Adding a view to UIScrollview - iphone

Question

I have created a UIView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
UIImage *image2 = [UIImage imageNamed:#"pinGreen_v1.png"];
UIImage *image1 = [UIImage imageNamed:#"PinDown1.png"];
UIButton *btn1 = [[UIButton alloc]initWithFrame:CGRectMake(0, 10, 40, 40)];
[btn1 setImage:image2 forState:UIControlStateNormal];
[self addSubview:btn1];
for(int i =1; i<20; i++){
UIButton *btn2 = [[UIButton alloc]initWithFrame:CGRectMake(40 * i, 40, 40, 40)];
[btn2 setImage:image1 forState:UIControlStateNormal];
[btn2 addTarget:self
action:#selector(buttonPressed)
forControlEvents:UIControlEventTouchUpInside];
[self addSubview:btn2];
}
}
return self;
}
With the above code I am drawing images in my view. I am loading this view from my view controller. I need to put this view inside a UIScrollview. Where should I create the scroll view? In the above view or the view controller where the above view is created.
The code inside my view controller is :
DrawLineInMyClass *drawLines = [[DrawLineInMyClass alloc]initWithFrame:CGRectMake(0, 0, 320, 400)];
drawLines.backgroundColor = [UIColor blackColor];
[self.view addSubview:drawLines];
[drawLines release];
I should be able to scroll through the images inside my view.

Answer 1

I would create the the scrollview in the viewcontroller and add the view to it.
UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
scroll.pagingEnabled = YES;
DrawLineInMyClass *drawLines = [[DrawLineInMyClass alloc]initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)];
drawLines.backgroundColor = [UIColor blackColor];
[self.view addSubview:drawLines];
[scroll addSubview:drawLines];
scroll.contentSize = CGSizeMake(self.view.frame.size.width*drawLines.frame.size.width, self.view.frame.size.height);
[self.view addSubview:scroll];
[drawLines release];
[scroll release];