iOS Programming, Getting Started with Iphone app development, UIViewNavigation app demo

1. iOS Programming
Objective C + iOS

2. Profile
Ankit Desai
 Ph.D. Scholar, IET, Ahmedabad University
 Education: M. Tech. CE, B.E. I. T.
 Experience: 7.5 Years (Academic and Research)
 Research Interest: IoT, Big Data Analytics,
Machine Learning, Data Mining.

3. Navigation of Views
 Drag a button on .xib (first)
 Drag a UITextField on .xib file
 Create a IBAction for button and a property of
UIText Field
- (IBAction)shownext:(id)sender;
@property (retain, nonatomic) IBOutlet UITextField
*txtname;

4. Connect
@synthesize txtname; in .m file.

5. Modify View Did Load
method
- (void)viewDidLoad
{
[super viewDidLoad];
self.title=@"Home";
}

6. Implement IBAction
- (IBAction)shownext:(id)sender {
NextViewController *next=[[NextViewController
alloc]initWithNibName:@"NextViewController" bundle:nil];
next.strname=txtname.text;
[self.navigationController pushViewController:next animated:YES];
}
#import "NextViewController.h"

7. Add NextViewController
Project -> right click -> add new file

8. Select Type
Select Objective C class -> Next

9. Add NextViewController
Class with xib
ClassName -> NextViewController -> UIViewController -> .nib

10. Open nib file
 Drag a label, two buttons (next, back)
 Create a property for label, IBAction for back
and next button

11. Connect as follow
@property(retain,nonatomic) NSString *strname; //an extra property to be
created

12. @synthesize
 @synthesize lblname,strname;
• Modify viewDidLoad of NextViewController
- (void)viewDidLoad
{
[super viewDidLoad];
lblname.text=strname;
}

13. Implement both IBActions
- (IBAction)backview:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
- (IBAction)nextview:(id)sender {
thrdViewController *thrd=[[thrdViewController
alloc]initWithNibName:@"thrdViewController" bundle:nil];
[self.navigationController pushViewController:thrd animated:YES];
}
#import "thrdViewController.h"

14. Add Third View Controller

15. Select

16. Rename and Subclass

17. Carefully modify
AppDelegate.h
@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) ViewController
*viewController;
@property (retain,nonatomic)UINavigationController
*unc;

18. @synthesize
 @synthesize unc;

19. - (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen]
bounds]] autorelease];
// Override point for customization after application launch.
self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController"
bundle:nil] autorelease];
unc=[[UINavigationController
alloc]initWithRootViewController:self.viewController];
self.window.rootViewController = unc;
[self.window makeKeyAndVisible];
return YES;
}

20. Output

21. Output

22. Thank you
 For further communication or queries:
 Contact me:
 desaiankitb@gmail.com
 www.fb.com/desaiankitb