如何使用Scarlet在Android上通过WebSocket连接? [英] How to connect via WebSocket on Android using Scarlet?

问题描述

README.md中的代码

Code from README.md

 val scarletInstance = Scarlet.Builder()
    .webSocketFactory(okHttpClient.newWebSocketFactory(GDAX_URL))
    .addMessageAdapterFactory(MoshiMessageAdapter.Factory())
    .addStreamAdapterFactory(RxJava2StreamAdapterFactory())
    .build() 

版本和依赖项:

implementation 'com.tinder.scarlet:scarlet:0.1.8'
implementation "com.github.tinder.scarlet:scarlet-websocket-okhttp:0.1.7"
implementation "com.github.tinder.scarlet:scarlet-stream-adapter-rxjava2:0.2.4"
implementation "com.github.tinder.scarlet:scarlet-message-adapter-moshi:0.2.4"
implementation "com.github.tinder.scarlet:scarlet-lifecycle-android:0.2.4"

推荐答案

首先，您应该使用接口声明一个WebSocket客户端.使用猩红色的注释(例如 @Receive 和 @Send )定义如何处理WebSocket通信，如以下示例所示:

First of all, you should declare a WebSocket client using an interface. Use Scarlet annotations such as @Receive and @Send to define how you are going to handle the WebSocket communication, as the following example:

interface NewsService {
    @Receive
    fun observeWebSocketEvent(): Flowable<WebSocket.Event>
    @Send
    fun sendSubscribe(subscribe: Subscribe)
    @Receive
    fun observeNews(): Flowable<MyNews>
}  

下一步是创建Scarlet Interface的实现，并订阅在WebSocket连接期间发出的数据流.在下面的示例中，使用了Moshi和RxJava，但是Scarlet提供了其他方式来处理和操作数据.

Next step is create an implementation of your Scarlet Interface and subscribe the data stream emitted during the WebSocket connection. In the following example , Moshi and RxJava are being used however Scarlet provide other ways to handle and manipulate the data.

val scarletInstance = Scarlet.Builder()
    .webSocketFactory(okHttpClient.newWebSocketFactory(BASE_URL))
    .addMessageAdapterFactory(MoshiMessageAdapter.Factory())
    .addStreamAdapterFactory(RxJava2StreamAdapter.Factory())
    .build()

//service created
val newsService = scarletInstance.create<NewsService>()

//define websocket event observer
newsService.observeWebSocketEvent()
    .filter { it is WebSocket.Event.OnConnectionOpened<*> }
    .subscribe({
        newsService.sendSubscribe()
    })

// news data result
newsService.observeNews()
    .subscribe({ news ->
        Log.d(TAG, news.toString())
    })

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