So you are trying to send instant message to parent iPhone app and still receiving “Payload could not be delivered”? This happens only if one of those two […]
iOS
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Swift: How to consume SOAP using Alamofire?
Well, SOAP is kinda old. But if for some reason you need to use it, here is how. 1. Create empty “Single View” project, you can call it […]
iOS
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Swift 2.2: What is the difference between .map and .flatMap?
When you dive into .map and .flatMap ocean, you may be confused what is the difference. Consider such example: let arr = [1,2,3,4,5,6] print(arr.map{ return String($0 * 2)+”x” }) […]
iOS
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Testing with Swift 2.x
Testing is good practice, but sometimes you may get into trap. Opposite to Objective-C, in Swift 2.x you don’t need to add each file to your test target, […]
iOS
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Swift: What “Invalid predicate: nil RHS” means and how to handle?
Sooner or later you will face with “Invalid predicate: nil RHS”. What does it mean? Fortunately solution is very simple, somewhere in your code, you are using NSPredicate […]
iOS
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Swift: How to move whole screen up when keyboard shows?
I pretty sure all of you know how to do it in Objective C, but in Swift 2.x this is even simpler. First you need to subscribe to […]
iOS
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UINavigationItem back button in UIViewController hell
Sooner or later you will face with changing back button title in navigation bar. This may seem simple. But after few hours trying to change this damn text, […]
iOS
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How to proper use UIImage with tint color?
This can seem trivial, but I saw lot of people complaining about not working tint color when using UIImage. Here is the proper way: UIImageView *imageView = [[UIImageView […]
iOS
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Sharing data between UIViewControllers
If you are new to iOS programming this may take you a while to found out. But I’m here to help so will give you ready to use […]