text: //
  //  WechatAuthSDK.h
  //  WechatAuthSDK
  //
  //  Created by 李凯 on 13-11-29.
  //  Copyright (c) 2013年 Tencent. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  #import <UIKit/UIKit.h>
  
  enum  AuthErrCode {
      WechatAuth_Err_Ok = 0,  //Auth成功
      WechatAuth_Err_NormalErr = -1,  //普通错误
      WechatAuth_Err_NetworkErr = -2, //网络错误
      WechatAuth_Err_GetQrcodeFailed = -3,    //获取二维码失败
      WechatAuth_Err_Cancel = -4,     //用户取消授权
      WechatAuth_Err_Timeout = -5,    //超时
  };
  
  @protocol WechatAuthAPIDelegate<NSObject>
  @optional
  
  - (void)onAuthGotQrcode:(UIImage *)image;  //得到二维码
  - (void)onQrcodeScanned;    //二维码被扫描
  - (void)onAuthFinish:(int)errCode AuthCode:(NSString *)authCode;    //成功登录
  
  @end
  
  @interface WechatAuthSDK : NSObject{
      NSString *_sdkVersion;
      __weak id<WechatAuthAPIDelegate> _delegate;
  }
  
  @property(nonatomic, weak) id<WechatAuthAPIDelegate> delegate;
  @property(nonatomic, readonly) NSString *sdkVersion;   //authSDK版本号
  
  /*! @brief 发送登录请求，等待WechatAuthAPIDelegate回调
   *
   * @param appId 微信开发者ID
   * @param nonceStr 一个随机的尽量不重复的字符串，用来使得每次的signature不同
   * @param timeStamp 时间戳
   * @param scope 应用授权作用域，拥有多个作用域用逗号（,）分隔
   * @param signature 签名
   * @param schemeData 会在扫码后拼在scheme后
   * @return 成功返回YES，失败返回NO
      注:该实现只保证同时只有一个Auth在运行，Auth未完成或未Stop再次调用Auth接口时会返回NO。
   */
  
  - (BOOL)Auth:(NSString *)appId
      nonceStr:(NSString *)nonceStr
     timeStamp:(NSString*)timeStamp
         scope:(NSString *)scope
     signature:(NSString *)signature
    schemeData:(NSString *)schemeData;
  
  
  /*! @brief 暂停登录请求
   *
   * @return 成功返回YES，失败返回NO。
   */
  - (BOOL)StopAuth;
  
  @end
  