想說玩一下 在android studio 用chatgpt
結果玩一玩一直錯@@
網路找資料也一直在修改
private lateinit var viewModel: ViewModel
改來改去還是錯@@
再拜託各位大神了

MainActivity
package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.lifecycle.ViewModelProvider
import androidx.lifecycle.get
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.launch

class MainActivity : AppCompatActivity() {
private lateinit var viewModel: ViewModel

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    viewModel = ViewModelProvider(this).get(ViewModel::class.java)


    buttonSend.setOnClickListener {
        val apiKey = "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" // 替換為您的GPT-3 API金鑰
        val userMessage = editTextUserMessage.text.toString()

        GlobalScope.launch(Dispatchers.IO) {
            val response = viewModel.getChatCompletion(apiKey, userMessage)
            runOnUiThread {
                textViewBotResponse.text = response
            }
        }
    }
}

}
ViewModel
class ViewModel {
private val apiService: ApiService
init {
val retrofit = Retrofit.Builder()
.baseUrl("https://api.openai.com/v1/") // GPT-3 API的基本URL
.addConverterFactory(GsonConverterFactory.create())
.build()

    apiService = retrofit.create(ApiService::class.java)
}
suspend fun getChatCompletion(apiKey: String, prompt: String): String {
    val request = Gpt3Request(prompt)
    val response = apiService.getChatCompletion("Bearer $apiKey", request)
    if (response.choices.isNotEmpty()) {
        return response.choices[0].text
    } else {
        return "No response available"
    }
}

}