我是IOS的新手，我使用Facebook SDK为我的应用创建了一个Facebook自定义登录和注销按钮。登录按钮按预期工作，但当我单击我的注销按钮时，它会在我重定向到它时提供登录页面。然后，当我再次尝试登录时，它不会显示Facebook登录UI。但是当我退出我的Facebook应用程序并尝试登录我的应用程序时，登录UI运行良好。这是我的退出按钮。
- (IBAction)btnClicked:(id)sender {
[FBSession.activeSession closeAndClearTokenInformation];
NSLog(@"log out");
LoginUIViewController *loginController1= [[LoginUIViewController alloc] initWithNibName:@"LoginUIViewController" bundle:nil];
[self presentViewController:loginController1 animated:YES completion:nil];
}
我是否需要在视图控制器中实现注销按钮，或者FB SDK是否自行提供注销功能？
@ Vinod Jat ,, 我在appDelegate中进行了以下更改..
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[SplashViewController alloc] initWithNibName:@"SplashViewController" bundle:nil];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
// Whenever a person opens the app, check for a cached session
if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {
// If there's one, just open the session silently, without showing the user the login UI
[FBSession openActiveSessionWithReadPermissions:@[@"public_profile"]
allowLoginUI:NO
completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
[self sessionStateChanged:session state:state error:error];
}];
}
return YES;
}
//This method will handle ALL the session state changes in the app
- (void)sessionStateChanged:(FBSession *)session state:(FBSessionState) state error:(NSError *)error
{
// If the session was opened successfully
if (!error && state == FBSessionStateOpen){
NSLog(@"Session opened");
return;
}
if (state == FBSessionStateClosed || state == FBSessionStateClosedLoginFailed){
// If the session is closed
NSLog(@"Session closed");
}
.........
}
**In my loginUIViewController I have added following method..**
- (IBAction)FbloginButton:(id)sender {
NSLog(@"inside login button");
[FBSession openActiveSessionWithReadPermissions:@[@"public_profile"]
allowLoginUI:YES
completionHandler:
^(FBSession *session, FBSessionState state, NSError *error) {
NSLog(@"inside login button2");
// Retrieve the app delegate
TNLAppDelegate* appDelegate = [UIApplication sharedApplication].delegate;
// Call the app delegate's sessionStateChanged:state:error method to handle session state changes
[appDelegate sessionStateChanged:session state:state error:error];
NSLog(@"inside login button3");
}];
//redirect to now playing page
NowPlayingViewController *nowPlaying= [[NowPlayingViewController alloc] initWithNibName:@"NowPlayingViewController" bundle:nil];
[self presentViewController:nowPlaying animated:YES completion:nil];
}