Dagger is a dependency injection framework that allows injecting collaborators into objects without requiring manual passing of dependencies. RxJava implements reactive programming, allowing observable streams to be manipulated through operators like map and filter. Retrofit makes REST API calls simply by defining an interface and allows results to be easily converted to Java objects. Together these libraries help create testable Android applications by decoupling classes and managing dependencies and asynchronous processes in a declarative way.
Dagger is a dependency injection framework that allows injecting collaborators into objects without requiring manual passing of dependencies. RxJava implements reactive programming, allowing observable streams to be manipulated through operators like map and filter. Retrofit makes REST API calls simply by defining an interface and allows results to be easily converted to Java objects. Together these libraries help create testable Android applications by decoupling classes and managing dependencies and asynchronous processes in a declarative way.
Presentation from the Charlotte Android developers meetup on 3/10/2015 at Skookum Digital Works.
One of the most common things done when writing mobile applications is accessing RESTful web-services. This normally requires a lot of boilerplate code, but it doesn’t have to. Retrofit from Square is an Android networking library that takes a lot of pain out of networking code. During the talk we’ll examine Retrofit in-depth and discuss its benefits. We’ll also discuss areas it could improve
This document provides an overview of Retrofit, an open source library for Android and Java that allows making REST API calls in a simple and efficient manner. It discusses how to initialize Retrofit with an endpoint URL and adapter, define API methods using annotations, handle requests and responses both synchronously and asynchronously, and convert JSON responses to Java objects using Gson. Code samples are provided throughout to demonstrate common Retrofit tasks like making GET requests, handling API parameters and headers, and subscribing to asynchronous Observable responses.
A practical guide to using RxJava on Android. Tips for improving your app architecture with reactive programming. What are the advantages and disadvantages of using RxJava over standard architecture? And how to connect with other popular Android libraries?
Presented at Droidcon Greece 2016.
RxJava is a library for composing asynchronous and event-based programs using observable sequences. It provides APIs for asynchronous programming with observable streams and the ability to chain operations and transformations on these streams using reactive extensions. The basic building blocks are Observables, which emit items, and Subscribers, which consume those items. Operators allow filtering, transforming, and combining Observable streams. RxJava helps address problems with threading and asynchronous operations in Android by providing tools to manage execution contexts and avoid callback hell.
This document provides an introduction to Retrofit and RxJava. It discusses:
1. How Retrofit turns REST APIs into Java interfaces and handles JSON conversion.
2. What RxJava is and how it allows for composing asynchronous and event-based programs using observable sequences.
3. Examples of making HTTP requests with Retrofit, including defining services, making synchronous and asynchronous requests, and using callbacks and RxJava.
4. Key RxJava concepts like Observables, operators like map, flatMap, and zip, and threading.
Reactive Programming on Android - RxAndroid - RxJavaAli Muzaffar
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Introduction to RxJava for reactive programming and how to use RxAndroid to do reactive programming on Android.
There is a sample android app to go with the slides that has all the source shown in the project.
The document discusses streaming media and how it allows for real-time delivery of audio and video over the internet. Streaming avoids the need to download entire files before viewing or listening by allowing content to be played as it is delivered. However, steady and fast internet connection speeds are required to maintain uninterrupted playback of streamed content.
This document discusses retrofitting techniques to strengthen existing structures against seismic activity. It describes upgrading reinforced concrete and masonry structures through methods like reinforced concrete jacketing, steel plate bonding, and adding new structural elements. Recent trends in Pakistan involve using carbon fiber reinforced polymer composites for flexural and shear strengthening. The document provides examples of retrofitting projects completed in Pakistan using these composite systems.
The document discusses designing teams and processes to adapt to changing needs. It recommends structuring teams so members can work within their competencies and across projects fluidly with clear roles and expectations. The design process should support the team and their work, and be flexible enough to change with team, organization, and project needs. An effective team culture builds an environment where members feel free to be themselves, voice opinions, and feel supported.
Next2Dで始めるゲーム開発 - Game Development Starting with Next2DToshiyuki Ienaga
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CEDEC2022に応募したのですが、見事に落選しました。
が、折角作った資料なので公開します。
I applied for CEDEC2022, but was not selected.
However, I am publishing this document because I made it at an opportunity.
現地時間3月3日から10日にかけて、世界中のテレコムが注目するテクノロジーカンファレンスである「Mobile World Conference 2025」がバルセロナで開催されました。特に競争の激しいヨーロッパのマーケットでは、各社が生き残りをかけたイノベーションをたくさん生み出しています。5G/6G、エッジクラウド、新しい音声技術など、多くのキーワードが注目されています。
36. Model Class の作成
public class SignIn {?
@SerializedName("access_token")?
public final String accessToken;?
?
@SerializedName("user_id")?
public final int userId;?
?
@SerializedName("group_id")?
public final int group_id;?
?
public SignIn(String accessToken, int userId, int group_id) {?
this.accessToken = accessToken;?
this.userId = userId;?
this.group_id = group_id;?
}?
}
37. Service Interface 作成
public interface UsersService {?
@FormUrlEncoded?
@POST("/v3/users/sign_in")?
Call<SignIn> signIn(@Field("email") String email, @Field("password") String password);?
}
38. Service Interface 作成
public interface UsersService {?
@FormUrlEncoded?
@POST("/v3/users/sign_in")?
Call<SignIn> signIn(@Field("email") String email, @Field("password") String password);?
}