我有两节课。
更详细：
var socialNetworkUsed = ""
var twitterIDToken = ""
var facebookIDToken = ""
var googleIDToken = ""
var twitterHasSegued = false //used to stop twitter interupting the segue into the app after login has happened
@IBAction func loginWIthEmailButton(_ sender: Any) {
print("login With Email Pressed")
performSegue(withIdentifier: "emailLogin", sender: self)
}
override func viewDidLoad() {
super.viewDidLoad()
loginWithTwitter()
loginWithFacebook()
loginWithGoogle()
//getCognitoID()
GIDSignIn.sharedInstance().clientID = "#################"
GIDSignIn.sharedInstance().uiDelegate = self
GIDSignIn.sharedInstance().delegate = self
GIDSignIn.sharedInstance().shouldFetchBasicProfile = true
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func loginWithTwitter () {
let logInButton = TWTRLogInButton { (session, error) in
if let unwrappedSession = session {
self.socialNetworkUsed = "Twitter"
self.twitterIDToken = unwrappedSession.authToken + ";" + unwrappedSession.authTokenSecret
let client = TWTRAPIClient.withCurrentUser()
client.requestEmail { email, error in
if (email != nil) {
print("signed in as \(String(describing: session?.userName))")
print(email!)
} else {
print("error: \(String(describing: error?.localizedDescription))")
}
}
self.signInToCognito(theUser: unwrappedSession)
self.twitterHasSegued = true
} else {
NSLog("Login error: %@", error!.localizedDescription);
}
}
if twitterHasSegued == false {
// TODO: Change where the log in button is positioned in your view
let button = logInButton
button.center = self.view.center
self.view.addSubview(button)
}
}
func loginWithFacebook () {
let loginButton = FBSDKLoginButton()
loginButton.readPermissions = ["public_profile", "email", "user_friends"]
loginButton.center.y = self.view.center.y/3
loginButton.center.x = self.view.center.x
self.view.addSubview(loginButton)
loginButton.delegate = self
}
public func loginButton(_ loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: Error!) {
if result != nil {
self.socialNetworkUsed = "Facebook"
if let theUser = result {
self.facebookIDToken = theUser.token.tokenString
print("First token \(facebookIDToken)")
FBSDKGraphRequest(graphPath:"me", parameters: ["fields" : "id, name, email"]).start(completionHandler: { (connection, result, error) in
if error == nil {
self.facebookIDToken = FBSDKAccessToken.current().tokenString
print("Second token \(self.facebookIDToken)")
let data:[String:AnyObject] = result as! [String : AnyObject]
print("Facebook logged in: \(data["name"]!)\(data["email"]!)")
self.signInToCognito(theUser: data)
} else {
print("Error Getting Info \(error!)");
}
})
}}
}
/**
Sent to the delegate when the button was used to logout.
- Parameter loginButton: The button that was clicked.
*/
public func loginButtonDidLogOut(_ loginButton: FBSDKLoginButton!){
print("loggedout of facebook")
}
func loginWithGoogle () {
let loginButton = GIDSignInButton()
loginButton.center.y = view.center.y/1.5
loginButton.center.x = view.center.x
view.addSubview(loginButton)
}
func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {
if (error == nil) {
socialNetworkUsed = "Google"
// Perform any operations on signed in user here.
let userId = user.userID // For client-side use only!
self.googleIDToken = user.authentication.idToken // Safe to send to the server
let fullName = user.profile.name
let givenName = user.profile.givenName
let familyName = user.profile.familyName
let email = user.profile.email
signInToCognito(theUser: user)
print(userId, fullName, email, givenName, familyName)
// ...
} else {
print("\(error.localizedDescription)")
}
}
func signInToCognito (theUser: Any) {
let credentialsProvider = AWSCognitoCredentialsProvider(regionType:.EUWest2, identityPoolId:"#######################",identityProviderManager: self)
let configuration = AWSServiceConfiguration(region:.EUWest2, credentialsProvider:credentialsProvider)
AWSServiceManager.default().defaultServiceConfiguration = configuration
credentialsProvider.getIdentityId().continueWith { (task: AWSTask!) -> AnyObject! in
if (task.error != nil) {
print("Error: " + (task.error?.localizedDescription)!)
} else {
// the task result will contain the identity id
let cognitoId = task.result
let syncClient = AWSCognito.default()
print("sync client is \(syncClient.configuration.userAgent)")
}
return nil
}
let syncClient = AWSCognito.default()
// Create a record in a dataset and synchronize with the server
let dataset = syncClient.openOrCreateDataset("myDataset")
if self.socialNetworkUsed == "Twitter" { // if they have used twitter to login
let user = theUser as! TWTRSession
dataset.setString(user.userName, forKey:"userName")
dataset.setString("Mystery Climber", forKey: "name")
let client = TWTRAPIClient.withCurrentUser()
client.requestEmail { email, error in
if (email != nil) {
dataset.setString(email, forKey: "email")
print(email)
} else {
print("error: \(error?.localizedDescription)")
dataset.setString("none@none.com", forKey: "email")
}
}
} else if self.socialNetworkUsed == "Facebook" { // if they have used facebook to login
let user = theUser as! [String : AnyObject]
print("sign in to cognotio function facebook section \(user["name"]) & \(user["email"])")
dataset.setString(user["name"] as! String, forKey: "name")
if let email = user["email"] as? String {
dataset.setString(email, forKey: "email")
}
} else if self.socialNetworkUsed == "Google" {//if they have used google to login
let user = theUser as! GIDGoogleUser
dataset.setString(user.profile.email, forKey: "email")
dataset.setString(user.profile.name, forKey: "name")
}
dataset.synchronize().continueWith {(task: AWSTask!) -> AnyObject! in
if task.error != nil {
print("dataset error\(task.error)")
} else {
DispatchQueue.main.sync {
self.performSegue(withIdentifier: "toTheHomePage", sender: self)
}
}
return () as AnyObject
}
print(self.socialNetworkUsed)
}
public func logins() -> AWSTask<NSDictionary> {
if socialNetworkUsed == "Twitter" {
let result = NSDictionary(dictionary: [AWSIdentityProviderTwitter: twitterIDToken])
print("Twitter results done")
return AWSTask(result: result)
} else if socialNetworkUsed == "Facebook" {
if let token = FBSDKAccessToken.current() {
print("Facebook results done")
return AWSTask(result: [AWSIdentityProviderFacebook: token])
} else {
return AWSTask(error:NSError(domain: "Facebook Login", code: -1 , userInfo: ["Facebook" : "No current Facebook access token"]))}
}else if socialNetworkUsed == "Google" {
let result = NSDictionary(dictionary: [AWSIdentityProviderGoogle: googleIDToken])
print("Google results done \(result.allValues)")
return AWSTask(result: result)
} else {
let result = NSDictionary(dictionary: [AWSIdentityProvider.self: facebookIDToken])
return AWSTask(result: result)
}
}
使用该代码我收到以下错误：
java.lang.IllegalAccessError：尝试访问方法 B.method1（Ljava / lang ...）V来自A $ C级
我没有任何compalition错误，但在运行时我收到错误。这里有什么问题？
注意：B类定义位于jar文件中，该文件作为依赖项添加。 注意：当我调试时，当它调用C.someMethod时，它在框架面板上显示为
public class D extends A{
public static void main(arg){
C.someMethod(new A(), args)
}
}
public class A extends B{
.....
}
public class B{
public static final class C{
private B fieldB;
private static instance;
private C(B inB, String args){
this.fieldB = inB;
this.fieldB.method1(args) // illegalAccess
}
public static void someMethod(B b, String arg){
if(instanceC== null)
instanceC= new C(b, args)
else {..}
}
private void method1(String arg){}
}
不应该像下面那样吗？
someMethod 1253, A$C
答案 0 :(得分：1)
method1是C类的私有成员，只能由C类访问。您试图通过B类实例访问它，它会抛出IllegalAccessError
答案 1 :(得分：0)
最后我的问题已经解决，我清理了项目，并从一开始就重新启动并构建它可以工作。似乎JVM搞砸了。