Disable a CCbutton until a CCActionSequence completes - objective-c

Question

I have some code similar to below:
GameScene.m
CCButton *yesButton = [CCButton buttonWithTitle:"#YES"];
[yesButton setTarget: self selector#selector(yesButtonTapped:)];
[self addChild: yesButton];
-(void)yesButtonTapped: (id)sender
{
if(match == 1) {
[_hud updateBallNumber: ball];
}
}
HUDLayer.m
-(void)updateBallNumber: (Ball*)ball
{
int number = [ball getNumber];
id fadeIn = [CCActionFadeIn actionWithDuration:1];
id fadeOut = [CCActionFadeOut actionWithDuration:1];
id delay = [CCActionDelay actionWithDuration: randomDelay];
id change = [CCActionCallBlock actionWithBlock:^{
_ballLabel.string = [NSString stringWithFormat #"%i",number}];
id sequence = [CCActionSequence actions: fadeOut,delay,change,fadeIn,nil];
[ballLabel runAction:sequence];
}
It works as I would expect it to in that when the yesButton is pressed, the current number displayed in ball label fades out waits a random amount of time and then fades in a new number.
My question is how can I stop the yesButton being pressed again or ignore yesbutton presses until the sequence is complete and the new number is displayed.
I have tried using yesButton.enable, setting it at the beginning of -(void)yesButton to NO and then at the end to YES but this does not wait for the sequence to complete.

Answer 1

you could do that with blocks. Change updateBallNumber as
somewhere :
typedef void(^VoidBlock)();
in HUDLayer.m
-(void)updateBallNumber: (Ball*)ball withCompletion:(VoidBlock) completionBlock
{
int number = [ball getNumber];
VoidBlock atEnd = [completionBlock copy]; // MRC, not certain how this pans out in ARC
id fadeIn = [CCActionFadeIn actionWithDuration:1];
id fadeOut = [CCActionFadeOut actionWithDuration:1];
id delay = [CCActionDelay actionWithDuration: randomDelay];
id change = [CCActionCallBlock actionWithBlock:^{
_ballLabel.string = [NSString stringWithFormat #"%i",number}];
id complete = [CCActionCallBlock actionWithBlock:^{
atEnd();
[atEnd release]; // MRC
}];
id sequence = [CCActionSequence actions: fadeOut,delay,change,fadeIn,complete,nil];
[ballLabel runAction:sequence];
}
in GameScene
yesButton.enabled = NO;
[_hud updateBallNumber:ball withCompletion:^{
yesButton.enabled = YES;
}];