The Future of Dependency Injection with Dagger 2



Dagger is a fast dependency injector for both Java and Android. Its second major version not only brings new features for parity with other frameworks but continues to push the boundaries of speed. This talk will start with a brief introduction to Dagger and dependency injection in general. We will then cover the new concepts and new APIs provided by Dagger v2 with real-world examples. Finally we’ll demonstrate some powerful and fun behavior which can greatly enhance the quality of your apps. The concepts covered in this talk apply to both Java targeting the JVM and Android. If you are new to Dagger or dependency injection in general you can watch my “Architecting Android Apps with Dagger” talk from last year’s Devoxx on Parleys: (even if you aren’t an Android developer!)

Author:
Jake Wharton
Android, Java, open source, french bulldogs.
View more trainings by Jake Wharton at

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android tutorials

Android Dagger for Professionals Tutorial



This tutorial demonstrates how to implement Dependency Injection architectural pattern in Android using Dagger 2 dependency injection library.

Source code of the template application:

Resources referenced in this video:
The notes taken during this tutorial:
Dependency Injection in Android (blog post):
Dagger 2 Tutorial (blog post):
Liskov Substitution Principle and Context (blog post): will be published shortly
MVP and MVC Architectures in Android (blog post):

android tutorials

Farron Greatsword Moveset (Dark Souls 3) Boss Weapon



Farron Greatsword weapon move set. Showcase of this combo great sword and dagger (for parrying). Weapon in Dark Souls 3, including Skill Weapon Arts and sample PvE combat.

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See the stats for this weapon on Fextralife –

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Weapon Vids: (A through G)
Anri’s Straight Sword –
Aquamarine Dagger –
Arstor’s Spear –
Astora Greatsword –
Barbed Straight Sword –
Bastard Sword –
Battle Axe –
(Berserker) Black Blade –
Black Knight Glaive –
Black Knight Greataxe –
Black Knight Greatsword –
Black Knight Sword -…

Injeção de Dependência Com a lib Dagger 2 no Android



Nesse vídeo apresento uma maneira de implementar o design pattern Injeção de Dependência no Android, utilizando a lib Dagger 2 que é mantida pelo Google. Logo no início do vídeo explico o que é o design pattern Injeção de Dependência (simples de entender), as vantagens ao uso desse pattern ao invés de outras abordagens para obtenção de objetos, como: Construtores de classes e Factory design pattern, por exemplo. Vantagens (maximização da reutilização de código, testes e manutenção) citadas na documentação do package javax.inject, que também é necessário no trabalho conjunto com a lib Dagger 2 na implementação da Injeção de Dependência.

Importante ressaltar que o Dagger é para o Java, a Injeção de Dependência é um design pattern de programação, para qualquer linguagem.

Para finalizar o post e tentar explicar de uma maneira mais fácil o pattern, pense em sua classe A que tem uma variavel de instancia do tipo classe B, no momento sua classe A…

android tutorials using android studio

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