# Tips and tricks

Master the tools you need to work with Pepper and Nao with time-saving tips and tricks

Blog

Why use Kotlin on Pepper QiSDK?

Why use Kotlin on Pepper QiSDK?
Kotlin and the KDoc documentation - At SoftBank Robotics, we use Kotlin to develop the QiSDK API for Pepper robots and most libraries and applications. In this article, we will introduce Kotlin and the KDoc, explain why we made that choice and how to make a smooth transition from Java to Kotlin.
2021/02/22
Pepper closeup
Pepper QiSDK
Why use Kotlin on Pepper QiSDK?
Blog

Synchronise your Gradle files and get some insight about the Android Studio cache

Synchronise your Gradle files and get some insight about the Android Studio cache
How to manually synchronize your code with Gradle and understand the Android Studio cache - This tip explains how to synchronize your project with Gradle when updating build.gradle files and provides insight on handling the cache when using Android Studio. There are multiple levels of cache. We will explain the difference between the cache behind the "Invalidate cache and restart" menu, the "Clean project" one and other gradle caches involved in building an Android project. This article is not specific to Pepper QiSDK and introduces good practices for using the IDE.
2021/01/13
Pepper closeup
Pepper QiSDK
Synchronise your Gradle files and get some insight about the Android Studio cache
Blog

How to migrate a project to AndroidX

How to migrate a project to AndroidX
Refactoring your code to use AndroidX Jetpack made easy - Using AndroidX is highly recommended: Pepper applications and libraries developed at SoftBank Robotics use it, and Google announced it as the new standard. Here you will learn how to migrate a project to AndroidX using the "Refactor > Migrate to AndroidX" menu in Android Studio. In most cases, it will do the trick without any more hassle. Still, you should take the time to read the prerequisites and infos in this blog article, as following the recommended steps will make activating Jetpack and migrating from Support Library to AndroidX easier.
2020/12/31
Pepper closeup
Pepper QiSDK
How to migrate a project to AndroidX
Blog

How to install a library using JitPack

How to install a library using JitPack
Installing a library with JitPack is easy as pie! If you already have an Android project, just add two lines to your gradle config files and it's done! Let’s see in detail how to import and use a specific Pepper library.
2020/10/01
Pepper closeup
Pepper QiSDK
How to install a library using JitPack
Blog

Let’s make Pepper and NAO speak a second language

Let’s make Pepper and NAO speak a second language
How to install a language package and get speech recognition in new languages - As international talking robots, Pepper and NAO can access many languages for speech recognition, and its management is quite easy. This quick how-to explains how to set up new languages installing a language pack in a few simple steps.
2020/09/30
Pepper closeup
Pepper QiSDK
Pepper closeup
Pepper (NAOqi 2.5)
NAO closeup
NAO⁶
Let’s make Pepper and NAO speak a second language
Blog

Improve Android APK installation time on Pepper

Improve Android APK installation time on Pepper
How to reduce Android APK size to optimize deployment on Pepper QiSDK robot - As a developer, you may want to accelerate the build and the deployment of an application on Pepper from Android Studio. Here is a useful optimization trick to optimize the build and deploy time, to reduce the size of the application package (APK) and therefore improve installation and deployment time.
2020/05/26
Pepper closeup
Pepper QiSDK
Improve Android APK installation time on Pepper
Blog

Intention actions, the useful contextual help in Android Studio

Intention actions, the useful contextual help in Android Studio
How to use the contextual shortcut Alt+Enter or Option+Enter - Among many keyboard shortcuts, Android Studio provides a very useful context aware shortcut to manage intention actions: Alt+Enter (non Mac world) or Option+Enter (Mac world)
2020/05/26
Pepper closeup
Pepper QiSDK
Intention actions, the useful contextual help in Android Studio