Mar 19, 2021Hunting down phantom mock instances in XCTestCases and CuckooSharing another simple lesson and insight learnt when chasing a mysterious issue In the last post, I shared a demonstration and a lesson that you always have to nil out instance variables in tearDown method in your XCTestCases. (You don’t need to go back to my last post if you…Xctest3 min read
Jan 25, 2021Hunting down phantom mock instances in XCTestCasesSharing a simple lesson and insight learnt when chasing a mysterious issue No stub for method `XXX()` In my workplace, recently we faced occasional test errors that happened only when run in test suite, even though individual test runs fine. No stub for method `XXX()` using parameters (). (NSInternalInconsistencyException) Certainly we have this Cuckoo stub…Swift4 min read
Mar 2, 2020googleimagesdownload is dead. Long live bingimagesdownload…How you can download hundreds of images via script at once + include them in your iOS project Quite some time, I have been using a very handy tool created by Hardik Vasa called googleimagesdownload . This tool allows you to download multiple images from Google at once via command…Programming8 min read
Feb 29, 2020Experiment the UILabel optimisation advice by Rony FadelThis blog post has been going viral for the past weeks in iOS community. It talks about potential iOS performance optimisations, backed by sound technical argument. One of the optimisations talks about UILabel in UITableViewCell/UICollectionViewCell. You can read the original blog for detail, but here is the gist : Internally…Swift4 min read
Published in ShopBack Tech Blog·Jan 20, 2020Implement Scratch Card UI for iOSLeveraging CoreGraphics and UIKit techniques for fun and profit In early December 2019, ShopBack GO released a Scratch Card feature that adds a little bit of fun to our users’ shopping experience. It has been a resounding success, with thousands of users scratching cards every day. Since this small feature…I OS3 min read
Published in ShopBack Tech Blog·Jul 24, 2019Move your cells left to right, up and down on iOS 13 — Part 2Two blazingly simple ways to organize your complex collection of data Recap In the first part of this tutorial-style article, we completed the first section of the demo app, using UICollectionViewCompositionLayout. In this second part of the article, we will finish the demo, and also demonstrate how to create the equivalent…I OS6 min read
Published in ShopBack Tech Blog·Jul 12, 2019Move your cells left to right, up and down on iOS 13 — Part 1Two blazingly simple ways to organize your complex collection of data If you have used our GO section of our ShopBack app, you probably might have noticed that our home screen is vertically scrollable as a whole, yet some rows on the top are horizontally scrollable. To implement this type…I OS5 min read
May 21, 2019How to store/use sensitive information in Android developmentSafely store sensitive information in the repository to share them with your colleagues and also CI/CD When you make an app that consume any resource over network, it will most likely hold sensitive information, like API key or API secret. For example, TMDb API is a handy API with which…Android7 min read
Feb 28, 2019Implement cool animation design using Shared Element Animation and ValueAnimatorChallenge As a frontend developer, you take pride in implementing whatever cool design your designer brought to you. For that, you want to prepare your mindset by making it a habit to look at cool designs and think about how to implement it. I have recently encountered a cool design in…Android App Development7 min read
Published in We’ve moved to freeCodeCamp.org/news·Feb 11, 2019How to create a consistent custom font in an iOS app with just several lines of codeAchieving a unified custom look throughout the app with simple tricks — What we want to do In iOS, there is a mechanism called UIAppearance to define an app’s global configuration. For example, you can set a consistent background color of the navigation bar with just one line : UINavigationBar.appearance().barTntColor = UIColor.blue However, if you apply the same approach to the font like this: UILabel.appearance().font = UIFont(named…I OS3 min read
