Vous n’avez pas pu assister au dernier meetup Mobile en partenariat avec BackMarket ? Voici un récap’ !

Avec Jean-Charles Sorin (Engineering Manager) & Florian Le Ficher (Android Tech Lead) : Présentation de l'équipe mobile, de l'organisation en team-feature, l'architecture des apps iOS (Swift) et Android (Kotlin), les problèmes techniques rencontrés ainsi que les solutions mises en place

Avec Philippe Boisney (Senior Android Engineer) Boostez vos fichiers de build Gradle avec Kotlin : Comment l'utilisation de Kotlin permet de rendre vos fichiers de build plus sexy et éviter d'écrire trop de boilerplate code.

Retrouvez le meetup en video juste ici !

What is Back Market ?

Fuck new

A marketplace for refurbished products
Certified professionals
Sell back your old devices

A random week at Back Market

Mobile Team

Remote culture

Remote-friendly

*for everyone: 2 days/ week *full-remotes contracts

15 full-remote contracts at the BoT
Dedicated #remote channel
Zoom software
Tips: Krisp, Slack Donut
Regular 1:1s are important

Mobile APPS

App & main features:

Diagnosis
Buyback
ASUX
Shop

BoT (Bureau of Technology)

How mobile team interacts with other teams?

How do we work with all of them?

Shared JIRA Board (EM/PO)
Regulars API Synch Meetings
API Specs repo (Open-API)
Shared Demos
Dedicated Slack channels
Product Board

Tech

Android / iOS

Native apps: 100% Kotlin & Swift 5
MVVM
Multi-modules / frameworks
Clean archi
Dependency Injection

Multi modules

Split features into modules
Reusable modules
Faster builds
Better code reviews
Each module have its tests
Scalable architecture

Tools

Android & iOS topic

Battery diagnosis

Collect battery data

BatteryManager class

Collect battery data

BatteryManager class

outputs:

OnePlus 6 device

1864 mAh @ 69%
2700 mAh @100%
82% capacity

Pixel 2XL device

Get the device battery capacity

com.android.internal.os.PowerProfile class

Can’t be used without reflection 😱
Sometimes not available

Battery Health

BatteryManager class

Possible Value

Battery Diagnosis

#BatteryGate

History

iOS 7 to 9 - Private APIs are available for the battery information, like “brand”, voltage, wear level, etc.
iOS 7 to 9 - Private APIs are available for the battery, like “brand”, voltage, wear level, etc.
iOS 10 released - Private APIs information decreased
iOS 11 is released - Private APIs information decreased
Older devices are slow, as newer too. #BatteryGate
Apple Engineers says that is to save battery health
iOS 11.3 is released with Battery Health dashboard
iOS 12 released: no more useful information, apps like Battery Life need to ask the user to go to battery settings page, the app is useless now.