Creating a left-arrow button (like UINavigationBar’s “back” style) on a UIToolbar

I used the following psd that I derived from http://www.teehanlax.com/blog/?p=447 http://www.chrisandtennille.com/pictures/backbutton.psd I then just created a custom UIView that I use in the customView property of the toolbar item. Works well for me. Edit: As pointed out by PrairieHippo, maralbjo found that using the following, simple code did the trick (requires custom image in bundle) … Read more

Clearing NSUserDefaults

You can remove the application’s persistent domain like this: NSString *appDomain = [[NSBundle mainBundle] bundleIdentifier]; [[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain]; In Swift 3 and later: if let bundleID = Bundle.main.bundleIdentifier { UserDefaults.standard.removePersistentDomain(forName: bundleID) } This is similar to the answer by @samvermette but is a little bit cleaner IMO.

How can we programmatically detect which iOS version is device running on? [duplicate]

Best current version, without need to deal with numeric search within NSString is to define macros (See original answer: Check iPhone iOS Version) Those macros do exist in github, see: https://github.com/carlj/CJAMacros/blob/master/CJAMacros/CJAMacros.h Like this: #define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame) #define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending) #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] … Read more

EXC_BAD_ACCESS signal received

From your description I suspect the most likely explanation is that you have some error in your memory management. You said you’ve been working on iPhone development for a few weeks, but not whether you are experienced with Objective C in general. If you’ve come from another background it can take a little while before … Read more

How do you load custom UITableViewCells from Xib files?

The right solution is this: – (void)viewDidLoad { [super viewDidLoad]; UINib *nib = [UINib nibWithNibName:@”ItemCell” bundle:nil]; [[self tableView] registerNib:nib forCellReuseIdentifier:@”ItemCell”]; } -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { // Create an instance of ItemCell PointsItemCell *cell = [tableView dequeueReusableCellWithIdentifier:@”ItemCell”]; return cell; }

What is NSLayoutConstraint “UIView-Encapsulated-Layout-Height” and how should I go about forcing it to recalculate cleanly?

Try to lower the priority of your _collapsedtextHeightConstraint to 999. That way the system supplied UIView-Encapsulated-Layout-Height constraint always takes precedence. It is based on what you return in -tableView:heightForRowAtIndexPath:. Make sure to return the right value and your own constraint and the generated one should be the same. The lower priority for your own constraint … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)