TheCodeEngine

UIButton *myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
myButton.frame = CGRectMake(20, 20, 200, 44); // position in the parent view and set the size of the button
[myButton setTitle:@"Click Me!" forState:UIControlStateNormal];
// add targets and actions
[myButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
// add to a view
[self.view addSubview:myButton];

TheCodeEngine

float angle = 90 * (3.14 / 100);
CGAffineTransform transform = CGAffineTransformMakeRotation(angle);
button.transform = transform;

TheCodeEngine

CGSize textSize = [[label text] sizeWithFont:[label font]];

TheCodeEngine

CATransition *animation = [CATransition animation];
animation.delegate = self;
animation.duration = 0.5f;
animation.type = kCATransitionMoveIn;
animation.subtype = kCATransitionFromTop;
    
[self.view.layer addAnimation:animation forKey:@"animation"];

TheCodeEngine

typedef void (^AnimationBlock)(void);
typedef void (^CompletionBlock)(BOOL finished);

//
// AnimationBlock
AnimationBlock first = ^(void){
    self.transform = CGAffineTransformMakeScale(0.5f, 0.5f);
};
AnimationBlock second = ^(void){
    self.transform = CGAffineTransformMakeScale(1.15f, 1.15f);

TheCodeEngine

- (UIImage*) buildSwatch: (int) aBrightness
{
    CGRect rect = CGRectMake(0.0f, 0.0f, 30.0f, 30.0f);
    UIGraphicsBeginImageContext(rect.size);
    
    UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:4.0f];
    [[[UIColor blackColor] colorWithAlphaComponent:(float) aBrightness / 10.0f] set];
    [path fill];

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

TheCodeEngine

#import <QuartzCore/QuartzCore.h>
[v.layer setCornerRadius:25.0f];
[v.layer setMasksToBounds:YES];

TheCodeEngine

CGFloat startDeg = 0;
CGFloat endDeg = 360;
CGContextAddArc(context, 100.0, 100.0, 90.0, (startDeg-90)*M_PI/180.0, (endDeg-90)*M_PI/180.0, 0);

TheCodeEngine

- (BOOL)shouldAutorotate {
    return YES;
}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    // Move the Labels into place
    switch ([UIDevice currentDevice].orientation) {
        case UIDeviceOrientationLandscapeLeft:
        case UIDeviceOrientationLandscapeRight:
        {

TheCodeEngine

clock.layer.shadowColor = [[UIColor redColor] CGColor];
clock.layer.shadowRadius = 4.0f;
clock.layer.shadowOpacity = 0.9f;
clock.layer.shadowOffset = CGSizeZero;
clock.layer.masksToBounds = NO;