RxJava+Retrofit实现网络请求封装的方法

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

//retrofit2
implementation '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'

//rxjava2
implementation '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

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。