【performSelector】ボタンを押し続けるとイメージが動き、離すと動きが止まる、には

Press-and-hold-to-make-Image-move

##Press and hold to make Image move

With below code, you have to push 3 seconds to move _imageView, and then the image begins moving, and when you release the button, the image stops.

![ss](http://farm8.staticflickr.com/7264/7758110866_f2d3a47f04_o.png)

	- (IBAction)pushToMove:(id)sender {
	    [self performSelector:@selector(move) withObject:nil afterDelay:3.0];
	}
	
	- (void)move
	{
	    _nt = [NSTimer scheduledTimerWithTimeInterval:0.1
	                                                   target:self
	                                                 selector:@selector(goRight)
	                                                 userInfo:nil
	                                                  repeats:YES];
	}
	
	- (void)goRight
	{
	    _imageView.frame = CGRectMake(_imageView.frame.origin.x + 10, _imageView.frame.origin.y,
	                                  _imageView.frame.size.width, _imageView.frame.size.height);
	}
	
	- (IBAction)stop
	{
	    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(move) object:nil];
	    [_nt invalidate];
	}

I put this sample project to GitHub. You can download and just run it.

<https://github.com/weed/p120804_ImageMoveDuringPushButton>