AnimatedUIView.h

//
//  AnimatedView.h
//
//  Created by Anthony Mattox on 6/18/12.
//  Copyright (c) 2012 Friends of The Web. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ParticleView : UIView {
    id displayLink;
    BOOL animating;
}

@end

AnimatedUIView.m

//
//  AnimatedView.m
//
//  Created by Anthony Mattox on 6/18/12.
//  Copyright (c) 2012 Friends of The Web. All rights reserved.
//

#import "ParticleView.h"

#import <QuartzCore/QuartzCore.h>

@implementation ParticleView

- (id) initWithCoder:(NSCoder *) aDecoder {
    self = [super initWithCoder:aDecoder];
    if (self) {
        animating = NO;
    }
    return self;
}

- (void) awakeFromNib {
}




#pragma mark - Animating

- (void) startAnimating {
    if (!animating) {
        displayLink = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget:self selector: @selector(setNeedsDisplay)];
        [displayLink setFrameInterval:1];
        [displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
        animating = YES;
    }
}

- (void) stopAnimating {
    if (animating) {
        [displayLink invalidate];
        displayLink = nil;
        animating = NO;
    }
}

- (void)drawRect:(CGRect)rect {
    // Drawing Code
}

@end