What is LIFF?
LIFF is one of our latest products out for LINE Messaging API users. So, what is LIFF? LIFF stands for the LINE Front-end Framework, a web app platform that runs inside the LINE app. LIFF apps running on the LINE app can obtain LINE user ID or tokens needed to use the LIFF API. With the information obtained, LIFF apps can provide features using user information, such as sending messages on behalf of the user.
Great to meet you all. This is ha1f from LINE Fukuoka, I develop iOS apps at LINE. Back when I was as a part timer at LINE, I was involved in making in-house tools for LINE. To share a little bit of my background, I was hired as a part timer with a confirmed offer to a full time position. Anyway, today, I’d like to show you a tool I developed during my time as a part timer, the Animation Sticker Checker.
What is APNG?
Before we get into the details of the tool, let’s discover what APNG is. APNG (Animated Portable Network Graphics) is a specification for animated image, consisting of images each numbered with a sequence number. LINE animation stickers use APNG. Unlike GIF, APNG supports full color, alpha channel and has a high compression rate. APNG is compatible with PNG, and is displayed as a still image for image viewers that do not support APNG. If you have the right tool, you can convert a sequence of PNG files into an APNG file.
Hi there you all, this is Kawasako from Frontend Standardization team in LINE. Our team is in charge of developing tools that are commonly required by the frontend development team, for developing products. Also we seek ways to boost information sharing and communication between developers. I’d like to take this opportunity to introduce our work and our recent workshop.
LINE Japan’s office relocated in April, 2017 to JR Shinjuku Miraina Tower to accommodate its growing number of staff. At the time of relocation, the IT support department introduced a number of new systems into the company. One of those is the LINE Floor Map system which I am going to share with you in this post.
Before we moved to Shinjuku, we used to manage our floor map with Microsoft Excel. Here is a part of the excel file. (We’ve erased names off from the screenshot.)
Have you all noticed that you can now read manga on LINE?1) If this is a news to you, tap the more button (…) and then the LINE MANGA menu to take a ride through countless awesome manga available on LINE.
To let you in on a little secret, the screen you are seeing below is implemented with web-based technology. We think the smoothness of the screen transition is close to that of a native app. What do you think?
Before we begin
Hi everyone, I am Freddie Wang from LINE Fukuoka’s development team. I’m currently in charge of developing a new Android app called LINE Creators Studio. LINE Creators Studio is a sticker creation tool that lets anyone create his or her own stickers and sell them on LINE Store.
In this blog, I’d like to talk about Kotlin, the programming language which the LINE Creators Studio app is built on. I will explain why we chose Kotlin as our main language and introduce some of the Kotlin features we are using.
Note: LINE Creators Studio is currently available in Japan only. It will be released to other regions soon.
Advantages and key features of Kotlin
At Google I/O 2017, Google announced that Kotlin is now officially supported in Android Studio 3.0. When we kicked off the development project for LINE Creators Studio at the end of 2016, we were tasked with the challenge of growing it into an MVP (Minimum Viable Product) project in a very short time. Although Kotlin 1.0 had been released quite some time ago, no one in our team had the experience of using Kotlin. We spent some time to conduct a survey on Kotlin before starting the development and eventually decided to use Kotlin because of the benefits it provides as described below.
100% interoperable with Java
The most appealing aspect of Kotlin is that you can mix Kotlin code and Java code in the same project and continue to use all existing Java libraries. Although we don’t have any legacy Java code in our project, we wanted to use some awesome libraries such as Dagger 2, Retrofit, and RxJava.
Kotlin is designed for solving problems. One of its main goals is to write clean code more easily than Java. This is the first and foremost essential factor for us when developing Android applications.
Kotlin has a compact runtime library which can replace some large Java libraries such as Guava. Using large libraries may not be a problem in server or desktop environments but it can be problematic in Android. Because the Android environment puts 65K methods limit on Android apps, we should avoid using large Java libraries. Kotlin’s stdlib library (version 1.1.3-2) has only 6306 methods, which means it has less impact than the Guava libraries in terms of the number of methods.
Compatible with old Android devices
Kotlin 1.0 is based on Java 6, which means it can support Android devices whose version is 2.3 or higher. This is another very important factor for Android developers.
Hi, my name is Hasebe. I’m in charge of the development of LINE Notify.
In a previous post, we introduced how you can use LINE Notify to send messages to LINE from the command-line. Today, I’m going to introduce two features newly implemented in the LINE Notify API. One is sending stickers and the other is uploading images.
The use case demonstrated in the previous post was sending a build result from Jenkins to LINE by using LINE Notify. In that use case, an image of Moon laughing was used to show how it can notify us of a build failure. It was during that time that we came to wonder, “why not make LINE Notify send stickers as well as images?”
We thought that sending stickers would make LINE Notify more “LINE-ish.” That’s why we decided to develop this feature.
Sending stickers from the command-line
Let’s try sending a sticker by using the curl command.
$ curl -X POST https://notify-api.line.me/api/notify -H 'Authorization: Bearer YOUR_PERSONAL_ACCESS_TOKEN' -F 'message=test' -F 'stickerPackageId=1' -F 'stickerId=113'
Hi, my name is Watanabe and I’m in charge of the development of LINE Notify. In this post, I’d like to share how developers can use LINE Notify to send messages to LINE straight from the command-line.
Up until now sending system messages to LINE either required a Bot API Trial or Business Connect account. While both are improved by Messaging API and provide many great features, they require a high level of implementation.
LINE Notify is an API that has a limited set of features, streamlining the whole process of sending messages to LINE.
Sending messages using cURL
By generating your own “personal access token” through LINE Notify, you can send messages by sending an HTTP POST request to the API endpoint. Any method can be used as long as it uses an HTTP request. In this post, let’s go over how you can use the HTTP client cURL.