iPhone UIKit / Foundantion Class

//** Swiching Views **
//From FirstViewController
SecondViewController *controller = [[SecondViewController alloc] initWithNibName:@"SecondView" bundle:nil];
 controller.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
 [self presentModalViewController:controller animated:YES];
 [controller release];

//** Navigation Controller **
//Pushing the First View Controller in App Delegate File
	- (void)applicationDidFinishLaunching {
		// Create a navigation controller
		navController = [[UINavigationController alloc] init];

		// Push the first view controller on the stack
	    MainMenuController *tmpController = [[MainMenuController alloc] initWithNibName:@"MainMenuView" bundle:nil];
    	[navController pushViewController:tmpController animated:NO];
	    [tmpController release];	

		[navController pushViewController:firstViewController animated:NO];
		// Add the navigation controller’s view to the window
		[window addSubview:navController.view];
		[window makeKeyAndVisible];
	}

//Push to add a view controller
	ViewController *newView = [[ViewController alloc] initWithNibName:@"NewView" bundle:nil];
	[self.navigationController pushViewController:newView animated:YES];
	[newView release];

//Go back / remove / pop to the View before
	[self.navigationController popViewControllerAnimated:YES];
//... or pop to the Root View
	[self.navigationController popToRootViewControllerAnimated:YES];

//Set to change the entire stack of view controllers
	- (void)setViewControllers:(NSArray *)viewControllers
			animated:(BOOL)animated;

//** Message Box / Pop up messages **
// Simple
	UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"PopUp!" message: @"..." delegate:self cancelButtonTitle:@"Wooohooo!" otherButtonTitles:nil];
	[alert show];

// Extended
	NSString *msg = [[NSString alloc] initWithFormat:
		   @"This is a Alert Box Message, %d, everything went OK."
		   , 123];

	UIAlertView *alert = [[UIAlertView alloc]
						  initWithTitle:@"PopUp!"
						  message:msg
						  delegate:self
						  cancelButtonTitle:@"Wooohooo!"
						  otherButtonTitles:nil];
	[alert show];
	[alert release];

// Question Dialog
	UIAlertView *alert = [[UIAlertView alloc] init];
	[alert setTitle:@"Confirm"];
	[alert setMessage:@"Do you want to open Safari?"];
	[alert setDelegate:self];
	[alert addButtonWithTitle:@"Yes"];
	[alert addButtonWithTitle:@"No"];
	[alert show];
	[alert release];

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
	if (buttonIndex == 0) {
		// Yes Code
		NSLog(@"Yes");
	}
	else if (buttonIndex == 1) {
		// No
		NSLog(@"No");
	}
}

//** Sharing Data Between Views / Use of a Singleton **
//ClassToShare.h
@interface ClassToShare : NSObject
{
	int profileId;
}
@property (nonatomic) int profileId;

+ (ClassToShare *)sharedSingleton;
@end

//ClassToShare.m
@implementation ClassToShare
@synthesize profileId;

+ (ClassToShare *)sharedSingleton
{
	static ClassToShare *sharedSingleton;
	@synchronized(self)
	{
		if (!sharedSingleton)
			sharedSingleton = [[ClassToShare alloc] init];
		return sharedSingleton;
	}
}
@end

//How To Use
//From AppDelegate.m (don't forget to add #import "ClassToShare.h")
- (void)applicationDidFinishLaunching:(UIApplication *)application {
	ClassToShare *session = [ClassToShare sharedSingleton];
	session.profileId = 123;
	//[...]
}
//From Any View (don't forget to add #import "ClassToShare.h")
	ClassToShare *session = [ClassToShare sharedSingleton];
	session.profileId; //123

//** UITableView Table Views Controller Code / Checklist Table **/
@interface SelectFilterController : UIViewController <UITableViewDelegate, UITableViewDataSource> {
	IBOutlet UITableView *uiTableView;
	NSArray *listData;
	NSIndexPath    * selectedIndexPath;
	int selectedRow;
}
@property (nonatomic, retain) IBOutlet UITableView *uiTableView;
@property (nonatomic, retain) NSArray *listData;
@property (nonatomic, assign) int selectedRow;
@end

@implementation SelectFilterController
@synthesize listData;
- (void)viewDidLoad {
    NSArray *array = [[NSArray alloc] initWithObjects:@"One", @"Two", @"Three", nil];
    self.listData = array;
    [array release];
    [super viewDidLoad];
}
// [...]

- (void)viewDidAppear:(BOOL)animated {
	//tableViewController is a IBOutlet linked to UITableView object in the Interface Builder
	//With this you select programmatically a row in the tableview
	if(self.selectedRow > -1) {
		NSIndexPath *indexPath = [NSIndexPath indexPathForRow:self.selectedRow inSection:0];
		[self.tableViewController.delegate tableView:self.tableViewController didSelectRowAtIndexPath:indexPath];
	}
}

#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	return [self.listData count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *SimpleTableIdentifier = @"SimpleTableIdentifier";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:
                             SimpleTableIdentifier];
	if (cell == nil) {
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                       reuseIdentifier: SimpleTableIdentifier] autorelease];
    }
    NSUInteger row = [indexPath row];
    cell.textLabel.text = [listData objectAtIndex:row];
    return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	int newRow = [indexPath row];
	int oldRow;
	//check if selectedIndexPath exists
	if(selectedIndexPath != nil)
		[selectedIndexPath row];
	else
		-1;
	//select or deselect the check mark
	if (newRow != oldRow)
	{
		UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];
		newCell.accessoryType = UITableViewCellAccessoryCheckmark;

		UITableViewCell *oldCell = [tableView cellForRowAtIndexPath:selectedIndexPath];
		oldCell.accessoryType = UITableViewCellAccessoryNone;

		selectedIndexPath = indexPath;
	}
	[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
@end

//** UIWebView **
- (void)viewDidLoad {
	NSString *urlAddress = @"http://www.apple.com/uk";
	//Create a URL object.
	NSURL *url = [NSURL URLWithString:urlAddress];
	//URL Requst Object
	NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
	//Load the request in the UIWebView.
	[webView loadRequest:requestObj];
}

//** UITextView **
IBOutlet UITextView *txtNotes;

txtNotes.font = [UIFont fontWithName:@"Helvetica" size: 13];
txtNotes.text = @"Lorem ipsu ...";

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
	[theTextField resignFirstResponder];
	return YES;
}

//** UIBarButtonItem **
/*
 Image Buttons
 - Toolbar and navigation bar icons: 20 x 20 pixels.
 - Tab bar icons: 30 x 30 pixels.
 */

/*
 PNG Image with:
 - Transparent background
 - Pure white with appropriate alpha.
 - Do not include a drop shadow.
 - Use anti-aliasing.
 */
UIBarButtonItem *button1 = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"Button1.png"]
																style:UIBarButtonItemStylePlain
															   target:self
															   action:@selector(doStuff)];
/*
 PNG Full Color
 */
image = [UIImage imageNamed:@"Button2.png"];
button = [UIButton buttonWithType:UIButtonTypeCustom];
button.bounds = CGRectMake( 0, 0, image.size.width, image.size.height );
[button setImage:image forState:UIControlStateNormal];
[button addTarget:self action:@selector(myAction) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *button2 = [[UIBarButtonItem alloc] initWithCustomView:button];	

/*
 Space in between your toolbox buttons
 */
UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
																		  target:nil
																		  action:nil];

/*
 Button with image and text
 */
UIBarButtonItem *button3 = [[UIBarButtonItem alloc] initWithTitle:@"Text"
																style:UIBarButtonItemStylePlain
															   target:self
															   action:@selector(pressButton2:)];
button3.image = [UIImage imageNamed:@"Button3.png"];

 //Add buttons to the array
NSArray *items = [NSArray arrayWithObjects: flexItem, button1, flexItem, button2, flexItem, button3, flexItem, button4, flexItem, nil];
//Release buttons
[button1 release];
[button2 release];
[button3 release];
[flexItem release];

/** Table View Controller **/
//Controller
@interface TableController : UITableViewController <UITableViewDelegate, UITableViewDataSource> {
IBOutlet UITableView *uiTableView;
}

#import "MovieTableController.h"
@implementation TableController {
- (void)viewDidLoad {
    [super viewDidLoad];
    //Customizing Table View
    uiTableView.rowHeight = 75;
    uiTableView.backgroundColor = [UIColor whiteColor];
    uiTableView.separatorColor = [UIColor grayColor];
}

Tags: checklist, message box, navigation controller, switch view, uitableview, uiwebview