mundstein

// Override this method in any class to get a pretty list of 
// all methods that are being called - very useful.
// Try it on the AppDelegate for example

-(BOOL)respondsToSelector:(SEL)aSelector {
    printf("The spy says: %s\n", [NSStringFromSelector(aSelector) UTF8String]);
    return [super respondsToSelector:(aSelector)];
}

mundstein

// Make a picture browser, just like in the Photo app 
// **With only six additional lines of code!**


// in viewDidLoad:

self.tableView.transform = CGAffineTransformMakeRotation(-M_PI/2);  // turn the table 90° anti-clockwise
self.tableView.showsVerticalScrollIndicator = NO;
self.tableView.pagingEnabled = YES;

mundstein

// override this method to get a great log output
// to show how the view is resized when rotating,
// calling sizeToFit and other methods that affect the frame

- (void) setFrame:(CGRect)frame {
    [super setFrame:frame];
    NSLog(@"%@ - %@", NSStringFromSelector(_cmd), NSStringFromCGRect(frame));
}

mundstein

-(NSDate *) lastMondayBeforeDate:(NSDate*)timeStamp {
   NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
   NSDateComponents *comps = 
      [gregorian components:NSWeekdayCalendarUnit fromDate:timeStamp];
   NSInteger weekday = [comps weekday];
   weekday = weekday==1 ? 6 : weekday-2; // start with 0 on Monday rather than 1 on Sunday
   NSTimeInterval secondsSinceMondayMidnight =  
     (NSUInteger) [timeStamp timeIntervalSince1970] % 60*60*24 + 
      weekday * 60*60*24;
   return [timeStamp dateByAddingTimeInterval:-secondsSinceMondayMidnight];

mundstein

@implementation NSObject (PerformBlockAfterDelay)

- (void)performBlock:(void (^)(void))block 
          afterDelay:(NSTimeInterval)delay 
{
    block = [[block copy] autorelease];
    [self performSelector:@selector(fireBlockAfterDelay:) 
               withObject:block 
               afterDelay:delay];
}

mundstein

/* 
	 * Create a fancy shadow around the frontView.
	 *
	 * Note: UIBezierPath needed because shadows are evil. If you don't use the path, you might not
	 * not notice a difference at first, but the keen eye will (even on an iPhone 4S) observe that 
	 * the interface rotation _WILL_ lag slightly and feel less fluid than with the path.
	 */
	UIBezierPath *shadowPath = [UIBezierPath bezierPathWithRect:self.frontView.bounds];
	self.frontView.layer.masksToBounds = NO;
	self.frontView.layer.shadowColor = [UIColor blackColor].CGColor;

mundstein

//
//  ShadowButton.h

#import <Foundation/Foundation.h>

@interface ShadowButton : UIButton {
}

@end

mundstein

// The main localization class that does the hard work
-(NSString *) localized:(NSString *) key
{
   // langCode should be set as a global variable somewhere
  NSString *path = [[NSBundle mainBundle] pathForResource:langCode ofType:@"lproj"];
	
  NSBundle* languageBundle = [NSBundle bundleWithPath:path];
  return [languageBundle localizedStringForKey:key value:@"" table:nil];;
}

mundstein

- (UIImage*) maskImage:(UIImage *)im withMask:(UIImage *)maskImage {

    CGImageRef maskRef = maskImage.CGImage;

    CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef),
                                        CGImageGetHeight(maskRef),
                                        CGImageGetBitsPerComponent(maskRef),
                                        CGImageGetBitsPerPixel(maskRef),
                                        CGImageGetBytesPerRow(maskRef),
                                        CGImageGetDataProvider(maskRef), NULL, false);

mundstein

// INSERT CELL ANIMATION SNIPPET HERE
- (void)startQuivering
{
    CABasicAnimation *quiverAnim = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
    float startAngle = (-2) * M_PI/180.0;
    float stopAngle = -startAngle;
    quiverAnim.fromValue = [NSNumber numberWithFloat:startAngle];
    quiverAnim.toValue = [NSNumber numberWithFloat:3 * stopAngle];
    quiverAnim.autoreverses = YES;
    quiverAnim.duration = 0.2;