Trigger animation in ClassA from a thouched method in ClassB

I have an UIViewController(ViewController Class) with an imageView that loads and animation(startAnimation method) which is triggered when a UIButton is clicked. The button was inserted only for testing purposes. Then I have a UIView (TocaArea Class) that register touches on a context and depending on coordinates of the movement should trigger the animation on ViewController's startAnimation method.

I'm trying:

ViewController *anim = [[ViewController alloc]init];
        [anim startAnimation];

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but even though I can build and run without errors it just doesn't triggers the animation. The UIButton triggers the animation and the gestures are being traced as it should.

Here are the files involved...

ViewController.h

#import <UIKit/UIKit.h>
@interface ViewController : UIViewController {    
    IBOutlet UIImageView *animation;
}
- (IBAction)startAnimation; // *** this triggers the method perfectly ***
@end

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ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (IBAction)startAnimation {

    [animation setAnimationRepeatCount:1];
    animation.animationDuration = 3;
    [animation startAnimating];
}

- (void)viewDidLoad
{
    int n, numeral;
    NSMutableArray *imagenesArray = [[NSMutableArray alloc] init];
    for (n=2; n<91; n++) {
        numeral=n+10000;
        NSMutableString* imagenNombre= [NSMutableString stringWithFormat:@"Overweight 0%d.png", numeral];
        UIImage *imagen = [UIImage imageNamed:imagenNombre];
        [imagenesArray addObject: imagen];
    }
    animation.animationImages=imagenesArray;
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)viewDidUnload
{

    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
    } else {
        return YES;
    }
}

@end

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TocaArea.h

#import <UIKit/UIKit.h>

@interface TocaArea : UIView {

    NSMutableArray *pointArray;

}

@property (nonatomic, retain) NSMutableArray *pointArray;

@end


**TocaArea.m**
#import "TocaArea.h"
#import "PointLocation.h"
#import "ViewController.h"

@implementation TocaArea

@synthesize pointArray;

float xi,xf,yi,yf;

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}


// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    CGContextRef ctx = UIGraphicsGetCurrentContext(); 
    [[UIColor greenColor] setStroke];
    CGContextSetLineWidth(ctx, 5);
    CGContextSetLineCap(ctx, kCGLineCapRound);

    PointLocation *tempPoint;

    CGContextBeginPath(ctx);

    for (int i=0; i<[pointArray count]; i++) {
        tempPoint = [pointArray objectAtIndex:i];
        if (i==0) {
            CGContextMoveToPoint(ctx, tempPoint.location.x, tempPoint.location.y);
            continue;
        } else {
            //CGContextAddLineToPoint(ctx, tempPoint.location.x, tempPoint.location.y);
            // ^ ^ why is this returning a "no current point" run time error? ^ ^
        }

        CGContextDrawPath(ctx, kCGPathStroke);

        CGContextSetLineWidth(ctx, 1);
        CGContextSetRGBStrokeColor(ctx, 0.6, 0.6, 0.6, 0.5);
        CGContextAddArc(ctx, tempPoint.location.x, tempPoint.location.y, 20, 0, M_PI*2, YES);
        CGContextStrokePath(ctx);

    }

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

    NSArray *allTouches = [[event allTouches] allObjects];

    if ([allTouches count] > 1)
        return;
    else {

        self.pointArray = [[NSMutableArray alloc] init];
        UITouch *touch =[allTouches objectAtIndex:0];
        PointLocation *currentLoc = [[PointLocation alloc] init];
        currentLoc.location = [touch locationInView:self];

        xi = currentLoc.location.x;
        yi = currentLoc.location.y;

        [pointArray addObject:currentLoc];

        [self setNeedsDisplay];
    }
    NSLog(@"starts touch");

}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
    NSArray *allTouches = [[event allTouches] allObjects];

    if ([allTouches count] > 1)
        return;
    else {

        UITouch *touch =[allTouches objectAtIndex:0];
        PointLocation *currentLoc = [[PointLocation alloc] init];
        currentLoc.location = [touch locationInView:self];
        [pointArray addObject:currentLoc];

        [self setNeedsDisplay];
    }

}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    NSArray *allTouches = [[event allTouches] allObjects];

    if ([allTouches count] > 1)
        return;
    else {

        UITouch *touch =[allTouches objectAtIndex:0];
        PointLocation *currentLoc = [[PointLocation alloc] init];
        currentLoc.location = [touch locationInView:self];

        float xf = currentLoc.location.x;
        float yf = currentLoc.location.y;

        float dx = xf-xi;
        float dy = yf-yi;

        NSLog(@"dx:%f  dy:%f", dx, dy);

        if (dx>50 && dx<100) {
            NSLog(@"enough dx");

            ViewController *anim = [[ViewController alloc]init];
            [anim startAnimation]; //*** this instead doesn't do anything ***

        }
        if (dy>50 && dy<100) {
            NSLog(@"enough dy");
        }

        [pointArray addObject:currentLoc];



        [self setNeedsDisplay];
    }
    NSLog(@"finger lifted");
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {

    NSArray *allTouches = [[event allTouches] allObjects];

    if ([allTouches count] > 1)
        return;
    else {
        pointArray = nil;
        [self setNeedsDisplay];
    }
}

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I have some PHP, JavaScript and Java knowledge but I'm a few weeks iOS developer wannabe. Your help is really appreciated.

Thanks!