1 #import "UITestAppAppDelegate.h" 2 3 @implementation UITestAppAppDelegate 4 5 @synthesize window; 6 @synthesize img; 7 8 - (void) applicationDidFinishLaunching:(UIApplication *)application{ 9 CGRect frame = CGRectMake(80, 100, 80, 120); 10 img = [[UIImageView alloc] initWithFrame:frame]; 11 [img setImage:[UIImage imageNamed:@"4.png"]]; 12 [window addSubview:img]; 13 [window makeKeyAndVisible]; 14 } 15 -(IBAction) increaseSizeButtonPressed{ 16 CGRect newframe = CGRectMake(20, 50, 240, 360); 17 img = [[UIImageView alloc] initWithFrame:newframe]; 18 [img setImage:[UIImage imageNamed:@"4.png"]]; 19 img.frame = newframe; 20 [window addSubview:img]; 21 } 22 -(IBAction) decreaseSizeButtonPressed{ 23 CGRect newframe = CGRectMake(0, 0, 32, 48); 24 img = [[UIImageView alloc] initWithFrame:newframe]; 25 [img setImage:[UIImage imageNamed:@"4.png"]]; 26 [window addSubview:img]; 27 img.frame = newframe; 28 } 29 - (void)dealloc { 30 [img release]; 31 [window release]; 32 [super dealloc]; 33 } 34 35 36 @end