Filip Němeček Blog

Using WKWebView in headless mode <p>At first this can seem super easy.

How to quickly remove duplicates from Array & keep order <h2>The problem</h2> <p>Let’s say you have array of strings and want to remove all duplicate items.

How to add badge to UIBarButtonItem <p>In this tutorial I am going to show you how to add badge with count to any <code>UIBarButtonItem</code>.

How to use EKCalendarChooser in Swift to let user select calendar in iOS <p>iOS offers great way to work with calendar events and one part is <code>EKCalendarChooser</code> from the <code>Event Kit</code> framework.

How to let users send feedback using email app of their choice in iOS <p>If you have an app on the App Store chances are you also have option in settings possibly to let users send you feedback via email.

How to create reusable UIView with .XIB file for easy design <p>Custom <code>UIView</code> subclasses are huge productivity win.

How to display files like PDFs, documents, GIFs, images and more in your app <p>If you need to let user view various files inside your app, iOS offers pretty nice solution called <a href="https://developer.apple.com/documentation/quicklook/qlpreviewcontr…

How to generate image previews / thumbnails of various files <p>Quick Look framework powers file previews across iOS and you can use its power to generate thumbnail images for all kinds of files.

Advanced string comparison and sorting in Swift <p>I bet you are well aware of the <code>contains()</code> method available in Swift to check if one string well.. contains.. substring 🙂 We can also readily use methods <code>hasPrefix()</code> and <code>…

Few book recommendations that will make you a better developer <p><em>Before we get started I just want to point out that there are not sneaky affiliate links in this post, it is not paid promotion and I bought all the books mentioned with my own money.

How to temporarily cover whole screen of your application <p>In this short tutorial we will go over how to temporarily cover the entire screen of your app with custom <code>UIView</code>.

Saving files into user’s iCloud Drive using FileManager <p>As a part of the CloudKit framework your iOS app can save and read files from user’s iCloud Drive.

How to implement swipe to delete action with custom icon in TableView <p>Thorough iOS the pattern of deleting items with right to left swipe is present on almost every step.

How to use EKEventEditViewController in Swift to let user save event to iOS calendar <p>Recently I needed to save event to user's system calendar on iOS.

Four tips to level up your Swift <p>Swift has number of advanced features that can help you write more concise and prettier code.

How to open target="_blank" links in WKWebView in iOS <p>If you ever worked with <code>WKWebView</code> in your iOS application you may have noticed, that some links just don’t work.