blocks|key|1869305|text|确保您的权限输入正确。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1869306|+++func+loginButton(loginButton:+FBSDKLoginButton!,+didCompleteWithResult+result:+FBSDKLoginManagerLoginResult!,+error:+NSError!)+{

++++++++++++if+error+==+nil+{
++++++++++++++++println("login+complete")
++++++++++++++++self.performSegueWithIdentifier("showLogin",+sender:+self)

++++++++++++}else{

++++++++++++++++println(error.localizedDescription)
++++//com.facebook.sdk.core+error+8.
++++++++++++}
++++++++}|code-block|syntax|javascript|1869307|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Make sure your permissions are typed correctly 

<pre><code> func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {

 if error == nil {
 println("login complete")
 self.performSegueWithIdentifier("showLogin", sender: self)

 }else{

 println(error.localizedDescription)
 //com.facebook.sdk.core error 8.
 }
 }
</code></pre>

blocks|key|1869309|text|在我的例子中，这个错误是由应用程序本身的facebook设置中的不正确的包id设置造成的。Facebook的“包id”是区分大小写的，在我的Info.plist中我有大写的产品名称，但是在fb设置中-小写。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1869310|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case this error was caused by improper bundle id set in facebook settings of the app itself. Facebook "bundle id" is case sensitive, in my Info.plist I had uppercase product name, but in fb settings - lowercase.

blocks|key|1869328|text|在我的例子中，我使用的Facebook帐户还没有添加到Facebook应用程序的管理员/开发人员/测试人员角色中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1869329|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case, I was using a Facebook account that hadn't yet been added to any of the Facebook app's admins/developers/testers roles.

blocks|key|1869403|text|在我的例子中，经过几个小时的调试，我发现我正在使用API，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1869404|func+application(application:+UIApplication,
+++++++++++++++++openURL+url:+NSURL,+options:+[String:+AnyObject])+->+Bool+{
++++if+#available(iOS+9.0,+*)+{
++++++++FBSDKApplicationDelegate.sharedInstance().application(application,+didFinishLaunchingWithOptions:+options)
++++}+else+{
++++++++//+Fallback+on+earlier+versions
++++}
++++return+true
}|code-block|syntax|javascript|1869405|因此，我使用了：|1869406|func+application(application:+UIApplication,
+++++++++++++++++openURL+url:+NSURL,+sourceApplication:+String?,+annotation:+AnyObject)+->+Bool+{
++++FBSDKApplicationDelegate.sharedInstance().application(application,+openURL:+url,+sourceApplication:+sourceApplication,+annotation:+annotation)
++++return+true
}|1869407|对我起作用了。希望这能节省某人的时间。|1869408|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

In my case, after spending several hours of debugging I found that I was using the API,

<pre><code>func application(application: UIApplication,
 openURL url: NSURL, options: [String: AnyObject]) -&gt; Bool {
 if #available(iOS 9.0, *) {
 FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: options)
 } else {
 // Fallback on earlier versions
 }
 return true
}
</code></pre>

which is deprecated for iOS 9.So, I used:

<pre><code>func application(application: UIApplication,
 openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -&gt; Bool {
 FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation)
 return true
}
</code></pre>

Which worked for me. Hope this saves time of someone.

blocks|key|1869454|text|我也有同样的问题。这是因为我没有实现facebook的登录功能。在添加了这个之后，我登录并解决了我的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1869455|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same problem. It was because I didn't implement facebook login feature. After adding that, I logged in and my problem got solved.

blocks|key|1869468|text|就我而言，这是错误的版本。我使用的不是版本："v2.7"，而是使用了版本："2.7"|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1869469|entityMap^0|J|9|Y|8|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

In my case It was wrong version. Instead of version: "v2.7", I used version: "2.7"

blocks|key|540849|text|伙计！在我的例子中，是参数中的"bio“导致了这个错误。Facebook已经将“生物”键改为“关于”。因此，任何在参数中使用"bio“的人都应该将其更改为”约“。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|540850|菲奥！|540851|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

MAN!!! In my case it was the "bio" in the parameter that was causing this error. Facebook has changed the "bio" key to "about". So anyone using "bio" in parameters should change it to "about"

Pheww!!!

blocks|key|716758|text|在我的例子中，我正在玩Facebook的Ads+API，我试图获得一个领域，但名字是错误的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|716759|我有见解{date_start，date_end}，而不是洞察力{date_start，date_stop}。|offset|length|style|BOLD|716760|更多信息，这里。|716761|希望它对任何人都有帮助。|716762|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.facebook.com/docs/marketing-api/insights/fields/v2.8^0|0|18|9|0|5|2|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@$D|V|E|W|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

In my case, I was playing with the Facebook Ads API and I tried to get a field but the name was wrong.

I had insights{date_start,date_end}, instead of insights{date_start, date_stop}.

More info <a href="https://developers.facebook.com/docs/marketing-api/insights/fields/v2.8" rel="nofollow noreferrer">here</a>.

Hope it helps anyone.

blocks|key|540876|text|在我的例子中，这是因为我在字段数组中列出了两次name。假设这将适用于任何请求两次的字段。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|540877|entityMap^0|N|4|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

In my case it was because I listed <code>name</code> twice in the fields array. Assume that would apply to any field requested twice.

blocks|key|542877|text|在我的例子中，我试图在不登录Facebook的情况下获取Facebook+Id。确保你登录了Facebook。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|542878|let+accessToken+=+FBSDKAccessToken.current()
++++if+accessToken+!=+nil+{

++++++++self.getCurrentUserFbId()
++++++++print("LoggedIn")

++++}+else+{

++++++++print("Not+loggedIn")
++++++++self.loginIntoFacebook()
++++}|code-block|syntax|javascript|542879|希望这对任何人都有帮助。|542880|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In my case, I tried to get Facebook Id without logging into Facebook. Make sure you're logged into Facebook.

<pre><code>let accessToken = FBSDKAccessToken.current()
 if accessToken != nil {

 self.getCurrentUserFbId()
 print("LoggedIn")

 } else {

 print("Not loggedIn")
 self.loginIntoFacebook()
 }
</code></pre>

Hope this will helpful for anyone.

blocks|key|540906|text|当它发生在我身上时，我发现Facebook的访问令牌过期了。有人决定在UserDefaults中存储访问令牌，并在以后重用它。当然，所有超过2个月的代币都过期了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|540907|entityMap^0|Z|C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

When it happened to me, I found that Facebook's access token was expired. Someone decided to store access token in <code>UserDefaults</code> and reuse it later. Of course all tokens more than ~2 months old were expired.

blocks|key|1869648|text|在我的例子中，这是因为GraphRequest。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1869649|错误响应是|1869650|"com.facebook.sdk:FBSDKErrorDeveloperMessageKey“=”语法错误\“字符串的预期结尾，而不是字符5处的”%25%25\“.\：电子邮件%252+2Cname%252+email%252+C图片；"com.facebook.sdk:FBSDKGraphRequestErrorCategoryKey”=+0；"com.facebook.sdk:FBSDKGraphRequestErrorGraphErrorCode“=+2500；"com.facebook.sdk:FBSDKGraphRequestErrorHTTPStatusCodeKey”=+400；"com.facebook.sdk:FBSDKGraphRequestErrorParsedJSONResponseKey“={+body+={fbtrace_id=+2500；"fbtrace_id”=+AFEUYbcYP39；message+=+"Syntax+\“预期字符串的结尾，而不是字符5处的”%25\“.\：email%252Cname%252+code+%252+C图片；type+=+OAuthException；}；代码=+400；}；|blockquote|1869651|这方面的问题是https://github.com/facebook/facebook-swift-sdk/issues/309|offset|length|1869652|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/facebook/facebook-swift-sdk/issues/309^0|0|0|0|7|1L|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|V|8|@]|9|@$I|W|J|X|1|Y]]|A|$]]|$1|K|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

In my case it was because of GraphRequest.

The error response is 

<blockquote>
 "com.facebook.sdk:FBSDKErrorDeveloperMessageKey" = "Syntax error
 \"Expected end of string instead of \"%\".\" at character 5:
 email%2Cname%2Cgender%2Cpicture";
 "com.facebook.sdk:FBSDKGraphRequestErrorCategoryKey" = 0;
 "com.facebook.sdk:FBSDKGraphRequestErrorGraphErrorCode" = 2500;
 "com.facebook.sdk:FBSDKGraphRequestErrorHTTPStatusCodeKey" = 400;
 "com.facebook.sdk:FBSDKGraphRequestErrorParsedJSONResponseKey" = {
 body = {
 error = {
 code = 2500;
 "fbtrace_id" = AFEUYbcYP39;
 message = "Syntax error \"Expected end of string instead of \"%\".\" at character 5: email%2Cname%2Cgender%2Cpicture";
 type = OAuthException;
 };
 };
 code = 400;
 };
</blockquote>

The issue about that is <a href="https://github.com/facebook/facebook-swift-sdk/issues/309" rel="nofollow noreferrer">https://github.com/facebook/facebook-swift-sdk/issues/309</a>

blocks|key|716902|text|对我来说是因为生日朋友名单。移除它们就开始起作用了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|716903|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case was because of birthday,friendlists . removing them started to work.

blocks|key|542957|text|在我们的例子中，我们在尝试使用一些测试帐户(但不是全部)登录时看到了这个问题。我们没有跟踪Facebook的推荐做法|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|542958|在测试下面的每个用例之前，请确保使用应用程序设置将应用程序从测试用户的Facebook帐户中删除。|blockquote|542959|在我们为失败的测试帐户做了它之后，我们就能够登录了。|542960|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.facebook.com/docs/facebook-login/testing-your-login-flow/^0|1I|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|W|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

In our case we were seeing this issue while trying to log in with some test account (but not all). We were not following Facebook's <a href="https://developers.facebook.com/docs/facebook-login/testing-your-login-flow/" rel="nofollow noreferrer">recommended practice</a>:
<blockquote>
Before you test each use case below, make sure you remove your app from your test user's Facebook account using app settings.
</blockquote>
After we did it for the failing test accounts, we were able to log in.

This is more informative than anything. I couldn't for the life of me find anything on error code 8 when trying to access the login prompt (aka safari) when debugging my ios app. After I hit the log into facebook button in my app it would attempt to open safari then dump me back to the login page to my app. The error was being caused by the permissions array. I had the the permission "public_profile" spelled "public profile" which was throwing an error obviously. So make sure your permission are type corrected if you get the com.facebook.sdk.core error 8.

Hope that helps someone.

com.facebook.sdk.core error 8

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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这比任何信息都要丰富。在调试我的ios应用程序时，我在尝试访问登录提示(也称为safari)时，在错误代码8上找不到任何东西。在我点击应用程序中的登录到facebook按钮后，它会尝试打开safari，然后将我扔回我的应用程序的登录页面。错误是由权限数组引起的。我的权限"public_profile“拼写为”公共配置文...

问com.facebook.sdk.core误差8
EN

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