在 iOS 8 中使用 logInWithReadPermissions 登录效果很好，但更新到 iOS 9 后，它会不断打开 Safari 或模态 UIWebView。
有人有同样的问题吗？
FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
[login setLoginBehavior:FBSDKLoginBehaviorNative];
[login logInWithReadPermissions:@[@"public_profile",@"email"] fromViewController:nil handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
NSLog(@"");
}];
Seems there's no way to get the previous behavior using newests FB SDKs in iOS9+. You can use an old SDK to do that. Here's a response from the facebook to that question: 