就是这个错 moshi让你写自定义Adapter呢，

No JsonAdapter for class java.util.ArrayList, you should probably use List instead of ArrayList (Moshi only supports the collection interfaces by default) or else register a custom JsonAdapter.

java.lang.IllegalArgumentException: No JsonAdapter for class java.util.ArrayList, you should probably use List instead of ArrayList (Moshi only supports the collection interfaces by default) or else register a custom JsonAdapter.

解决方法

代码如下自己看吧，这几天就因为这个moshi搞死人哦。

abstract class MoshiArrayListJsonAdapter<C : MutableCollection<T>?, T> private constructor(

    private val elementAdapter: JsonAdapter<T>

) :

    JsonAdapter<C>() {

    abstract fun newCollection(): C


    @Throws(IOException::class)

    override fun fromJson(reader: JsonReader): C {

        val result = newCollection()

        reader.beginArray()

        while (reader.hasNext()) {

            result?.add(elementAdapter.fromJson(reader)!!)

        }

        reader.endArray()

        return result

    }


    @Throws(IOException::class)

    override fun toJson(writer: JsonWriter, value: C?) {

        writer.beginArray()

        for (element in value!!) {

            elementAdapter.toJson(writer, element)

        }

        writer.endArray()

    }


    override fun toString(): String {

        return "$elementAdapter.collection()"

    }


    companion object {

        val FACTORY = Factory { type, annotations, moshi ->

            val rawType = Types.getRawType(type)

            if (annotations.isNotEmpty()) return@Factory null

            if (rawType == ArrayList::class.java) {

                return@Factory newArrayListAdapter<Any>(

                    type,

                    moshi

                ).nullSafe()

            }

            null

        }


        private fun <T> newArrayListAdapter(

            type: Type,

            moshi: Moshi

        ): JsonAdapter<MutableCollection<T>> {

            val elementType =

                Types.collectionElementType(

                    type,

                    MutableCollection::class.java

                )


            val elementAdapter: JsonAdapter<T> = moshi.adapter(elementType)


            return object :

                MoshiArrayListJsonAdapter<MutableCollection<T>, T>(elementAdapter) {

                override fun newCollection(): MutableCollection<T> {

                    return ArrayList()

                }

            }

        }

    }

}

用法

本来不想写 但怕有人骂我代码不写全

    Moshi.Builder()

        .add(MoshiArrayListJsonAdapter.FACTORY)

        .build()