1 //  2 //  UITestViewController.h  3 //  UITest  4 //  5  6 #import 
     
        7  8 @interface UITestViewController : UIViewController 
      
         9 {
   10 11 } 12 13 @end 14 15 16 17 // 18 //  UITestViewController.m 19 //  UITest 20 // 21 22 #import "UITestViewController.h" 23 24 UIImageView *largeImageView; 25 26 @implementation UITestViewController 27 28 - (void)viewDidLoad {
   29     30     [super viewDidLoad]; 31 32     CGRect scrollFrame = CGRectMake(20,90,280,280); 33     UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:scrollFrame]; 34     scrollView.minimumZoomScale = 0.5; 35     scrollView.maximumZoomScale = 2.0; 36     scrollView.delegate = self; 37     38     UIImage *bigImage = [UIImage imageNamed:@"appleLogo.jpg"]; 39     largeImageView = [[UIImageView alloc] initWithImage:bigImage]; 40     41     [scrollView addSubview:largeImageView]; 42     scrollView.contentSize = largeImageView.frame.size; //important! 43     44     [self.view addSubview:scrollView]; 45     46     [scrollView release]; 47 } 48 49 - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView 50 {
   51     return largeImageView; 52 } 53 54 - (void)didReceiveMemoryWarning {
   55     // Releases the view if it doesn't have a superview. 56     [super didReceiveMemoryWarning]; 57     58     // Release any cached data, images, etc that aren't in use. 59 } 60 61 - (void)viewDidUnload {
   62     // Release any retained subviews of the main view. 63 // e.g. self.myOutlet = nil; 64 } 65 66 67 - (void)dealloc {
   68     69     [largeImageView release]; 70     71     [super dealloc]; 72 } 73 74 @end