第三方登陆：微信官方登陆

// // 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application:handleOpenURL中调用。 * @param url 微信启动第3方利用时传递过来的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，不论是登录还是分享成功与否，都是走这个方法 @brief 发送1个sendReq后，收到微信的回应 * * 收到1个来自微信的处理结果。调用1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 = ⑴, 普通毛病类型 WXErrCodeUserCancel = ⑵, 用户点击取消并返回 WXErrCodeSentFail = ⑶, 发送失败 WXErrCodeAuthDeny = ⑷, 授权失败 WXErrCodeUnsupport = ⑸, 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:@"肯定", 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：利用管理中心/移动利用 获得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3方向微信终端发送1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，是不是去下载" preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { }]; UIAlertAction *otherAction = [UIAlertAction actionWithTitle:@"肯定" 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以后，注册的通知的方法 //微信 成功回调 -(void)loginSuccessByCode:(NSString *)code{ //第1步 得到code NSLog(@"code %@",code); //第2步 通过code获得access_token NSString * grantStr = @"grant_type=authorization_code"; //通过code获得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); //要求:获得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获得用户信息 -(void)requestUserInfoByToken:(NSString *)token andOpenid:(NSString *)openID{ //第3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"];//每一个用户所对应的每一个开放平台下的每一个利用是同1个唯1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