接入VK登录

官方SDK github

SDK下载

官方文档

后台

1.vk后台创建应用 – 地址

2.下载SDK

3.将SDK加入项目中

将下列代码加到info.plist中

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>vk</string>
    <string>vk-share</string>
    <string>vkauthorize</string>
</array>

添加成功后如下所示

在info中，URL Types添加如下内容，其中Identifier和URL Schemes为vk+VK后台创建的应用ID

在需要调用的地方导入#import <VKSdkFramework/VKSdkFramework.h>
```
#import <VKSdkFramework/VKSdkFramework.h>
```

SDK初始化

1.将代码放入应用程序委托方法里

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options {
    [VKSdk processOpenURL:url fromApplication:options[UIApplicationOpenURLOptionsSourceApplicationKey]];
    return YES;
}

注意：如果您已经添加了FaceBook SDK，并且返回了其中一种方法[FBSDKDelegate ...]，则可以对其进行处理

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {

    [[FBSDKApplicationDelegate sharedInstance] application:application openURL:url sourceApplication:sourceApplication annotation:annotation];
    [VKSdk processOpenURL:url fromApplication:sourceApplication];
    return YES;
}

3.在需要调用的页面

- (**void**)viewDidLoad {
	[super viewDidLoad];

	[[VKSdk initializeWithAppId:@"3974615"] registerDelegate:self];
    [[VKSdk instance] setUiDelegate:self];
    SCOPE = @[VK_PER_FRIENDS, VK_PER_EMAIL];
    [VKSdk wakeUpSession:SCOPE completeBlock:^(VKAuthorizationState state, NSError *error) {
        NSLog(@"state:%lu",(unsigned long)state);
        if (state == VKAuthorizationAuthorized) {
            NSLog(@"可以登录");
            
        } else if (error) {
            NSLog(@"发生错误:%@",error.description);
            
        }
    }];
}

4.添加delegate

<VKSdkUIDelegate,VKSdkDelegate>

5.在点击VK登录的方法里调用如下方法

[VKSdk authorize:SCOPE];

6.实现代理方法

- (void)vkSdkAccessAuthorizationFinishedWithResult:(VKAuthorizationResult *)result {
    
    if (result.token) {
        NSLog(@"userid:%@",result.token.userId);
        NSLog(@"accessToken:%@",result.token.accessToken);
        //登录成功，获取到userId，执行后续操作（如登录等）
        
    } else if (result.error) {//失败
        NSLog(@"error:%@",result.error.description);
    }
}

- (void)vkSdkNeedCaptchaEnter:(VKError *)captchaError {
    VKCaptchaViewController *vc = [VKCaptchaViewController captchaControllerWithError:captchaError];
    [vc presentIn:self.navigationController.topViewController];
}

- (void)vkSdkTokenHasExpired:(VKAccessToken *)expiredToken {
    [VKSdk authorize:SCOPE];
}

- (void)vkSdkUserAuthorizationFailed {
    NSLog(@"failed");
}

- (void)vkSdkShouldPresentViewController:(UIViewController *)controller {
    [self.navigationController.topViewController presentViewController:controller animated:YES completion:nil];
}