This is the very simple application. In this application we will see how to implement TextField, Label and button programmatically in iPhone. So let see how it will work.
Step 1: Open the Xcode, Create a new project using View Base application. Give the application “Example”.
Step 2: Xcode automatically creates the directory structure and adds essential frameworks to it. You can explore the directory structure to check out the content of the directory.
Step 3: We need to add one resource in resource folder. Give the resource name “anim.png”.
Step 4: Open the ExampleViewController.h file and make the following changes in the file:
@interface ExampleViewController : UIViewController {
UITextField *textFieldRounded;
UILabel *label;
UIImageView *image;
UISlider *slider;
}
@property(nonatomic,retain) UITextField *textFieldRounded;
@property(nonatomic,retain) UILabel *label;
@property(nonatomic,retain) UIImageView *image;
@property(nonatomic,retain) UISlider *slider;
@end
Step 5: In the Example.m file make the following changes in the file:
@implementation ExampleViewController
@synthesize textFieldRounded,label,image,slider;
– (void)dealloc
{
[super dealloc];
[textFieldRounded release];
[label release];
[image release];
[slider release];
}
– (void)didReceiveMemoryWarning
{
// Releases the view if it doesn’t have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren’t in use.
}
#pragma mark – View lifecycle
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
– (void)viewDidLoad
{
[super viewDidLoad];
textFieldRounded = [[UITextField alloc] initWithFrame:CGRectMake(20, 50, 280, 31)];
textFieldRounded.borderStyle = UITextBorderStyleRoundedRect;
textFieldRounded.textColor = [UIColor blackColor];
textFieldRounded.font = [UIFont systemFontOfSize:17.0];
textFieldRounded.placeholder = @"Enter Your name"; //place holder
textFieldRounded.backgroundColor = [UIColor whiteColor];
textFieldRounded.autocorrectionType = UITextAutocorrectionTypeNo;
textFieldRounded.backgroundColor = [UIColor clearColor];
textFieldRounded.keyboardType = UIKeyboardTypeDefault;
textFieldRounded.returnKeyType = UIReturnKeyDone;
textFieldRounded.clearButtonMode = UITextFieldViewModeWhileEditing;
[self.view addSubview:textFieldRounded];
textFieldRounded.delegate = self;
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self
action:@selector(buttonPressed:)
forControlEvents:UIControlEventTouchDown];
[button setTitle:@"Button" forState:UIControlStateNormal];
button.frame = CGRectMake(20, 108, 97, 37);
[self.view addSubview:button];
label = [[UILabel alloc] initWithFrame:CGRectMake(40, 243, 240, 21)];
label.backgroundColor = [UIColor clearColor];
label.textAlignment = UITextAlignmentCenter; // UITextAlignmentCenter, UITextAlignmentLeft
label.text = @"Label";
[self.view addSubview:label];
CGRect myImageRect = CGRectMake(40.0f, 190.0f, 240.0f, 128.0f);
image = [[UIImageView alloc] initWithFrame:myImageRect];
[image setImage:[UIImage imageNamed:@"anim.png"]];
image.backgroundColor = [UIColor clearColor];
image.opaque = YES;
image.alpha = 0;
[self.view addSubview:image];
[image release];
CGRect frame = CGRectMake(18.0, 348.0, 284.0, 23.0);
slider = [[UISlider alloc] initWithFrame:frame];
[slider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
[slider setBackgroundColor:[UIColor clearColor]];
slider.continuous = YES;
slider.value = 0.0;
[self.view addSubview:slider];
}
–(IBAction) sliderAction:(id) sender{
image.alpha = slider.value;
}
–(IBAction) buttonPressed:(id) sender{
[textFieldRounded resignFirstResponder];
label.text = textFieldRounded.text;
}
– (BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}
– (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
– (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
@end
Step 6: Now compile and run the application on the simulator.
You can Download SourceCode from here Example
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