Objective-C: How to call performSelector with a BOOL typed parameter?

Question

Is there any way to send a BOOL in selector ?

[self performSelector:@selector(doSomething:) withObject:YES afterDelay:1.5]; 

Or I should use NSInvocation? Could somebody write a sample please ?

Answer 1

In the case that you cannot alter the target-method signature to accept a NSNumber in place of a BOOL you can use NSInvocation instead of performSelector:

MyTargetClass* myTargetObject; BOOL myBoolValue = YES; // or NO  NSMethodSignature* signature = [[myTargetObject class] instanceMethodSignatureForSelector: @selector( myMethodTakingBool: )]; NSInvocation* invocation = [NSInvocation invocationWithMethodSignature: signature]; [invocation setTarget: myTargetObject]; [invocation setSelector: @selector( myMethodTakingBool: ) ]; [invocation setArgument: &myBoolValue atIndex: 2]; [invocation invoke]; 

Answer 2

you can use NSNumber to wrap bools types:

BOOL myBool = YES; NSNumber *passedValue = [NSNumber numberWithBool:myBool]; [self performSelector:@selector(doSomething:) withObject:passedValue afterDelay:1.5]; 

and in the selector, to get the bool value, you use:

BOOL value = [recievedObject boolValue];