Blog - LINE ENGINEERING

TAG ARCHIVES: iOS

Untangle the threads between RxSwift and Combine
Zhihao Zang2023-09-04
I am an iOS engineer on the LINE B2B App Dev Team. I work on the LINE app and the LINE Official Account app.
Question: What kind of bug can only be easily reproduced on a device as old as an iPhone 7 or older? Hi there. I'm Zhihao Zang, an iOS engineer on the LINE B2B App Dev team. A big part of what we do involves developing and maintaining the LINE Official Account app. Today, I'd like to share our experience (including some of the hurdles we faced) in migrating the LINE Official Account app from using RxSwift to using Combine. Background: RxSwift and Combine We use RxSwift, a Reactive Programming fr
- iOS
- Swift
The new way of managing Chat storage in the iOS version of LINE
Harley Pham2023-02-22
Harley is an iOS engineer at LINE Vietnam.
While mobile device storage capacity is getting bigger and bigger nowadays, user data is also increasing in size as well. Users can have tons of extremely high quality photos or videos which can eat away their storage capacity very fast. Moreover, digital content can be easily shared among users in many social media apps or messaging apps such as our own LINE app or Instagram to name a few. This data duplication can even put more pressure on device storage as well. Our LINE app is not only the s
- iOS
Implementing auto-generated debugging documentation tool for the LINE beta app
Daniel2022-07-07
Daniel is an iOS Software Engineer at LINE
Introduction Any app that is a vital part of your service will eventually need debugging tools that can be used in its dev or alpha phase. These tools help the developers, QA, and leaders set up quality testing environments quickly during development. Having an overview allows us to reduce development and testing periods by a large margin. LINE has tools that provide hundreds of debugging features like this, and they’re still increasing day by day. It’s important to maintain document
- iOS
- Verda
- Jenkins
Improving Build Performance of LINE for iOS with Bazel
Doan TruongThi2020-07-09
iOS Engineer at LINE.
Background Over the years, the LINE for iOS source tree has grown to a size of hundreds of modules. As of late 2019, the project consists of more than 1.4 million lines of code without showing any signs of stopping its increase. This in turn, tripped up the build times for all the developers who work on the project. As the project grew we started to see more unreproducible problems as well. For instance, the builds worked locally but not on CI and vice versa. We took a step back
How we developed and integrated 'share' module into LINE app - 2
Hyeonji Jo / Keonhong Lee2020-05-11
Responsible for LINE iOS development
Introduction In Part I, we defined the following six categories to share our experience, difficulties and solutions of the Share module development for LINE iOS and covered the first two categories. Integrating conventions on data models Integrating logic on sharing data Identifying a list of eligible services Providing customized/additional actions Generalizing exceptions Improving UI/UX In this Part II, we will cover the remaining four categories. We will continue ou
- iOS
- Data/AI
How we developed and integrated 'share' module into LINE app - 1
Hyeonji Jo / Keonhong Lee2020-05-11
Responsible for LINE iOS development
Hi, there! We are Hyeonji Jo and Keonhong Lee, responsible for LINE iOS client development. Here we'd like to share our experience during the development of the Share module development on LINE for iOS, focusing on the difficulties we faced and how we overcame them. Overview: Share module The LINE app offers various services such as Chats, Album, Notes, Timeline and Keep, allowing users to freely upload and view posts, images or videos. In addition, the LINE app supports
- iOS
- Data/AI
How AIR ARMOR checks iOS Code Signing
Minyoung Sim2019-05-14
I develop AIR ARMOR at LINE
AIR ARMOR is a security solution of AIR; AIR is a component of the LINE GAME PLATFORM. You can refer to Seunghoon's posting on AIR GO and APK Signing for information on the APK signature scheme. For this posting, I'll explain about iOS code signing, one of Apple's security mechanism. Code signing is to verify the integrity of the software code and confirm the signer (who wrote the code). I'll also cover checking the integrity of iOS Mach-O bin
- iOS
- Security
- Client
LINE iOS/Android Hackathon 2017
Hyeonji Jo2018-01-30
She's a LINE iOS developer.
Nice to meet you all. I am Hyeonji Jo, an IOS developer at LINE. On this post, I'd like to take you to the LINE Hackathon 2017, held in December 13th to 15th, 2017. LINE has been holding regular workshops for LINE's iOS and Android engineers, consisting of a number of sessions and a short, day-long hackathon. A lot of feedback to the previous workshops demanded more time for the hackathon; participants had brilliant ideas but the time allocated had been a bit too short to develop them. So, t
- Android
- iOS
- Hackathon
WWDC17 Recap
Taejeong Lee, Hyuk Hur2017-07-05
Taejeong Lee is a LINE iOS developer and her favorite character is Brown. Hyuk Hur is also a LINE iOS developer. He is a lucky guy, he attended WWDC for 3 years in a row.
Introduction Hello, we are Taejeong Lee and Hyuk Heo, both iOS app developers at LINE. We had an opportunity to attend WWDC17 held at the San Jose Convention Center, from June 5th to June 9th. WWDC is an event for developers held by Apple every June in California. The event starts with the CEO's keynote speech and is followed by 100 sessions and 200 labs in the course of 5 days, in which attendees can experience Apple’s latest software and technology. WWDC has been held in San Francisco i
- Event Report
- iOS
Improving LINE Timeline performance on iOS through implementation of a view model
Keonhong Lee2017-05-29
Keonhong has participated in the development of Keep for both Android and iOS. He is currently on the Timeline for iOS development team.
Introductions Hello, my name is Keonhong Lee and I'm in charge of development for Timeline on iOS. In this blog post, I'd like to talk about how we improved performance of Timeline on iOS, after it had become heavy, slow, and difficult to manage from the many added features and history over time. Background First, some background on why we started on this path. Timeline is a place where you and your friends can share all of your social activities. Theoretically, a post uploaded to Timeline can b
- iOS

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