第三方登录（微信、QQ）

2019-07-11 本文已影响0人何大叔

一、微信

项目集成微信SDK(添加依赖库) 参考微信开放平台

添加URL Type

屏幕快照 2019-07-11 下午4.54.54.png

3.添加白名单 LSApplicationQueriesSchemes

屏幕快照 2019-07-11 下午4.56.48.png

前期准备工作都做好,之后进行代码阶段

4.在 AppDelegate 的 didFinishLaunchingWithOptions 函数中向微信注册id

import "WXApi.h"

<WXApiDelegate>
//微信注册
[WXApi registerApp:WXAPPid];

重写AppDelegate的handleOpenURL和openURL方法

iOS 9 之前用
-(BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url{
return [WXApi handleOpenURL:url delegate:self];
}
-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation{
return [WXApi handleOpenURL:url delegate:self];
}

iOS 9之后

(BOOL)application:(UIApplication *)app openURL:(NSURL )url options:(NSDictionary<NSString, id> *)options
{
if [url.host isEqualToString:@"oauth"]){//微信登录
return [WXApi handleOpenURL:url delegate:self];
}
return YES;
//if ([url.host isEqualToString:@"safepay"]) {}//支付宝用这个
}

6.点击微信按钮处,编写代码

(void)sendWXAuthReq{//复制即可

if([WXApi isWXAppInstalled]){//判断用户是否已安装微信App
    
    SendAuthReq *req = [[SendAuthReq alloc] init];
    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
    req.scope = @"snsapi_userinfo";//授权作用域：获取用户个人信息
    //唤起微信
    [WXApi sendReq:req];
}else{
    [self showAlertControllerWithTitle:@"温馨提示" withMessage:@"未安装微信应用或版本过低"];
     }

}

用户点击授权后，微信客户端会被拉起，跳转至授权界面，用户在该界面点击允许或取消，SDK通过SendAuth的Resp返回数据给调用方

我在AppDelegate中写微信回调代理获取OpenId

//微信回调代理

(void)onResp:(BaseResp *)resp{

// =============== 获得的微信登录授权回调 ============
if ([resp isMemberOfClass:[SendAuthResp class]]) {

    SendAuthResp *aresp = (SendAuthResp *)resp;
    if (aresp.errCode != 0 ) {
        dispatch_async(dispatch_get_main_queue(), ^{
            [self showError:@"微信授权失败"];
        });
        return;
    }
    //授权成功获取 OpenId
    NSString *code = aresp.code;
    [self getWeiXinOpenId:code];
}
// =============== 获得的微信支付回调 ============
if([resp isKindOfClass:[PayResp class]]){
    //支付返回结果，实际支付结果需要去微信服务器端查询
}

}

通过code获取access_token，openid，unionid
//通过code获取access_token，openid，unionid

/*
 appid    是    应用唯一标识，在微信开放平台提交应用审核通过后获得
 secret    是    应用密钥AppSecret，在微信开放平台提交应用审核通过后获得
 code    是    填写第一步获取的code参数
 grant_type    是    填authorization_code
 */

(void)getWeiXinOpenId:(NSString *)code{

NSString *url =[NSString stringWithFormat:@"https://api.weixin.qq.com/sns/oauth2/access_token?appid=%@&secret=%@&code=%@&grant_type=authorization_code",WXAPPid,WXAppSecret,code];

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSURL *zoneUrl = [NSURL URLWithString:url];
NSString *zoneStr = [NSString stringWithContentsOfURL:zoneUrl encoding:NSUTF8StringEncoding error:nil];

  NSData *data1 = [zoneStr dataUsingEncoding:NSUTF8StringEncoding];
  
  if (!data1) {
      [self showError:@"微信授权失败"];
      return ;
  }
  
  // 授权成功，获取token、openID字典
  NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data1 options:NSJSONReadingMutableContainers error:nil];
  NSLog(@"token、openID字典===%@",dic);
  NSString *access_token = dic[@"access_token"];
  NSString *openid= dic[@"openid"];
  
  //         获取微信用户信息
  [self getUserInfoWithAccessToken:access_token WithOpenid:openid];

});
}

9.-(void)getUserInfoWithAccessToken:(NSString *)access_token WithOpenid:(NSString *)openid
{
NSString *url =[NSString stringWithFormat:@"https://api.weixin.qq.com/sns/userinfo?access_token=%@&openid=%@",access_token,openid];

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    NSURL *zoneUrl = [NSURL URLWithString:url];
    NSString *zoneStr = [NSString stringWithContentsOfURL:zoneUrl encoding:NSUTF8StringEncoding error:nil];
    NSData *data = [zoneStr dataUsingEncoding:NSUTF8StringEncoding];
    dispatch_async(dispatch_get_main_queue(), ^{
        
        // 获取用户信息失败
        if (!data) {
            [self showError:@"微信授权失败"];
            return ;
        }
        
        // 获取用户信息字典
        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
        //用户信息中没有access_token 我将其添加在字典中
        [dic setValue:access_token forKey:@"token"];
        NSLog(@"用户信息字典:===%@",dic);
        //保存改用户信息(我用单例保存)
        [GLUserManager shareManager].weiXinIfon = dic;
      //微信返回信息后,会跳到登录页面,添加通知进行其他逻辑操作
        [[NSNotificationCenter defaultCenter] postNotificationName:@"weiChatOK" object:nil];
        
    });
    
});

}

二、QQ登录
前期工作同上直接上代码

在点击登录页面

import <TencentOpenAPI/QQApiInterface.h>

import <TencentOpenAPI/TencentOAuth.h>

实现代理<TencentSessionDelegate>

(void)QQAuthEvent:(UIBarButtonItem *)item{

self.tencentOAuth = [[TencentOAuth alloc]initWithAppId:@"1105668427" andDelegate:self];

NSMutableArray *permission = [NSMutableArray arrayWithObjects:@"get_user_info",@"get_simple_userinfo",nil];

[self.tencentOAuth authorize:permission inSafari:NO];
}

实现代理回调

(void)tencentDidLogin{

 if (self.tencentOAuth.accessToken){
   
    NSLog(@"%@ == %@",self.tencentOAuth.accessToken,self.tencentOAuth.openId);
    
    [self.tencentOAuth getUserInfo];
    
}else{
    NSLog(@"登录失败！没有获取到accessToken");

}}

/** * 登录失败后的回调 */

(void)tencentDidNotLogin:(BOOL)cancelled{
if (cancelled) {
NSLog(@"用户取消登录");
}else{
NSLog(@"登录失败");
}}

/** * 登录时网络有问题的回调 */

(void)tencentDidNotNetWork{
NSLog(@"没有网络，无法登录");
}

/** * 取得用户信息的回调 */

(void)getUserInfoResponse:(APIResponse *)response{
NSLog(@"%@",response.jsonResponse);
}

第三方登录（微信、QQ）

import "WXApi.h"

import <TencentOpenAPI/QQApiInterface.h>

import <TencentOpenAPI/TencentOAuth.h>

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