改进“需要HTTP方法注释”

时间:2020-02-03 21:48:15

标签: android kotlin retrofit kotlin-coroutines

使用协程和Jetpack进行实验,并从Retrofit中获得无用的堆栈跟踪:

 java.lang.IllegalArgumentException: HTTP method annotation is required (e.g., @GET, @POST, etc.).
        for method PokeApi.getPokeList

改造调用API(全部为2.7.1导入):

  import retrofit2.http.GET
  import retrofit2.http.Path
  import retrofit2.http.Query

interface PokeApi {
    @GET("pokemon")
    suspend fun getPokeList(@Query("limit") limit: Int = 151
    ): PokeListRequest

    @GET("pokemon/{species}")
    suspend fun getPokemon(@Path("species") pokemon: String
    ): PokeRequest

}

网络呼叫者:

class PokeClient {
    private var gson = Gson()
    private var caller = Retrofit.Builder()
        .baseUrl("https://pokeapi.co/api/v2/")
        .addConverterFactory(GsonConverterFactory.create(gson))
        .build()
        .create(PokeApi::class.java)


    suspend fun getAllPokemon(): PokeListRequest {
        return caller.getPokeList()
    }

    suspend fun lookupPokemon(species: String): PokeRequest {
        return caller.getPokemon(species)
    }

}

从ViewModel调用:

fun retrieveList() {
        viewModelScope.launch {
            PokeClient().getAllPokemon().results.map{it.name}
                .also{pokeList.value = it}
        }
    }
}

虽然不漂亮,但我不明白为什么它不起作用。

1 个答案:

答案 0 :(得分:0)

将Retrofit调用者分为不同的模块即可解决此问题。

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