这里用到了原生网络请求,需要去微信开发者中心获取需要的两个值WeChatAppID WeChatSecret
AppDelegate.m
-(BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary *)options
{
/*! @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。
*/
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
{
JMLog(@"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 ([_sxwWeChatDelegate respondsToSelector:@selector(loginSuccessByCode:)])
{
SendAuthResp *resp2 = (SendAuthResp *)resp;
[_sxwWeChatDelegate loginSuccessByCode:resp2.code];
}
}
else if (resp.errCode == -2)
{ //失败
[HWAlertShowMessage showAlertViewController:[self getCurrentVC] title:@"登录失败" message:@"用户点击取消并返回" cancelButtonTitle:@"取消" sureButtonTitle:@"确定" sure:^{
} cancle:^{
}];
}
else if (resp.errCode == -1)
{
[HWAlertShowMessage showAlertViewController:[self getCurrentVC] title:@"登录失败" message:@"普通错误类型" cancelButtonTitle:@"取消" sureButtonTitle:@"确定" sure:^{
} cancle:^{
}];
}
else if (resp.errCode == -3)
{
[HWAlertShowMessage showAlertViewController:[self getCurrentVC] title:@"登录失败" message:@"发送失败" cancelButtonTitle:@"取消" sureButtonTitle:@"确定" sure:^{
} cancle:^{
}];
}
else if (resp.errCode == -4)
{
[HWAlertShowMessage showAlertViewController:[self getCurrentVC] title:@"登录失败" message:@"授权失败" cancelButtonTitle:@"取消" sureButtonTitle:@"确定" sure:^{
} cancle:^{
}];
}
else if (resp.errCode == -5)
{
[HWAlertShowMessage showAlertViewController:[self getCurrentVC] title:@"登录失败" message:@"微信不支持" cancelButtonTitle:@"取消" sureButtonTitle:@"确定" sure:^{
} cancle:^{
}];
}
}
if ([resp isKindOfClass:[SendMessageToWXResp class]])
{ //微信分享 微信回应给第三方应用程序的类
SendMessageToWXResp *response = (SendMessageToWXResp *)resp;
JMLog(@"error code %d error msg %@ lang %@ country %@",response.errCode,response.errStr,response.lang,response.country);
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 (_sxwWeChatDelegate)
{
if([_sxwWeChatDelegate respondsToSelector:@selector(shareSuccessByCode:)])
{
[_sxwWeChatDelegate shareSuccessByCode:response.errCode];
}
}
}
else
{ //失败
JMLog(@"error %@",resp.errStr);
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"分享失败" message:[NSString stringWithFormat:@"reason : %@",resp.errStr] delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
[alert show];
}
}
/*
0 展示成功页面
-1 可能的原因:签名错误、未注册APPID、项目设置APPID不正确、注册的APPID与设置的不匹配、其他异常等。
-2 用户取消 无需处理。发生场景:用户不支付了,点击取消,返回APP。
*/
if ([resp isKindOfClass:[PayResp class]])
{ // 微信支付
PayResp*response=(PayResp*)resp;
switch(response.errCode)
{
case 0:
//服务器端查询支付通知或查询API返回的结果再提示成功
NSLog(@"支付成功");
break;
default:
NSLog(@"支付失败,retcode=%d errormsg %@",resp.errCode ,resp.errStr);
break;
}
}
}
AppDelegate.h
//设置代理
#import
@protocol SXWWeChatDelegate
-(void)loginSuccessByCode:(NSString *)code;
-(void)shareSuccessByCode:(int) code;
@end
@interface AppDelegate : UIResponder
@property (strong, nonatomic) UIWindow *window;
@property (nonatomic,assign)NSInteger allowRotate;
@property (nonatomic, weak) id sxwWeChatDelegate;
@end
//在需要用到的地方去实现代理
#import "LoginViewController.h"
#import "AppDelegate.h"
@interface LoginViewController ()
//微信登录按钮的点击事件
//微信号快捷登录
-(void)sendAuthRequest
{
if (![WXApi isWXAppInstalled] || ![WXApi isWXAppSupportApi])
{
[self setupAlertController];
}
else
{
//构造SendAuthReq结构体
SendAuthReq* req =[[SendAuthReq alloc]init];
//scope - 必须,应用授权作用域,如获取用户个人信息则填写snsapi_userinfo
req.scope = @"snsapi_userinfo";
//state - 非必须,用于保持请求和回调的状态,授权请求后原样带回给第三方。该参数可用于防止csrf攻击(跨站请求伪造攻击),建议第三方带上该参数,可设置为简单的随机数加session进行校验
req.state = @"authorization_code";
//appid - 必须,应用唯一标识,在微信开放平台提交应用审核通过后获得
req.openID = WeChatAppID;
self.delegate = [UIApplication sharedApplication].delegate;
self.delegate.sxwWeChatDelegate = self;
//第三方向微信终端发送一个SendAuthReq消息结构
[WXApi sendReq:req];
}
}
#pragma mark - 设置弹出提示语
- (void)setupAlertController {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"请先安装微信客户端" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *actionConfirm = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
[alert addAction:actionConfirm];
[self presentViewController:alert animated:YES completion:nil];
}
#pragma mark 微信登录回调。
-(void)loginSuccessByCode:(NSString *)code
{
JMLog(@"code==== %@",code);
__weak typeof(*&self) weakSelf = self;
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];//请求
manager.responseSerializer = [AFHTTPResponseSerializer serializer];//响应
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"application/json", @"text/json",@"text/plain", nil];
//通过 appid secret 认证code . 来发送获取 access_token的请求
[manager GET:[NSString stringWithFormat:@"https://api.weixin.qq.com/sns/oauth2/access_token?appid=%@&secret=%@&code=%@&grant_type=authorization_code",WeChatAppID,WeChatSecret,code] parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) { //获得access_token,然后根据access_token获取用户信息请求。
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];
JMLog(@"dic==== %@",dic);
/*
access_token 接口调用凭证
expires_in access_token接口调用凭证超时时间,单位(秒)
refresh_token 用户刷新access_token
openid 授权用户唯一标识
scope 用户授权的作用域,使用逗号(,)分隔
unionid 当且仅当该移动应用已获得该用户的userinfo授权时,才会出现该字段
*/
NSString* accessToken=[dic valueForKey:@"access_token"];
NSString* openID=[dic valueForKey:@"openid"];
[weakSelf requestUserInfoByToken:accessToken andOpenid:openID];
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
JMLog(@"error %@",error.localizedFailureReason);
}];
}
-(void)requestUserInfoByToken:(NSString *)token andOpenid:(NSString *)openID
{
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager GET:[NSString stringWithFormat:@"https://api.weixin.qq.com/sns/userinfo?access_token=%@&openid=%@",token,openID] parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject)
{
NSDictionary *dic = (NSDictionary *)[NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];
//开发人员拿到相关微信用户信息后, 需要与后台对接,进行登录
JMLog(@"login success dic ==== %@",dic);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error)
{
JMLog(@"error %ld",(long)error.code);
}];
}
白名单的设置,和ID的设置在 Info.plist文件里面
CFBundleURLTypes
CFBundleTypeRole
Editor
CFBundleURLName
weixin
CFBundleURLSchemes
《这里写注册的微信APPID》
LSApplicationQueriesSchemes
wechat
weixin