From Predicate Programming Guide: You specify and test for equality of Boolean values as illustrated in the following examples: NSPredicate *newPredicate = [NSPredicate predicateWithFormat:@”anAttribute == %@”, [NSNumber numberWithBool:aBool]]; NSPredicate *testForTrue = [NSPredicate predicateWithFormat:@”anAttribute == YES”]; You can also check out the Predicate Format String Syntax.
You can call the private method: [[UIApplication sharedApplication] performSelector:@selector(_performMemoryWarning)]; Just remember to use it on debug only, or else your app will get rejected.
This uses a combination of window.navigator.userAgent and window.navigator.standalone. It can distinguish between all four states relating to an iOS web app: safari (browser), standalone (fullscreen), uiwebview, and not iOS. Demo: http://jsfiddle.net/ThinkingStiff/6qrbn/ var standalone = window.navigator.standalone, userAgent = window.navigator.userAgent.toLowerCase(), safari = /safari/.test( userAgent ), ios = /iphone|ipod|ipad/.test( userAgent ); if( ios ) { if ( !standalone … Read more
2018 Update – Please don’t use this info ! I’m leaving the below post for reference purposes. Please read Apple’s documentation Human Interface Guidelines – Launch Screens for details on launch screens and recommendations. Thanks Drekka July 2012 – As this reply is rather old, but stills seems popular. I’ve written a blog post based … Read more
This is called an “Unwind Segue“. Unfortunately there’s no documentation for this so far except a brief mention on XCode 4.5 new features list that states: Unwind segues can allow transitioning to existing instances of scenes in a storyboard The good news is that there is a session from WWDC 2012 explaining those creatures (among … Read more
I’ve gone ahead and further customized the willDisplayCell to get a better simulation of the cell styles in the settings app. Objective-C – (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { if ([cell respondsToSelector:@selector(tintColor)]) { if (tableView == self.tableView) { CGFloat cornerRadius = 5.f; cell.backgroundColor = UIColor.clearColor; CAShapeLayer *layer = [[CAShapeLayer alloc] init]; CGMutablePathRef pathRef = … Read more
Starting from the iOS 6.0 you can do it like that: NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@”Hello. That is a test attributed string.”]; [str addAttribute:NSBackgroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(3,5)]; [str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(10,7)]; [str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@”HelveticaNeue-Bold” size:20.0] range:NSMakeRange(20, 10)]; label.attributedText = str;
Yes, it is possible to build frameworks so the user of the framework can’t see the source code. Check out these articles (I’ve successfully used the first one to create frameworks in the past — the later articles are updates to the original): http://www.drobnik.com/touch/2010/04/making-your-own-iphone-frameworks/ http://www.drobnik.com/touch/2010/05/making-your-own-iphone-frameworks-in-xcode/ http://www.drobnik.com/touch/2010/10/embedding-binary-resources/ To use the framework, your users would just drag … Read more
Yes, this is correct. Also took me a while to trust that this is indeed the right thing to do. You do realize that in this case, the override is not necessary as you don’t do more than the standard generated setter would do? Only if you add more code to setImageURLString: would you need … Read more
As Uli commented below, the proper way to do it is override layoutSubviews and layout the imageViews there. If, for some reason, you can’t subclass and override layoutSubviews, observing bounds should work, even when being kind of dirty. Even worse, there is a risk with observing – Apple does not guarantee KVO works on UIKit … Read more