Tag Archives: UIViewController

Simple Alert with two buttons in iOS Swift with callback

By | December 1, 2017

Dear Friends, Today I will show you how to create a simple alert with two buttons and how to write a callback for each button. The code is simple. Its written for Swift 3. Send your comments to coderzheaven@gmail.com

Using NSOperationQueue in iOS to do Serial/Concurrent Operations.

By | May 7, 2016

NSOperationQueue is used to do scheduled operations in iOS. You can customize NSOperationQueue to do Concurrent/Serial operations. You can set NSOperationQueue maxConcurrentOperationCount to tell it to do how many operations to execute at a time. Lets see this with an example [Swift Version] In the above example, we set maxConcurrentOperationCount to 1, telling it to… Read More »