微信官方登陆
一、首先进入微信授权登陆之前的一个验证,在微信开放平台注册开发者账号,并拥有一个已经审核通过的移动应用,获得相应的AppID和AppSecrect,申请微信通过审核后(如下如)可开始植入工程的相关流程。
二、下载最新的SDK,链接如下:iOS SDK下载
下载下来的SDK如下图:
1、libWeChatSDK.a : 静态库,直接拖入工程中使用的;
2、README.txt : 重要内容,一些最新SDK版本的说明和安装配置
3、WechatAuthSDK.h :授权SDK
4、WXApi.h : 登陆方法所在类
5、WXApiObject.h : 所有接口和对象数据的定义类
iOS微信登陆注意事项:
1、目前移动应用上微信登录只提供原生的登录方式,需要用户安装微信客户端才能配合使用。
2、对于iOS应用,考虑到iOS应用商店审核指南中的相关规定,建议开发者接入微信登录时,先检测用户手机是否已安装微信客户端(使用sdk中isWXAppInstalled函数 ),对未安装的用户隐藏微信登录按钮,只提供其他登录方式(比如手机号注册登录、游客登录等)。【iOS9以上的系统需注意,要想使判断有效,需要进行白名单的适配】
iOS微信登陆大致流程:
1.
第三方发起微信授权登录请求,微信用户允许授权第三方应用后,微信会拉起应用或重定向到第三方网站,并且带上授权临时票据code参数;
2.
通过code参数加上AppID和AppSecret等,通过API换取access_token;
3.
通过access_token进行接口调用,获取用户基本数据资源或帮助用户实现基本操作。
接下来我们结合工程来集成一下:
第一步:新建工程,并添加依赖库
第二步:设置URL Schemes(iOS9以上适配),URL
Types,HTTPS设置 (如下图)
URL
Schemes和HTTPS网络协议的适配,仅需要在Info.plist中添加如下相关源码:
网络适配:
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
白名单适配:
<key>LSApplicationQueriesSchemes</key>
<array>
<string>weixin</string>
<string>wechat</string>
</array>
第三步:工程代码
// // AppDelegate.h // WeiXinLogin // // Created by 王园园 on 16/6/26. // Copyright © 2016年 Wangyuanyuan. All rights reserved. // #import <UIKit/UIKit.h> #import "WXApi.h" @protocol WXDelegate <NSObject> - (void)loginSuccessByCode:(NSString *)code; @end @interface AppDelegate : UIResponder <UIApplicationDelegate,WXApiDelegate> @property (strong, nonatomic) UIWindow *window; ///声明微信代理属性 @property (nonatomic,assign)id<WXDelegate>wxDelegate; @end
// // AppDelegate.m // WeiXinLogin // // Created by 王园园 on 16/6/26. // Copyright © 2016年 Wangyuanyuan. All rights reserved. // #import "AppDelegate.h" #define weixinLoginAppId @"" #define weixinLoginAppSecret @"" @interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. //向微信注册APPID [WXApi registerApp:weixinLoginAppId withDescription:@"wechat"]; return YES; } #pragma mark - 微信登陆 /*! @brief 处理微信通过URL启动App时传递的数据 * * 需要在 application:openURL:sourceApplication:annotation:或者application:handleOpenURL中调用。 * @param url 微信启动第三方应用时传递过来的URL * @param delegate WXApiDelegate对象,用来接收微信触发的消息。 * @return 成功返回YES,失败返回NO。 */ - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation { return [WXApi handleOpenURL:url delegate:self]; } /*! 微信回调,不管是登录还是分享成功与否,都是走这个方法 @brief 发送一个sendReq后,收到微信的回应 * * 收到一个来自微信的处理结果。调用一次sendReq后会收到onResp。 * 可能收到的处理结果有SendMessageToWXResp、SendAuthResp等。 * @param resp具体的回应内容,是自动释放的 */ -(void) onResp:(BaseResp*)resp { // [[NSNotificationCenter defaultCenter]postNotificationName:@"weixinNoticationAboutLogin" object:resp]; NSLog(@"resp %d",resp.errCode); /* enum WXErrCode { WXSuccess = 0, 成功 WXErrCodeCommon = -1, 普通错误类型 WXErrCodeUserCancel = -2, 用户点击取消并返回 WXErrCodeSentFail = -3, 发送失败 WXErrCodeAuthDeny = -4, 授权失败 WXErrCodeUnsupport = -5, 微信不支持 }; */ if ([resp isKindOfClass:[SendAuthResp class]]) { //授权登录的类。 if (resp.errCode == 0) { //成功。 //这里处理回调的方法 。 通过代理吧对应的登录消息传送过去。 if ([_wxDelegate respondsToSelector:@selector(loginSuccessByCode:)]) { SendAuthResp *resp2 = (SendAuthResp *)resp; [_wxDelegate loginSuccessByCode:resp2.code]; } }else{ //失败 NSLog(@"error %@",resp.errStr); UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"登录失败" message:[NSString stringWithFormat:@"reason : %@",resp.errStr] delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil]; [alert show]; } } } @end
// // ViewController.m // WeiXinLogin // // Created by 王园园 on 16/6/26. // Copyright © 2016年 Wangyuanyuan. All rights reserved. // #import "ViewController.h" #import "WXApi.h" #import "AppDelegate.h" #define weixinLoginAppId @"" #define weixinLoginAppSecret @"" @interface ViewController ()<WXDelegate> @property (nonatomic,strong)AppDelegate *appDelegate; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //在微信开发者平台:应用管理中心/移动应用 获取AppID UIButton *weiXinLoginBtn = [UIButton buttonWithType:UIButtonTypeCustom]; [weiXinLoginBtn setTitle:@"微信登陆" forState:UIControlStateNormal]; weiXinLoginBtn.backgroundColor = [UIColor cyanColor]; [weiXinLoginBtn addTarget:self action:@selector(weiXinLoginButtonAction) forControlEvents:UIControlEventTouchUpInside]; weiXinLoginBtn.frame = CGRectMake(100, 100, 100, 100); [self.view addSubview:weiXinLoginBtn]; } #pragma mark - 登陆按钮的响应方法 - (void)weiXinLoginButtonAction{ //解决isWXAppInstalled的值不准确,需要iOS9白名单适配:https://github.com/ChenYilong/iOS9AdaptationTips#常见-url-scheme if ([WXApi isWXAppInstalled]) { //构造SendAuthReq结构体 SendAuthReq* req =[[SendAuthReq alloc ] init] ; req.scope = @"snsapi_userinfo"; req.openID = weixinLoginAppId; req.state = @"1245"; _appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate; _appDelegate.wxDelegate = self; //第三方向微信终端发送一个SendAuthReq消息结构 [WXApi sendReq:req]; }else{ UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"您没有安装微信,是否去下载" preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { }]; UIAlertAction *otherAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { }]; // Add the actions. [alertController addAction:cancelAction]; [alertController addAction:otherAction]; [self presentViewController:alertController animated:YES completion:nil]; } } #pragma mark - 此方法是,当用户点击允许授权之后,注册的通知的方法 //微信 成功回调 -(void)loginSuccessByCode:(NSString *)code{ //第一步 得到code NSLog(@"code %@",code); //第二步 通过code获取access_token NSString * grantStr = @"grant_type=authorization_code"; //通过code获取access_token https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code NSString * tokenUrl = @"https://api.weixin.qq.com/sns/oauth2/access_token?"; NSString * tokenUrl1 = [tokenUrl stringByAppendingString:[NSString stringWithFormat:@"appid=%@&",weixinLoginAppId]]; NSString * tokenUrl2 = [tokenUrl1 stringByAppendingString:[NSString stringWithFormat:@"secret=%@&",weixinLoginAppSecret]]; NSString * tokenUrl3 = [tokenUrl2 stringByAppendingString:[NSString stringWithFormat:@"code=%@&",code]]; NSString * tokenUrlend = [tokenUrl3 stringByAppendingString:grantStr]; NSLog(@"%@",tokenUrlend); //请求:获取access_token 和 openid NSURL *url = [NSURL URLWithString:tokenUrlend]; NSURLRequest * request = [[NSURLRequest alloc]initWithURL:url]; __weak typeof(self)weakSelf = self; [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) { //转换为字典 NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; NSString * access_token = [dic objectForKey:@"access_token"]; //NSString * expires_in = [dic objectForKey:@"expires_in"]; //NSString * refresh_token = [dic objectForKey:@"refresh_token"]; NSString * openid = [dic objectForKey:@"openid"]; [weakSelf requestUserInfoByToken:access_token andOpenid:openid]; }]; } #pragma mark - 根据accessToken和openID获取用户信息 -(void)requestUserInfoByToken:(NSString *)token andOpenid:(NSString *)openID{ //第三步:通过access_token得到昵称、unionid等信息 NSString * userfulStr = [NSString stringWithFormat:@"https://api.weixin.qq.com/sns/userinfo?access_token=%@&openid=%@",token,openID]; NSURL * userfulUrl = [NSURL URLWithString:userfulStr]; NSURLRequest * userfulRequest = [[NSURLRequest alloc]initWithURL:userfulUrl]; [NSURLConnection sendAsynchronousRequest:userfulRequest queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) { //转换为字典 NSDictionary *userfulResultDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; NSString * weixinOpenid = [userfulResultDic objectForKey:@"openid"]; NSString * unionidStr = [userfulResultDic objectForKey:@"unionid"];//每个用户所对应的每个开放平台下的每个应用是同一个唯一标识 NSString * langue = [userfulResultDic objectForKey:@"language"]; NSString * nickStr = [userfulResultDic objectForKey:@"nickname"]; NSString * filePath = [userfulResultDic objectForKey:@"headimgurl"]; NSString * gender = [userfulResultDic objectForKey:@"sex"]; NSString *sex; if ([gender intValue] == 1) { sex = @"1"; }else if ([gender intValue] == 2){ sex = @"0"; } NSString * province = [userfulResultDic objectForKey:@"province"]; NSString * city = [userfulResultDic objectForKey:@"city"]; }]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end
大功告成,这就是简单的微信登陆!!!!