"
var request = URLRequest(url: URL(string: urlString)!)
request.httpMethod = "GET"
UIApplication.shared.isNetworkActivityIndicatorVisible = true
URLSession.shared.dataTask(with: request) { data, response, error in
DispatchQueue.main.async(execute: {
UIApplication.shared.isNetworkActivityIndicatorVisible = false
if error == nil && data != nil {
do {
let dic = try JSONSerialization.jsonObject(with: data!, options: []) as! [String: Any]
let access_token = dic["access_token"] as! String
let openID = dic["openid"] as! String
//
success(dic, access_token, openID)
} catch {
print(#function)
}
return
}
})
}.resume()
}
/// 微信：获取用户个人信息（UnionID 机制）
static func getWeChatUserInfo(access_token: String, openID: String, success: @escaping (_ userInfo: [String : Any]) -> ()) {
let urlString = "https://api.weixin.qq.com/sns/userinfo?access_token=\(access_token)&openid=\(openID)"
var request = URLRequest(url: URL(string: urlString)!)
request.httpMethod = "GET"
UIApplication.shared.isNetworkActivityIndicatorVisible = true
URLSession.shared.dataTask(with: request) { data, response, error in
DispatchQueue.main.async(execute: {
UIApplication.shared.isNetworkActivityIndicatorVisible = false
if error == nil && data != nil {
do {
let dic = try JSONSerialization.jsonObject(with: data!, options: []) as! [String: Any]
//dic当中包含了微信登录的个人信息，用于用户创建、登录、绑定等使用
success(dic)
} catch {
print(#function)
}
return
}
})
}.resume()
}
}
6.点击微信授权按钮，获取微信用户信息
// 微信授权登录
@IBAction func loginAction(_ sender: Any) {
// 1.判断手机是否安装微信应用
let isInstallWeChat = WXApi.isWXAppInstalled()
if isInstallWeChat {
if let appdelegate = UIApplication.shared.delegate as? AppDelegate {
// 拉起微信授权登录
WeChatFunc.sendWeChatLogin(wxApiDelegate: appdelegate, currentVC: self)
// code回调
appdelegate.wechatLoginCallback = { (code) in
// 获取微信用户信息
WeChatFunc.getWeChatUserInfo(code: code) { (userInfoJson) in
var info = ""
for key in userInfoJson.keys {
let value = userInfoJson[key]
info.append("\(key) : \(value ?? "")\n")
}
print("===========>微信返回个人信息：\n\(info)\n===========")
}
}
}
} else {
print("未安装微信APP！")
}
}
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