使用Swift在Facebook登錄后加載另一個ViewController

Question

我試圖快速成功登錄Facebook后嘗試加載另一個視圖控制器。 我一直在關注此博客文章： http : //studyswift.blogspot.com.tr/2016/01/facebook-sdk-and-swift-create-facebook.html

我配置了一個名為“ redirectAfterLogin ”的segue，並嘗試使用performSegueWithIdentifier

在下面，您可以查看我的ViewController.swift和AppDelegate.swift文件。 不知何故我想念一些東西。 有什么建議么？

ViewController.swift

import UIKit
import FBSDKLoginKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let loginButton = FBSDKLoginButton()
        loginButton.center = view.center
        view.addSubview(loginButton)
        //self.performSegueWithIdentifier("redirectAfterLogin", sender: self)

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    /*
    func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result:FBSDKLoginManagerLoginResult!, error: NSError!) {
        if error == nil {
            print("login complete")
            self.performSegueWithIdentifier("redirectAfterLogin", sender: self)
        }
        else {
            print(error.localizedDescription)
        }

    }
    */

}

AppDelegate.swift

import UIKit

import FBSDKCoreKit
import FBSDKLoginKit
import FBSDKShareKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool {
        return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation)
    }

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
        return true
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
        FBSDKAppEvents.activateApp()
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

這是我登錄模擬器后的輸出：

2016-02-11 14：43：49.712 TMR-Prototype1 [22260：3512428] -canOpenURL：URL失敗：“ fbauth2：/”-錯誤：“（空）”

2016-02-11 14：43：49.717 TMR-Prototype1 [22260：3512428] -canOpenURL：URL失敗：“ fbauth2：/”-錯誤：“（空）”

這是屏幕截圖。 它停留在第一個viewcontroller上：

我也將Info.plist文件編輯為：

<?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>CFBundleSignature</key>
    <string>????</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>UISupportedInterfaceOrientations~ipad</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>

    <!-- following stuff added by me as for facebook login -->

    <key>CFBundleURLTypes</key>
    <array>
        <dict>
            <key>CFBundleURLSchemes</key>
            <array>
                <string>fbXXXYYYZZZ</string>
            </array>
        </dict>
    </array>
    <key>FacebookAppID</key>
    <string>XXXYYYZZZ</string>

    <key>FacebookDisplayName</key>
    <string>TMR</string>

    <key>NSAppTransportSecurity</key>
    <dict>
        <key>NSExceptionDomains</key>
        <dict>
            <key>facebook.com</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
                <false/>
            </dict>
            <key>fbcdn.net</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
                <false/>
            </dict>
            <key>akamaihd.net</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
                <false/>
            </dict>
        </dict>
    </dict>

    <key>LSApplicationQueriesSchemes</key>
    <array>
        <string>fbapi</string>
        <string>fb-messenger-api</string>
        <string>fbauth2</string>
        <string>fbshareextension</string>
    </array>

</dict>
</plist>

Answer 1

您應該將FBSDKLoginButtonDelegate實現到ViewController ，並包括委托方法。

class ViewController: UIViewController, FBSDKLoginButtonDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let loginButton = FBSDKLoginButton()
        loginButton.center = view.center
        loginButton.delegate = self // Remember to set the delegate of the loginButton
        view.addSubview(loginButton)
    }

    func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
        /* 
           Check for successful login and act accordingly.
           Perform your segue to another UIViewController here.
        */
    }

    func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) {
        // Actions for when the user logged out goes here
    }
}