Sven Bautz bleft

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Germany
https://www.5bz.de

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bleft / gist:5134145

Created March 11, 2013 13:17

switch background color responding to the BOOL loggedIn.

self.view.backgroundColor = loggedIn ? [UIColor greenColor] : [UIColor redColor];

bleft / gist:5590171

Created May 16, 2013 08:05

pulsing animation. Put two UIImageViews on a view for low and highlighted. Animate the highlighted for pulsing. To stop animation remove animation from layer. Needs QuartzCore.Framework.

	- (void)startAnimation
	{
	self.imageViewHigh.hidden = NO;
	CABasicAnimation *theAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
	theAnimation.duration = 1.0f;
	theAnimation.repeatCount = HUGE_VALF;
	theAnimation.autoreverses = YES;
	theAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
	theAnimation.toValue = [NSNumber numberWithFloat:1.0f];
	[self.imageViewHigh.layer addAnimation:theAnimation forKey:@"animateOpacity"];

bleft / gist:5926865

Created July 4, 2013 11:12

UIScrollView and UIPageControl set Page scrollView, set Page on Page controller

	static CGSize scrollSize; // set on viewDidLoad

	- (CGRect)frameForPosition:(int)pos
	{
	float x = pos * scrollSize.width;
	float y = 0;
	float width = scrollSize.width;
	float height = scrollSize.height;

	return CGRectMake (x, y, width, height);

bleft / gist:7038550

Created October 18, 2013 08:47

git alias for better log

git config --global alias.lg "log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr)%Creset' --abbrev-commit --date=relative"

bleft / NSMutableString+Utils.m

Created March 11, 2014 12:16

NSMutableString: appendStringOrEmpty

	- (void)appendStringOrEmpty:(NSString*)string{
	if (string) {
	[self appendString:string];
	} else {
	[self appendString:@""];
	}
	}

bleft / imageFromView.m

Last active August 29, 2015 13:59

UIImage from View

	+ (UIImage )imageFromView:(UIView )view
	{
	if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
	if ([[UIScreen mainScreen] scale] == 2.0) {
	UIGraphicsBeginImageContextWithOptions(view.bounds.size, NO, 2.0);
	} else {
	UIGraphicsBeginImageContextWithOptions(view.bounds.size, NO, 1.0);
	}
	} else {
	UIGraphicsBeginImageContextWithOptions(view.bounds.size, NO, 1.0);

bleft / sharedInstance.m

Created July 3, 2014 12:33

create singleton dispatch_once_t

	+ (instancetype)sharedInstance
	{
	static dispatch_once_t once;
	static id sharedInstance;
	dispatch_once(&once, ^{
	sharedInstance = [[self alloc] init];
	});
	return sharedInstance;
	}

bleft / maxNumbersOfLines.m

Created July 22, 2014 14:40

set maximum number of lines on UITextView

	// the following snippet sets the number of lines to 1
	myTextView.attributedText = [[NSAttributedStringalloc] initWithString:@"my too long text"];
	myTextView.textContainer.maximumNumberOfLines = 1;
	myTextView.textContainer.lineBreakMode = NSLineBreakByTruncatingTail;

bleft / gist:c9ae29f3cd51ea439c63

Created September 24, 2014 14:34

colors in terminal: .bash_profile

	export CLICOLOR=1
	export LSCOLORS=ExFxBxDxCxegedabagacad

bleft / roundView.swift

Created October 17, 2014 10:46

Make round UIView

	let layer = view.layer
	layer.cornerRadius = CGRectGetWidth(mapView.bounds) / 2
	layer.borderWidth = 1
	layer.masksToBounds = true

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