一.微信实现三方登录
前面一些基本的配置我这里就不赘述了，不太明白的可以去看我的关于微信分享的那篇文章，里面有比较详细的撸代码之前的前期准备工作。
1.向微信注册
// WXAPPID:在微信开放平台注册应用时分配的AppID
[WXApi registerApp:WXAPPID];
2.处理open url
- (BOOL)application:(UIApplication *)application openURL:(nonnull NSURL *)url options:(nonnull NSDictionary<NSString *,id> *)options {
// 设置了代理为Appdelegate
return [WXApi handleOpenURL:url delegate:self];
}
3.微信登录
- (void)weixinLoginButtonClick {
// 先判断是否安装微信客户端
if ([WXApi isWXAppInstalled]) {
SendAuthReq *req = [[SendAuthReq alloc] init];
req.scope = @"snsapi_userinfo";
req.state = @"App";
[WXApi sendReq:req];
}
else {
[self showAlertWithTitle:@"提示" message:@"请先下载微信客户端"];
}
}
微信登录.png
微信授权.png
4.微信相关的回调
上面的方法执行过后就会执行如下的回调方法
- (void)onReq:(BaseReq *)req
{
JRLog(@"调用sendResp方法后，收到来自微信的请求，发送相应的结果给微信");
}
- (void)onResp:(BaseResp *)resp
{
if([resp isKindOfClass:[SendMessageToWXResp class]]) {
NSLog(@"微信分享相关的回调");
}else if ([resp isKindOfClass:[SendAuthResp class]]) {
SendAuthResp *temp = (SendAuthResp*)resp;
if (temp.errCode == WXSuccess) {
// 微信授权成功
[self getAuthorityWithCode:temp.code];
}
}
}
#pragma mark --
/**
WXAPPID:在微信平台注册时的AppID
APPSECRET:在微信平台注册应用时获取
*/
- (void)getAuthorityWithCode:(NSString *)code {
NSString *URL = [NSString stringWithFormat:@"https://api.weixin.qq.com/sns/oauth2/access_token?appid=%@&secret=%@&code=%@&grant_type=authorization_code",WXAPPID,APPSECRET,code];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSURL *baseURL = [NSURL URLWithString:URL];
NSString *rightURL = [NSString stringWithContentsOfURL:baseURL encoding:NSUTF8StringEncoding error:nil];
NSData *data = [rightURL dataUsingEncoding:NSUTF8StringEncoding];
if (data) {
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
NSString *access_token = [dic objectForSafeKey:@"access_token"];
NSString *openid = [dic objectForSafeKey:@"openid"];
[self wechatLoginByRequestForUserInfoWithAccess:access_token openID:openid];
}
});
}
/** 获取微信用户信息*/
- (void)wechatLoginByRequestForUserInfoWithAccess:(NSString *)access_token openID:(NSString *)openid {
// 获取用户信息
NSString *URL = [NSString stringWithFormat:@"https://api.weixin.qq.com/sns/userinfo?access_token=%@&openid=%@",access_token,openid];
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager GET:URL parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
if (dict != nil) {
NSLog(@"dict里面即是获取到得微信的相关信息(头像 昵称等)");
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
}];
}
二.QQ实现三方登录
- (void)qqLoginButtonClick {
if (![TencentOAuth iphoneQQInstalled]) {
[self showAlertWithTitle:@"提示" message:@"请先下载QQ客户端"];
}else {
self.tencentOAuth = [[TencentOAuth alloc] initWithAppId:QQAPPID
andDelegate:self];
NSArray *permissions= [NSArray arrayWithObjects:@"get_user_info",@"get_simple_userinfo",@"add_t",nil];
[self.tencentOAuth authorize:permissions inSafari:NO];
}
}
QQ登录授权.png
#pragma mark -- TencentLoginDelegate
/**
* 登录成功后的回调
*/
- (void)tencentDidLogin {
NSLog(@"QQ登录成功 - %@",self.tencentOAuth.openId);
}
/**
* 登录失败后的回调
* \param cancelled 代表用户是否主动退出登录
*/
- (void)tencentDidNotLogin:(BOOL)cancelled {
if (!cancelled) {
[self showAlertWithTitle:@"提示" message:@"QQ登录失败"];
}
}
/**
* 登录时网络有问题的回调
*/
- (void)tencentDidNotNetWork {
[self showAlertWithTitle:@"提示" message:@"登录时网络出现错误"];
}
/**
* 退出登录的回调
*/
- (void)tencentDidLogout {
NSLog(@"退出登录");
}
三.新浪微博实现三方登录
1.新浪微博按钮点击
- (void)weiboLoginButtonClick {
if (![WeiboSDK isWeiboAppInstalled]) {
[self showAlertWithTitle:@"提示" message:@"请先安装新浪微博客户端"];
}else {
// 授权页面(授权页面是微博提供的 我们只需要用网页来加载它即可)
JROAuthorViewController *oauthVc = [[JROAuthorViewController alloc] init];
[self.navigationController pushViewController:oauthVc animated:YES];
}
}
2.授权页面的实现
新浪微博1.png
- (void)viewDidLoad
{
[super viewDidLoad];
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 64, [UIDevice screenWidth], [UIDevice screenHeight])];
webView.delegate = self;
[self.view addSubview:webView];
self.navigationTitleLabel.text = @"新浪微博授权";
// 2.用webView加载授权页面
NSString *urlStr = [NSString stringWithFormat:@"https://api.weibo.com/oauth2/authorize?client_id=%@&redirect_uri=%@",WBAPPID,@"http://sns.whalecloud.com/sina2/callback"];
NSURL *url = [NSURL URLWithString:urlStr];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webView loadRequest:request];
}
#pragma mark - UIWebViewDelegate
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSString *url = request.URL.absoluteString;
// 1.是否为回调地址
NSRange range = [url rangeOfString:@"code="];
if (range.length != 0) {
// 2.截取code=后面的参数值
NSInteger fromIndex = range.location + range.length;
NSString *code = [url substringFromIndex:fromIndex];
// 3.利用code换取一个accessToken
[self accessTokenWithCode:code];
}
return YES;
}
新浪微博2.png
/**
* 利用授权成功后的request token换取一个accessToken
*/
- (void)accessTokenWithCode:(NSString *)code {
// 1.请求管理者
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
// 2.拼接请求参数
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[@"client_id"] = WBAPPID;
params[@"client_secret"] = WBSECRT;
params[@"grant_type"] = @"authorization_code";
params[@"redirect_uri"] = @"http://sns.whalecloud.com/sina2/callback";
params[@"code"] = code;
// 3.发送请求
[manager POST:@"https://api.weibo.com/oauth2/access_token" parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
if (dict != nil) {
NSLog(@"获取access_token成功");
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
}];
}
新浪微博3.png
总结
以上只是三方登录的简单应用，具体的应用还是各自平台的文档相当全面。
