custom Facebook logout button not worked in IOS - ios

Question

I am new to IOS and I created a Facebook custom login and logout buttons for my app using Facebook SDK. Login button works as I expected, but when I clicked my logout button, it gives the login page as I redirected to it. Then, when I try to login again, it doesn't show the Facebook login UI. But when I logged out my Facebook app and try to login to my app, the login UI works well. Here is my logout button.
- (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];
}
Do I need to implement a logout button in my view controller or does FB SDK provides the logout facility it self?
# Vinod Jat,,
I made following changes in my appDelegate..
- (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];
}