简要介绍

Retrofit是当前应用非常广泛的网络请求框架,通常结合RxJava来进行网络请求,本文将展示一个采用RxJava+Retrofit的网络请求demo.

集成步骤

1、app工程的build.gradle中添加依赖

//retrofit2implementation 'com.google.code.gson:gson:2.8.5'implementation 'com.squareup.retrofit2:retrofit:2.5.0'implementation 'com.squareup.retrofit2:converter-gson:2.5.0'implementation 'com.squareup.okhttp3:okhttp:3.12.2'implementation 'com.squareup.okhttp3:logging-interceptor:3.11.0'//rxjava2implementation 'io.reactivex.rxjava2:rxjava:2.2.2'implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'//配合Rxjava2 使用implementation 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'

2、在AndroidManifest.xml中添加权限

<uses-permission android:name="android.permission.INTERNET"/>

3、添加数据类Task

data class Task(var id: Int, var name: String?)

4、 添加网络请求类NetworkService

import io.reactivex.Observable;import retrofit2.http.GET;public interface NetworkService { @GET("data.json") Observable<Task> query();}

5、activity中调用

class MainActivity : AppCompatActivity() { private val BASE_URL = "https://raw.githubusercontent.com/cxyzy1/rxjava_retrofit_demo/master/" override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) queryData() } private fun queryData() { //创建Retrofit对象 val retrofit = Retrofit.Builder().baseUrl(BASE_URL) .addConverterFactory(GsonConverterFactory.create()) .addCallAdapterFactory(RxJava2CallAdapterFactory.create()) .build() //获取UserMsgService对象 val networkService = retrofit.create(NetworkService::class.java) networkService.query() .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(object : Observer<Task> { override fun onSubscribe(d: Disposable) { } override fun onNext(task: Task) { contentTv.text = task.toString() } override fun onError(e: Throwable) { Log.v("", e.message) } override fun onComplete() { } }) }}

网络请求结果截图

Demo源代码

https://github.com/cxyzy1/rxjava_retrofit_demo

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。