Piotrek Sobkowski psobko

Programmer (M) Des: PSOBKO Incept Date: 00 OCT, 1982 Func: Mobile Software Engineer Phys: LEV.C Ment:LEV.A

psobko / ScreenCapture.m

Last active December 10, 2015 07:38

Take a screenshot of a given view and optionally crop it.

	+(UIImage)TakeScreenshotOfView:(UIView)view Cropping:(CGRect)dimensions
	{
	CGFloat scale = 1.0f;

	if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)])
	scale = [[UIScreen mainScreen] scale];

	UIGraphicsBeginImageContextWithOptions(view.bounds.size, NO, scale);

	[view.layer renderInContext:UIGraphicsGetCurrentContext()];

psobko / resizeFBLogin

Created December 29, 2012 05:16

Resize FBLoginView on iOS SDK

	- (void)resizeLoginView:(FBLoginView*)loginview
	{
	for(UIView * view in loginview.subviews)
	{
	if([view isKindOfClass:[UILabel class]])
	{
	view.frame = CGRectMake( view.frame.origin.x-23, view.frame.origin.y, view.frame.size.width/2, view.frame.size.height /2);
	}
	else
	{

psobko / UIViewPositioning.m

Last active December 10, 2015 08:38

UIView Positioning

	//center horizontally or vertically
	subView.center = CGPointMake(parentView.frame.size.width / 2, parentView.frame.size.height / 2);

	//center horizontally + vertically
	subView.center = [parentView convertPoint:parentView.center fromView:parentView.superview];

psobko / AddErrorBox

Created June 16, 2013 03:58

Draws a box around a view and then animates it to grow vertically. Originally I was going to use this to display errors underneath UITexFields.

	-(void)addBox
	{
	self.layer.masksToBounds = NO;
	CALayer *errorLayer;
	errorLayer = [CALayer layer];
	errorLayer.backgroundColor = [UIColor blueColor].CGColor;
	errorLayer.frame = CGRectMake(0,0, self.frame.size.width, self.frame.size.height);
	errorLayer.cornerRadius = 0.0f;
	CALayer *bgLayer = [CALayer layer];
	bgLayer.frame = errorLayer.frame;

psobko / UIScrollView Max Bounce

Created August 28, 2013 16:15

Control how far a UIScrollView can bounce

	- (void)scrollViewDidScroll:(UIScrollView *)scrollView
	{
	if (scrollView.contentOffset.y < -50)
	{
	scrollView.contentOffset = CGPointMake(0, -50);
	}
	}

psobko / UIScrollView Detect Bounce Direction

Created August 28, 2013 16:17

Detect which direction a UIScrollView is bouncing

	-(void)scrollViewDidScroll:(UIScrollView *)scrollView
	{
	float scrollOffsetY = scrollView.contentOffset.y;

	if(scrollOffsetY < 0)
	{
	//Pulling down
	}
	else if(scrollOffsetY > scrollView.contentSize.height - scrollView.frame.size.height)
	{

psobko / Resign FirstResponder From Anywhere

Created August 30, 2013 21:07

[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];

psobko / gist:6705823

Last active December 23, 2015 22:49

Color a word in NSAttriburedString

	//Modified from http://stackoverflow.com/questions/8533691/how-to-get-all-nsrange-of-a-particular-character-in-a-nsstring

	- (NSMutableAttributedString) setColor:(UIColor)color word:(NSString)word inText:(NSMutableAttributedString)mutableAttributedString {

	NSUInteger count = 0, length = [mutableAttributedString length];
	NSRange range = NSMakeRange(0, length);

	while(range.location != NSNotFound)
	{
	range = [[mutableAttributedString string] rangeOfString:word options:0 range:range];

psobko / gist:6720079

Created September 26, 2013 20:30

Detect when back is tapped on navigation controller without subclassing

	//http://stackoverflow.com/questions/12748911/do-things-when-back-button-is-pressed

	-(void)viewWillDisappear:(BOOL)animated {
	NSUInteger ind = [[self.navigationController viewControllers] indexOfObject:self];
	if (ind == NSNotFound) {
	// do something, we're coming off the stack.
	}
	}

psobko / 0_reuse_code.js

Created September 27, 2013 21:26

Here are some things you can do with Gists in GistBox.

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console