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Basic UI Elements

UITextField

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UITextField *textField =[[UITextField alloc] initWithFrame:CGRectMake(24.5, 65, 270, 30)];
textField.delegate=self;
textField.textAlignment=UITextAlignmentCenter;
textField.borderStyle=UITextBorderStyleRoundedRect;
textField.placeholder=@"Usernamen";
textField.autocorrectionType=UITextAutocorrectionTypeNo;
textField.autocapitalizationType=UITextAutocapitalizationTypeNone;
[self.view addSubview: textField];

UIActionSheet

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UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"This is where the information will go"
delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil
otherButtonTitles:@"First", @"Second",@"Third",@"Cancel", nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
actionSheet.destructiveButtonIndex = 3;	// make the second button red (destructive)
[actionSheet showInView:self.view];
[actionSheet release];

Selecting a button on UIActionSheet

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- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0){
// do stuff
}
}

UISwitch

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UISwitch *mySwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
mySwitch.on=NO;
[self.view addSubview: mySwitch];

UILabel

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UILabel *usernameLabel = [[UILabel alloc] initWithFrame:CGRectZero];
usernameLabel.text=@"Personal Location Checkin";
usernameLabel.adjustsFontSizeToFitWidth=YES;
[self.contentView addSubview:usernameLabel];

UISearchBar

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UISearchBar *mySearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.bounds.size.width, 45)];
mySearchBar.delegate = self;
mySearchBar.showsCancelButton = YES;
mySearchBar.barStyle=UIBarStyleBlackOpaque;
mySearchBar.placeholder=@"Enter Name or Phone Number";
mySearchBar.keyboardType=UIKeyboardTypeNamePhonePad;
 
[self.view addSubview: mySearchBar];

UIView

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UIView *myView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
myView.backgroundColor = [UIColor blackColor];
self.view = myView;
[myView release];

UITableView

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UITableView *myTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 45, self.view.bounds.size.width, 375)];
myTableView.delegate=self;
myTableView.dataSource=self;
 
[self.view addSubview: myTableView];

Or to make a grouped table view (like in preferences)

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UITableView *settingsTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 40, self.view.bounds.size.width, 375) style:UITableViewStyleGrouped];
settingsTableView.delegate=self;
settingsTableView.dataSource=self;
[self.view addSubview:settingsTableView];

UINavigationBar
Plain no Title

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myNavBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.bounds.size.width, 45)];
[self.view addSubview:myNavBar];

Black Opaque (no title)

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myNavBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.bounds.size.width, 45)];
myNavBar.barStyle=UIBarStyleBlackOpaque;
[self.view addSubview:myNavBar];

Black Translucent (no title)

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myNavBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.bounds.size.width, 45)];
myNavBar.barStyle=UIBarStyleBlackTranslucent;
[self.view addSubview:myNavBar];

To add title and other buttons

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UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:@"Around Me"];
[myNavBar pushNavigationItem: navItem];

To add buttons with image

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myButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(action:)];
[navItem setLeftBarButtonItem: myButton];

Add button with Text

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myButton = [[UIBarButtonItem alloc] initWithTitle:@"About Us" style:UIBarButtonItemStyleBordered target:self action:@selector(action:)];
[navItem setRightBarButtonItem: myButton];

UIWebView

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myWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0.0, 45, self.view.bounds.size.width, 375)];
myWebView.delegate=self;
myWebView.scalesPageToFit=YES;
[myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.google.com"]]];
[self.view addSubview: myWebView];

UITextView

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UITextView *textView = [[[UITextView alloc] initWithFrame:frame] autorelease];
textView.textColor = [UIColor blackColor];
textView.font = [UIFont fontWithName:@"Helvetica" size:15];
textView.delegate = self;
textView.backgroundColor = [UIColor whiteColor];
 
textView.text = @"TEXT TO GO IN HERE";
[self.view addSubView:textView];

UISegmentedControl

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UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
[NSArray arrayWithObjects:
[UIImage imageNamed:@"picture1.png"],
[UIImage imageNamed:@"picture2.png"],
[UIImage imageNamed:@"picture3.png"],
[UIImage imageNamed:@"picture4.png"],
nil]];
frame = CGRectMake(	0,
0,
self.view.bounds.size.width,
35);
segmentedControl.frame = frame;
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;
segmentedControl.selectedSegmentIndex = 1;
[self.view addSubview:segmentedControl];

UIAlertView

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UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"UIAlertView" message:@"Your message goes here"
delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Button1", @"Button2", nil];
[alertView show];
[alertView release];