[英]Objective c - iOS 10 Facebook login blank screen
在我的应用程序中,可以选择使用Facebook登录。
在iOS 9.3上可以正常运行。
我正在使用以下代码启动登录过程:
- (void)FacbookLoginButtonPressed:(id)sender {
[self showLoader];
FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
[login
logInWithReadPermissions: @[@"public_profile", @"email"]
fromViewController:self
handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
if (error) {
NSLog(@"Process error");
[self hideLoader];
[self showError:@"Error" message:@"Please try to use other login option"];
} else if (result.isCancelled) {
NSLog(@"Cancelled");
[self hideLoader];
[self showError:@"Error" message:@"Please try to use other login option"];
} else {
[self loginButton:sender didCompleteWithResult:result error:error];
NSLog(@"Logged in");
}
}];
}
self
是我的ViewController调用显示该按钮的loginViewController
,它继承自UIViewController
我的应用程序使用此库进行幻灯片导航: https : //github.com/aryaxt/iOS-Slide-Menu
有两个选项可显示loginViewController
屏幕:
1.在常规屏幕上(继承自UIViewController
),有一个按钮,单击此代码即可运行:
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:@"loginScreen";
[self presentViewController:vc animated:YES completion:nil];
这项工作很好,我可以成功登录Facebook。
2.从也继承自UIViewController
其他屏幕开始,但是此屏幕是幻灯片菜单,我在AppDelegate
有此代码
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
MenuViewController *menu = [sb instantiateViewControllerWithIdentifier:@"MenuViewController";
[SlideNavigationController sharedInstance].rightMenu = menu;
使用此选项,facebook登录不起作用(黑屏)
为了尝试使其有效而执行的操作:
从菜单(第二个选项)出现loginViewController
时,我在日志中唯一拥有的东西是:
Presenting view controllers on detached view controllers is discouraged <loginViewController: 0x7622fb0>.
我能做什么?
我终于解决了它,在MenuViewController
我更改了将loginViewController
呈现为此的方式:
[self.view.window.rootViewController presentViewController:vc animated:YES completion:nil];
在iOS 10中,您需要openURL的另一种实现:
#ifdef __IPHONE_9_0
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url options:(NSDictionary *)options {
[[FBSDKApplicationDelegate sharedInstance] application:application openURL:url sourceApplication:options[UIApplicationOpenURLOptionsSourceApplicationKey] annotation:options[UIApplicationOpenURLOptionsAnnotationKey]];
return YES;
}
#else
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
[[FBSDKApplicationDelegate sharedInstance] application:application openURL:url sourceApplication:sourceApplication annotation:annotation];
return YES;
}
#endif
[self presentViewController:vc animated:YES completion:nil]
用。。。来代替
[self.view.window.rootViewController presentViewController:vc animated:YES completion:nil]
并尝试
请确保您编写以下代码:
[window makeKeyAndVisible];
在
didFinishLaunchingWithOptions
func loginAction() {
let manager = LoginManager.init(loginBehavior: LoginBehavior.web, defaultAudience: LoginDefaultAudience.friends)
manager.logIn([.publicProfile, .email, .userFriends], viewController: self.navigationController, completion: { (loginResult) in
print("LOGIN RESULT! \(loginResult)")
switch loginResult {
case .failed(let error):
print("FACEBOOK LOGIN FAILED: \(error)")
case .cancelled:
print("User cancelled login.")
case .success(let grantedPermissions, let declinedPermissions, let accessToken):
print("Logged in!")
print("GRANTED PERMISSIONS: \(grantedPermissions)")
print("DECLINED PERMISSIONS: \(declinedPermissions)")
print("ACCESS TOKEN \(accessToken)")
}
})
}
我将viewController从self
更改为self.navigationController
并且可以正常工作。
在尝试了网上所有的解决方案之后,这对我有用。
PFFacebookUtils.facebookLoginManager().loginBehavior = FBSDKLoginBehavior.web
(问题出在iOS10中,它试图使用“浏览器”的loginBehavior导致空白页),所以我强迫它加载“网络”
Swift版本答案。
在“ AppDelegate.swift”文件中:
func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey: Any] = [:]) -> Bool {
FBSDKApplicationDelegate.sharedInstance().application(app, open: url, sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as? String, annotation: options[UIApplicationOpenURLOptionsKey.annotation])
return true
}
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