我已经使用Swift 3为iOS 10上的Facebook登录创建了一个自定义按钮。不幸的是,Facebook登录不会显示SafariViewController,直到我第二次按下UIButton。感谢断点我知道它调用了loginManager.logIn(),但是在第二次按下UIButton之前它永远不会进入回调。虽然如果我使用FacebookLoginButton()和我的自定义一切正常。我真的不知道问题是什么。希望您能够帮助我。谢谢!
这是我的ViewController:
import UIKit
import FacebookCore
import FacebookLogin
class ViewController: UIViewController {
override func viewDidLoad() {
self.view.backgroundColor = .blue
// Add a custom login button to your app
let myLoginButton = UIButton(type: .system)
myLoginButton.backgroundColor = .red
myLoginButton.frame = CGRect(x: 0, y: 0, width: 180, height: 40)
myLoginButton.center = view.center;
myLoginButton.setTitle("My Button", for: .normal)
// Handle clicks on the button
myLoginButton.addTarget(self, action: #selector(self.loginButtonClicked), for: .touchUpInside)
// Add the button to the view
view.addSubview(myLoginButton)
}
// Once the button is clicked, show the login dialog
func loginButtonClicked() {
let loginManager = LoginManager()
loginManager.logIn([.publicProfile], viewController: self) { (loginResult) in
switch loginResult {
case .failed(let error):
print(error)
case .cancelled:
print("User cancelled login.")
case .success(let grantedPermissions, let declinedPermissions, let accessToken):
print("Logged in!")
}
}
}
和我的info.plist(唯一的变化是我的应用程序名称和ID的占位符:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<key>UIRequiredDeviceCapabilities</key>
<array>
<string>armv7</string>
</array>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>CFBundleURLTypes</key>
<array>
<dict>
<key>CFBundleURLSchemes</key>
<array>
<string>fb[A Number]</string>
</array>
</dict>
</array>
<key>FacebookAppID</key>
<string>[My Facebook App ID]</string>
<key>FacebookDisplayName</key>
<string>[My App Name]</string>
<key>LSApplicationQueriesSchemes</key>
<array>
<string>fbapi</string>
<string>fb-messenger-api</string>
<string>fbauth2</string>
<string>fbshareextension</string>
</array>
更新:这已被facebook https://developers.facebook.com/bugs/622990254549819/is
确认为错误答案 0 :(得分:1)
问题与驻留在Facebook SDK中的方法有关
- (void)logInWithBehavior:(FBSDKLoginBehavior)loginBehavior
{
__weak __typeof__(self) weakSelf = self;
[FBSDKServerConfigurationManager loadServerConfigurationWithCompletionBlock:^(FBSDKServerConfiguration *serverConfiguration, NSError *loadError) {
[weakSelf logInWithBehavior:loginBehavior serverConfiguration:serverConfiguration serverConfigurationLoadError:loadError];
}];
}
您将无法在视图中登录,因为使用包含LoginManager init的按钮回调,FBSDKServerConfigurationManager在您第一次按下登录按钮时为空,而是在第二次时为init。
我已经解决了一个非常类似的问题,只是将管理器声明为全局变量并在viewDidLoad中创建LoginManager的初始化。