Retrofit2的使用

使用建造者模式实例化Retrofit

private fun retrofit(): Retrofit = Retrofit.Builder()
      //  后端接口地址
      .baseUrl("http://192.168.0.100:00002")
      //  将值转化为JSON格式
      .addConverterFactory(GsonConverterFactory.create())
      .build()
         // 实例化接口
val webservice:Webservice = retrofit().create(Webservice::class.java)

定义请求接口：

interface Webservice {
  /**
   * 请求列表
   * @param peddle
   * @return liveList
   */
  @POST("/live/find/all")
  fun getLiveList(@Body peddle: Peddle): Call<LiveList>
}

在类中使用

/*
* Copyright (c) 2020 www.ai-wsd.com Inc. All rights reserved
*/
class UserRepository {
  private val webservice: Webservice = ApiService.webservice
  fun getLiveList():LiveData<LiveList>{
      val data = MutableLiveData<LiveList>()
      // peddle为实体类
      val peddle = Peddle(1,3)
      webservice.getLiveList(peddle).enqueue(object : Callback<LiveList> {
          override fun onResponse(call: Call<LiveList>, response: Response<LiveList>) {
              data.value = response.body()
          }

          override fun onFailure(call: Call<LiveList>, t: Throwable) {
              Log.e(TAG, "onFailure: $t")
          }

      })
      return data
  }

  companion object{
      const val TAG = "UserRepository"
  }
}

依赖添加

implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'