My Dev Notes

Setting Up Travis CI With Fastlane for iOS Project

Travis CI is a service, providing machines, to help build your app, test, deploy, and more.

Guide to Creating UIViewController Without Storyboard

This is a guide on creating your custom UIViewController with code, without any storyboard/nibs/xibs. You may also be interested in reading guide to creating custom UIView.

Localization - Fallback to Base Language

This post explains how iOS determines the language to use in an app, and how Apple fallback to the next-best default language when necessary.

UI Testing With BrowserStack Cloud Devices

This guide is on using BrowserStack to run UI Tests on cloud devices.

Developer Guide to Support iPhone X

iPhone X introduced The Notch, The Home Indicator, Safe Area, and a different resolution form factor..

Guide to Universal Links

Universal links are HTTP links that open your app, instead of the website in Safari.

Guide to Creating Custom UIView

This is a guide to creating custom UIView using Auto Layout, without Nib/Storyboard, and in Swift 4.

Adding Playground to an Existing Project

UPDATE APRIL 2018:

Steps to Create Swift Framework + Cocoapods

1. Create framework project

Guide to Using Codable Struct for JSON

Codable is a new feature introduced along with Swfit 4 for encoding and decoding models easily, making third party libraries such as SwiftyJSON and Unbox obsolete. It is part of...

Migrating to Swift 4 and @objc

Swift’s official migration guide gives a good overview.

How to Change iOS App Icon Programmatically (iOS 10.3)

Changing the app icon is just 1 line of code with setAlternateIconName, but there are many pitfalls, and the lack of guide on how to do it.

How Oracle screwed me for 2 months with an UNDERSCORE

tldr; I was integrating Oracle’s mobile push SDK and was stuck for 2 months. Turned out they have an embarassing bug involving an underscore! Oracle’s Responsys/PushIO proved ri...

WWDC 2017 - What's New in Foundation

Summary of what’s new in Foundation, Swift 4, from session 212. Tip: You can download WWDC videos easily with wwdc-dl.

How to Use Git Bisect to Find the First Bad Commit

Git has a very powerful command for developers to systematically find the commit that introduce a bug.

What Steve Jobs Thinks of React Native

Adobe announced they are killing Flash in 2020.

Backing Up Photos Library and Handling Corrupted Files Error -36

I was backing up my Photos Library, a huge 500 GB Photos Library.photoslibrary, and copying the file to my external drive, it had this error:

Tip: Debugging UI Calls in Background Threads

We all know UI calls have to be run in the main thread.

Creating a Autoresizing UITableView Programmatically

This is a common scenario we will use as an example: Creating a table view that display images of different sizes, loading the images from the network and resizing the table vie...

Xcode 8 File Templates

The secret feature of Xcode

Guide to watchOS Development

A guide for watchOS 3, because the watch app programming guide is not obvious.

Access Levels in Swift

Guide to Booting Up macOS in Other Modes, and Troubleshooting

This guide is for troubleshooting macOS in the scenario that it can’t boot up.

Guide to UICollectionView With Custom Layout

UICollectionView is the most powerful view controller in UIKit.

Why I don’t build apps for friends anymore

Over the past 10 years, I’ve lots of friends and classmates say to me:

Migrating an iOS Project From Objective-C to Swift

UIApplicationDelegate

Calling a View Controller Function From React Native

When you mix React Native with existing Swift/Objective-C code base, it gets complex for even the simplest of tasks.

Why I Hate React Native

I have spent 2 weeks using React Native for an existing iOS app, building a new feature that could be summed up as - providing a list of images which can be tapped on.

Guide to Integrating CodePush for iOS React Native Project

CodePush is a wonderful technology to make INSTANT changes to your app.

React Native for iOS Swift Developer

React Native is the biggest technology available for iOS developer, since 2015.