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Block Return Navigation

I have what I consider UX that happens in the background thread. In a method that uses blocks, in success, I call:

[self.navigationController popViewControllerAnimated:TRUE];

I am getting a failure, so I think checking the current thread and calling executeSelectorOnMainThread can fix this, but I'm not sure how to configure the @selector part to call.

[self performSelectorOnMainThread:@selector([self.navigationController popViewControllerAnimated:TRUE]) withObject:nil waitUntilDone:NO];

does not work. What is the correct syntax?

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2 answers

To force a method to execute the main thread, you can use:

dispatch_async(dispatch_get_main_queue(), ^{
    [self.navigationController popViewControllerAnimated:TRUE]; 
});
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, , , - , -performSelectorOnMainThread:. self :

- (void)doPop {
  [self.navigationController popViewControllerAnimated:YES];
}


[self performSelectorOnMainThread:@selector(doPop)];

, :

-performSelectorOnMainThread: , , - id. -popViewControllerAnimated: , , BOOL (, , YES NO not TRUE FALSE).

, @selector , , ( self.navigationController).

. , self.navigationController -popViewControllerAnimated: , :

[self.navigationController performSelectorOnMainThread:@selector(popViewControllerAnimated:) withObject:nil waitUntilDone:NO];

, . , pop , . perform , - pop .

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