drawing different quartz 2d

Question

Hello,

I'm trying to make a small application or demo thats a tab bar application. Each bar item loads in a new view. I've created a quartzView class that is called on by the controller:

- (void)viewDidLoad {

    quartzView *drawingView = [[quartzView alloc] initWithFrame:CGRectMake(0,0,320,480)];
    [self.view addSubview:drawingView];

    [super viewDidLoad];
}

From my understanding, the drawRect method must be triggered in order to render the object and to draw it. This is my quartzView class:

#import "quartzView.h"

@implementation quartzView

#pragma mark shapes

// Blue Circle
- (void)drawRect:(CGRect)rect 
{
    NSLog(@"Trying to draw...");

    CGContextRef ctx = UIGraphicsGetCurrentContext(); //get the current context
    CGContextClearRect(ctx, rect); //clear off the screen

    //draw a red square
    CGContextSetRGBFillColor(ctx, 255, 0, 0, 1); 
    CGContextFillRect(ctx, CGRectMake(10, 10, 50, 50));

}


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

- (void)dealloc {
    [super dealloc];
}


@end

So how would I go about to say,

• if the view is view one, draw a square
• if it's view two draw a circle.

And so on.