A developer's search for code greatness
When you’re building an app you usually need some values to remain the same for the whole runtime of the app. Instead of using those values everywhere inside your app it is better to define a constant and use the constant instead. Continue reading Constants in Objective C
In part one of this tutorial we’ve seen how to display in-line date picker in a table view with dynamic cells. In this second part we are going to see how to do this for static cells. We will build Continue reading iOS 7 in-line UIDatePicker – Part 2
One of the new features in iOS 7 is the in-line UIDatePicker. You might have noticed in the Calendar app or in the Reminder app that when you want to select a date for your event, instead of seeing the Continue reading iOS 7 in-line UIDatePicker – Part 1
Every app has to work with some data and this data is usually structured in custom classes. A music app will probably have a Song class, a chat app will have a Friend class, a recipe app will have a Continue reading How to sort NSArray with custom objects in it
iOS 7 has a very good adoption rate, however you might still want to support people that are running older versions of iOS. You can load different storyboards or xib files, different launch screens and handle API differences. You can Continue reading How to check iOS version at runtime
Let’s assume we have these strings: NSString *firstString = @”This is the start”; NSString *secondString = @”of a great”; NSString *thirdString = @” sentence that ends here”; The easiest way to concatenate two strings is by using the stringByAppendingString: method. Continue reading How to concatenate strings
When the user taps in a text field, that text field becomes the first responder and automatically asks the system to display the associated keyboard. The appearance of the keyboard might obscure portions of the UI that you would like Continue reading How to make UITextField move up when keyboard is present
You might have noticed that when you insert an IBOutlet directly from Interface Builder you can select whether to have it as a weak or strong property. After a little search in the Apple developer’s library I have found when Continue reading Should IBOutlets be weak or strong?
When you are dealing with UITextFields one thing you need to handle is the showing and hiding of the keyboard. To show the keyboard all you need to do is make your text field the first responder like this: [self.myTextField Continue reading How to manage the keyboard for a UITextField
When you declare a NSString property it is best to use copy instead of strong. In fact this is true for any immutable class that conforms to the NSCopying protocol like NSNumber, NSArray, NSSet and others. All these classes I Continue reading Use copy for NSString properties