-canOpenURL: failed for URL: "weixin://app/wx9**********dfd30/" - error: "This app is not allowed to query for scheme weixin"

**App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.**

#import "AppDelegate.h"
#import "LoginViewController.h"
#import "WXApi.h"

#pragma mark - application delegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

[WXApi registerApp:@"wxd1931d4a0e46****" withDescription:@"Wechat"];
return YES;
}
// 这个方法是用于从微信返回第三方App
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {

[WXApi handleOpenURL:url delegate:self];
return YES;
}

#import "LoginViewController.h"
#import "RegisterViewController.h"
#import "MBProgressHUD.h"
#import "AFNetworking.h"
#import "WXApi.h"

#pragma mark - 微信登录
/*
 目前移动应用上德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。
 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经安装
 微信客户端(使用sdk中的isWXAppInstall函数),对于未安装的用户隐藏微信 登录按钮，只提供其他登录方式。
 */
- (IBAction)wechatLoginClick:(id)sender {

if ([WXApi isWXAppInstalled]) {
  SendAuthReq *req = [[SendAuthReq alloc] init];
  req.scope = @"snsapi_userinfo";
  req.state = @"App";
  [WXApi sendReq:req];
 }
 else {
  [self setupAlertController];
 }
}

#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];
}

// LoginViewController.h
#import <UIKit/UIKit.h>
@interface LoginViewController : BaseViewController
/** 通过block去执行AppDelegate中的wechatLoginByRequestForUserInfo方法 */
@property (copy, nonatomic) void (^requestForUserInfoBlock)();
@end

// LoginViewController.m
#pragma mark - 微信登录
/*
 目前移动应用上德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。
 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经安装
 微信客户端(使用sdk中的isWXAppInstall函数),对于未安装的用户隐藏微信 登录按钮，只提供其他登录方式。
 */
- (IBAction)wechatLoginClick:(id)sender {
 NSString *accessToken = [[NSUserDefaults standardUserDefaults] objectForKey:WX_ACCESS_TOKEN];
 NSString *openID = [[NSUserDefaults standardUserDefaults] objectForKey:WX_OPEN_ID];
 // 如果已经请求过微信授权登录，那么考虑用已经得到的access_token
 if (accessToken && openID) {
  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
  NSString *refreshToken = [[NSUserDefaults standardUserDefaults] objectForKey:WX_REFRESH_TOKEN];
  NSString *refreshUrlStr = [NSString stringWithFormat:@"%@/oauth2/refresh_token?appid=%@&grant_type=refresh_token&refresh_token=%@", WX_BASE_URL, WXPatient_App_ID, refreshToken];
  [manager GET:refreshUrlStr parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
   NSLog(@"请求reAccess的response = %@", responseObject);
   NSDictionary *refreshDict = [NSDictionary dictionaryWithDictionary:responseObject];
   NSString *reAccessToken = [refreshDict objectForKey:WX_ACCESS_TOKEN];
   // 如果reAccessToken为空,说明reAccessToken也过期了,反之则没有过期
   if (reAccessToken) {
    // 更新access_token、refresh_token、open_id
    [[NSUserDefaults standardUserDefaults] setObject:reAccessToken forKey:WX_ACCESS_TOKEN];
    [[NSUserDefaults standardUserDefaults] setObject:[refreshDict objectForKey:WX_OPEN_ID] forKey:WX_OPEN_ID];
    [[NSUserDefaults standardUserDefaults] setObject:[refreshDict objectForKey:WX_REFRESH_TOKEN] forKey:WX_REFRESH_TOKEN];
    [[NSUserDefaults standardUserDefaults] synchronize];
    // 当存在reAccessToken不为空时直接执行AppDelegate中的wechatLoginByRequestForUserInfo方法
    !self.requestForUserInfoBlock ? : self.requestForUserInfoBlock();
   }
   else {
    [self wechatLogin];
   }
  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
   NSLog(@"用refresh_token来更新accessToken时出错 = %@", error);
  }];
 }
 else {
  [self wechatLogin];
 }
}
- (void)wechatLogin {
 if ([WXApi isWXAppInstalled]) {
  SendAuthReq *req = [[SendAuthReq alloc] init];
  req.scope = @"snsapi_userinfo";
  req.state = @"GSTDoctorApp";
  [WXApi sendReq:req];
 }
 else {
  [self setupAlertController];
 }
}
#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];
}

**请求****reAccess****的****response = {**
** "access_token" = "OezXcEiiBSKSxW0eoylIeK3BOTSVaRovFSXb5oysH6dewFfLsQRgU3fphSLkKkhOokra9H-JMZuB5nPoM-Iy5YbFeA1nKMRYCbL0fj_s46oFKOluGoRUY8jyTdrdDiiFdgS2fxgo5odEtpnpFk3EXA";**
** "expires_in" = 7200;**
** openid = oXskgs62CJGFhFX05dSjy9Sjw2KA;**
** "refresh_token" = "OezXcEiiBSKSxW0eoylIeK3BOTSVaRovFSXb5oysH6dewFfLsQRgU3fphSLkKkhOOWPTKGEjUtuiueutxRjKOlHGZ9b9ogc3KMbibu4eKc4yTMGzSZayjYPmwQ-c4RJE1RzMLrqvjUWgB5roFnjykw";**
** scope = "snsapi_base,snsapi_userinfo,";**
**}**

//授权后回调
/*
 http请求方式:GET
 // 根据响应结果中的code获取access_token(要用到申请时得到的AppID和AppSecret)
 https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code
 正确返回
 {
 "access_token":"ACCESS_TOKEN",
 "expires_in":7200,
 "refresh_token":"REFRESH_TOKEN",
 "openid":"OPENID",
 "scope":"SCOPE",
 "unionid":"o6_bmasdasdsad6_2sgVt7hMZOPfL"
 }
 错误返回样例
 {"errcode":40029,"errmsg":"invalid code"}
 ErrCode ERR_OK = 0(用户同意)
 ERR_AUTH_DENIED = -4（用户拒绝授权）
 ERR_USER_CANCEL = -2（用户取消）
 code 用户换取access_token的code，仅在ErrCode为0时有效
 state 第三方程序发送时用来标识其请求的唯一性的标志，由第三方程序调用sendReq时传入，由微信终端回传，state字符串长度不能超过1K
 lang 微信客户端当前语言
 country 微信用户当前国家信息
 */

-(void)showLoginController:(BOOL)shouldAnimation
{
 LoginViewController *loginController=[[LoginViewController alloc]initWithNibName:@"LoginViewController" bundle:nil];

 loginController.requestForUserInfoBlock = ^() {

  [[AppDelegate sharedInstance] wechatLoginByRequestForUserInfo];
 };

 BaseNavigationController *baseNavController=[[BaseNavigationController alloc]initWithRootViewController:loginController];
 [kAppDelegate.window.rootViewController presentViewController:baseNavController animated:shouldAnimation completion:NULL];
}

// 授权后回调
// AppDelegate.m
- (void)onResp:(BaseResp *)resp {
 // 向微信请求授权后,得到响应结果
 if ([resp isKindOfClass:[SendAuthResp class]]) {  
  SendAuthResp *temp = (SendAuthResp *)resp;
  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
  NSString *accessUrlStr = [NSString stringWithFormat:@"%@/oauth2/access_token?appid=%@&secret=%@&code=%@&grant_type=authorization_code", WX_BASE_URL, WXPatient_App_ID, WXPatient_App_Secret, temp.code];
  [manager GET:accessUrlStr parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
   NSLog(@"请求access的response = %@", responseObject);
   NSDictionary *accessDict = [NSDictionary dictionaryWithDictionary:responseObject];
   NSString *accessToken = [accessDict objectForKey:WX_ACCESS_TOKEN]; 
   NSString *openID = [accessDict objectForKey:WX_OPEN_ID];
   NSString *refreshToken = [accessDict objectForKey:WX_REFRESH_TOKEN];
   // 本地持久化，以便access_token的使用、刷新或者持续
   if (accessToken && ![accessToken isEqualToString:@""] && openID && ![openID isEqualToString:@""]) {
    [[NSUserDefaults standardUserDefaults] setObject:accessToken forKey:WX_ACCESS_TOKEN];
    [[NSUserDefaults standardUserDefaults] setObject:openID forKey:WX_OPEN_ID];
    [[NSUserDefaults standardUserDefaults] setObject:refreshToken forKey:WX_REFRESH_TOKEN];
    [[NSUserDefaults standardUserDefaults] synchronize]; // 命令直接同步到文件里，来避免数据的丢失
   }
   [self wechatLoginByRequestForUserInfo];
  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
   NSLog(@"获取access_token时出错 = %@", error);
  }];
 }
}

https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code

{ 
"access_token":"ACCESS_TOKEN", // 接口调用凭证
 "expires_in":7200, // access_token接口调用凭证超时时间，单位（秒）
"refresh_token":"REFRESH_TOKEN", // 用户刷新access_token
"openid":"OPENID", // 授权用户唯一标识
"scope":"SCOPE", // 用户授权的作用域，使用逗号（,）分隔
"unionid":"o6_bmasdasdsad6_2sgVt7hMZOPfL" // 只有在用户将公众号绑定到微信开放平台帐号后，才会出现该字段
}

http请求方式:GET
 https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID

// AppDelegate.m
// 获取用户个人信息（UnionID机制）
- (void)wechatLoginByRequestForUserInfo {
 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
 NSString *accessToken = [[NSUserDefaults standardUserDefaults] objectForKey:WX_ACCESS_TOKEN];
 NSString *openID = [[NSUserDefaults standardUserDefaults] objectForKey:WX_OPEN_ID];
 NSString *userUrlStr = [NSString stringWithFormat:@"%@/userinfo?access_token=%@&openid=%@", WX_BASE_URL, accessToken, openID];
 // 请求用户数据
 [manager GET:userUrlStr parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
  NSLog(@"请求用户信息的response = %@", responseObject);
  // NSMutableDictionary *userDict = [NSMutableDictionary dictionaryWithDictionary:responseObject];
 } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
  NSLog(@"获取用户信息时出错 = %@", error);
 }];
}

返回的Json结果
 {
 "openid":"OPENID",
 "nickname":"NICKNAME",
 "sex":1,
 "province":"PROVINCE",
 "city":"CITY",
 "country":"COUNTRY",
 "headimgurl": "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/0",
 "privilege":[
 "PRIVILEGE1",
 "PRIVILEGE2"
 ],
 "unionid": " o6_bmasdasdsad6_2sgVt7hMZOPfL"
 }
 返回错误的Json事例
 {
 "errcode":40003,"errmsg":"invalid openid"
 }

// access_token openid refresh_token unionid
#define WXDoctor_App_ID @"wxd1931d4a0e462***" // 注册微信时的AppID
#define WXDoctor_App_Secret @"d0dd6b58da42cbc4f4b715c70e65c***" // 注册时得到的AppSecret
#define WXPatient_App_ID @"wxbd02bfeea4292***"
#define WXPatient_App_Secret @"4a788217f363358276309ab655707***"
#define WX_ACCESS_TOKEN @"access_token"
#define WX_OPEN_ID @"openid"
#define WX_REFRESH_TOKEN @"refresh_token"
#define WX_UNION_ID @"unionid"
#define WX_BASE_URL @"https://api.weixin.qq.com/sns"