Top "Performselector" questions

comparison GCD vs. performSelectorInBackground: dispatch_async not in background

Grand Central Dispatch is great and reduces the amount of code but why I cannot run something on a background …

multithreading asynchronous background grand-central-dispatch performselector

scheduledTimerWithTimeInterval vs performselector with delay with iOS 5.0

i am doing function call with scheduledTimerWithTimeInterval. i am just checking that xml parsing is completed or not for particular …

iphone objective-c ios5 nstimer performselector

How to resolve "no known instance method for selector 'performSelector:withObject:afterDelay:'" when migrating to ARC?

The ARC migration tool is refusing to accept this code prior to starting with migration: [self.delegate performSelector:@selector(overlayDismissed:) …

ios delegates automatic-ref-counting performselector

What is use of performSelector in iOS

What is the role of performSelector? Comparing: [self btnClicked]; and [self performSelector:@selector(btnClicked)]; -(void)btnClicked { NSLog(@"Method Called"); } …

ios objective-c performselector

Crash in objc_retain in method performed with performSelector

I have this strange crash relating to ARC auto-inserting objc_retains in my code. I have the following two classes: @…

xcode automatic-ref-counting performselector

iOS: Perform action after time while user is interacting / scrolling

I'm trying to get my application to perform an action after a delay, but it will have to be done …

ios uiscrollview performselector

How to invoke a class method using performSelector() on AnyClass in Swift?

In ObjC you could simply invoke a class method using the class method from NSObject. [Machine performSelector:@selector(calculate:) withObject:…

ios swift reflection performselector swift2.2