Problems with NSNotificationCenter and loading the UIViewControlletr - ios

Question

I have a UIViewController with button that brings another UIViewController. with clicking on button , as shown in my NSLog, and when this is done, I want to send a notification to load another viewcontroller . Well, although it seems everything is done right, somehow it does not work and the UIViewController not appear. Here is the code:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(infoPage:)
name:#"InfoPage" object:nil ];
-(void) infoPage:(NSNotification*)notification
{
NSLog(#"Code executing in Thread %#",[NSThread currentThread] );
InfoCtrol *i = [[InfoCtrol alloc] init];
i.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:i animated:YES];
}
my tabbaritem button
-(void)info {
[[NSNotificationCenter defaultCenter] postNotificationName:#"InfoPage"
object:nil
userInfo:nil];
NSLog(#"test not");
}
I think my problem is that: It's not in a mainThread but I do n't know how should I solved that:
I also used this but it didn't bring the UIViewController:
[self performSelectorOnMainThread:#selector(test) withObject:nil waitUntilDone:NO];
-(void)test{
[[NSNotificationCenter defaultCenter] postNotificationName:#"InfoPage"
object:nil
userInfo:nil];
}
If I just put this code in button, it displays the UIViewController, but I want to use NSNotificationCenter
InfoCtrol *i = [[InfoCtrol alloc] init];
i.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:i animated:YES];
My Log:
Code executing in Thread <NSThread: 0x1fd7c7e0>{name = (null), num = 1}
Update:
How should i remove last thread from mainThread

Answer 1

I don't know why you want to use a notification here, when you can perform the action directly without issue. But a simple thing you can do in notification methods that need to update UI is to just have them call themselves on the main thread if they're not already running on that thread:
-(void)myNotificationMethod:(NSNotification*)note {
if (![NSThread isMainThread]) {
[self performSelectorOnMainThread:#selector(myNotificationMethod:)
withObject:note
waitUntilDone:NO];
return;
}
// ... do some UI stuff
InfoCtrol *i = [[InfoCtrol alloc] init];
[self.navigationController pushViewController:i animated:YES];
}