iPhone Programming - How to create a 'hold down' button

An Xcode 4 tutorial teaching you how to create a "hold down" button so when they are "holding" it down the action carries on and when they let go the action stops.

Main Code:

In the .h:
IBOutlet UIImageView *image;
NSTimer *goUp;
NSTimer *goDown;
NSTimer *goLeft;
NSTimer *goRight;

}

-(IBAction)down; //Conected to "touch down"
-(IBAction)stopDown; //Connected tp "touchUpInside"
-(IBAction)up; //Conected to "touch down"
-(IBAction)stopUp; //Connected tp "touchUpInside"
-(IBAction)left; //Conected to "touch down"
-(IBAction)stopLeft; //Connected tp "touchUpInside"
-(IBAction)right; //Conected to "touch down"
-(IBAction)stopRight; //Connected tp "touchUpInside"

-(void)goDown;
-(void)goUp;
-(void)goLeft;
-(void)goRight;

In the .m
-(IBAction)down {
if (goDown == nil) {
}
}

-(IBAction)stopDown {
[goDown invalidate];
goDown = nil;
}

-(IBAction)up {
if (goUp == nil) {
}
}

-(IBAction)stopUp {
[goUp invalidate];
goUp = nil;
}

-(IBAction)left {
if (goLeft == nil) {
}
}

-(IBAction)stopLeft {
[goLeft invalidate];
goLeft = nil;
}

-(IBAction)right {
if (goRight == nil) {
}
}

-(IBAction)stopRight {
[goRight invalidate];
goRight = nil;
}

-(void)goDown {
}

-(void)goUp {
}

-(void)goLeft {
}

-(void)goRight {
}

[CoachCasson]

I wanted to figure out how to do this earlier this year, but couldn't and the tutorials I found were no help at all - thanks to you Milmer I have now updated one of my apps and the user interface is transformed! Much easier to use and less frustrating. Cheers!

Subscribed

[HidingInMyRoom]

thanks so much! i used this to make a move left and right button for my platforming game :DD:D:D befoe i was using touchesbegan and touches ended to move but i prefer arrow buttons on one side instead

[derrickmu]

You are a saint and have gained another subscriber. THANK YOU VERY

[sportsaddict]

Thank you very much! This video helped me a lot!

[mansports]

great job, you are the best
would it be easy to make it so that the image stops at the end of the view
thanks in advance

[pashapa]

it says on the line [goDown invalidate]; that goDown has not been declared