Using Dagger in your Android app

Caution

This codelab is deprecated and it will be removed soon.

This folder contains the source code for the "Using Dagger in your Android app" codelab.

The codelab is built in multiple GitHub branches:

• main is the codelab's starting point.
• 1_registration_main, 2_subcomponents, and 3_dagger_app are intermediate steps towards the solution.
• solution contains the solution to this codelab.

Introduction

Dependency injection is a technique widely used in programming and well suited to Android development. By following the principles of dependency injection, you lay the groundwork for a good app architecture.

Implementing dependency injection provides you with the following advantages:

• Reusability of code.
• Ease of refactoring.
• Ease of testing.

Pre-requisites

• Experience with Kotlin syntax.
• You understand Dependency Injection and know what the benefits of using Dagger in your Android app are.

Getting Started

1. Install Android Studio, if you don't already have it.
2. Download the sample.
3. Import the sample into Android Studio.
4. Build and run the sample.

Comparison between different branches

• Step 1 - main to 1_registration_main (Comparison)
• Step 2 - 1_registration_main to 2_subcomponents (Comparison)
• Step 3 - 2_subcomponents to 3_dagger_app (Comparison)
• Step 4 - 3_dagger_app to solution (Comparison)
• Full codelab comparison

License

Copyright 2019 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.