interactive · design · studio

#import <UIKit/UIKit.h>
 
@class MultiviewViewController;
 
@interface MultiviewAppDelegate : NSObject <UIApplicationDelegate> {
       UIWindow *window;
       MultiviewViewController *viewController;
}
 
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet MultiviewViewController *viewController;
 
-(void) displayView:(int)intNewView;
 
@end

#import "MultiviewAppDelegate.h"
#import "MultiviewViewController.h"
 
@implementation MultiviewAppDelegate
 
@synthesize window;
@synthesize viewController;
 
-(void) displayView:(int)intNewView {
       [viewController displayView:intNewView];
}
 
- (void)applicationDidFinishLaunching:(UIApplication *)application {
       [window addSubview:viewController.view];
       [window makeKeyAndVisible];
}
 
 
- (void)dealloc {
       [viewController release];
       [window release];
       [super dealloc];
}
 
 
@end

#import <UIKit/UIKit.h>
 
@interface MultiviewViewController : UIViewController {
}
 
- (void) displayView:(int)intNewView;
 
@end

#import "MultiviewViewController.h"
// you have to import the header files for
// any views that this parent controls
#import "View01.h"
#import "View02.h"
 
@implementation MultiviewViewController
 
UIViewController  *currentView;
 
- (void) displayView:(int)intNewView {
       NSLog(@"%i", intNewView);
       [currentView.view removeFromSuperview];
       [currentView release];
       switch (intNewView) {
               case 1:
                       currentView = [[View01 alloc] init];
                       break;
               case 2:
                       currentView = [[View02 alloc] init];
                       break;
       }
 
       [self.view addSubview:currentView.view];
}
 
 
- (void)viewDidLoad {
       // display Welcome screen
       currentView = [[View01 alloc] init];
       [self.view addSubview:currentView.view];
 
   [super viewDidLoad];
}
 
- (void)didReceiveMemoryWarning {
   [super didReceiveMemoryWarning]; // Releases the view if it
doesn't have a superview
   // Release anything that's not essential, such as cached data
}
 
 
- (void)dealloc {
       [currentView release];
   [super dealloc];
}
 
@end

#import <UIKit/UIKit.h>
 
@interface View01 : UIViewController {
 
}
 
@end

#import "View01.h"
#import "MultiviewAppDelegate.h"
 
@implementation View01
 
- (void)goToTwo {
       MultiviewAppDelegate *appDelegate = [[UIApplication
sharedApplication] delegate];
       [appDelegate displayView:2];
}
 
- (void)viewDidLoad {
       NSLog(@"load01");
 
       UIButton *btnOne = [UIButton buttonWithType:UIButtonTypeRoundedRect];
       btnOne.frame = CGRectMake(40, 40, 240, 30);
       [btnOne setTitle:@"One!" forState:UIControlStateNormal];
       [btnOne addTarget:self action:@selector(goToTwo)
forControlEvents:UIControlEventTouchUpInside];
       [self.view addSubview:btnOne];
 
   [super viewDidLoad];
}
 
- (void)didReceiveMemoryWarning {
   [super didReceiveMemoryWarning]; // Releases the view if it
doesn't have a superview
   // Release anything that's not essential, such as cached data
}
 
 
- (void)dealloc {
       NSLog(@"dealloc01");
   [super dealloc];
}
 
 
@end

#import <UIKit/UIKit.h>
 
@interface View02 : UIViewController {
 
}
 
@end

#import "View02.h"
#import "MultiviewAppDelegate.h"
 
@implementation View02
 
- (void)goToOne {
       MultiviewAppDelegate *appDelegate = [[UIApplication
sharedApplication] delegate];
       [appDelegate displayView:1];
}
 
- (void)viewDidLoad {
       NSLog(@"load02");
 
       UIButton *btnTwo = [UIButton buttonWithType:UIButtonTypeRoundedRect];
       btnTwo.frame = CGRectMake(40, 40, 240, 30);
       [btnTwo setTitle:@"Two!" forState:UIControlStateNormal];
       [btnTwo addTarget:self action:@selector(goToOne)
forControlEvents:UIControlEventTouchUpInside];
       [self.view addSubview:btnTwo];
 
   [super viewDidLoad];
}
 
- (void)didReceiveMemoryWarning {
   [super didReceiveMemoryWarning]; // Releases the view if it
doesn't have a superview
   // Release anything that's not essential, such as cached data
}
 
 
- (void)dealloc {
       NSLog(@"dealloc02");
   [super dealloc];
}
 
 
@end