等待Kotlin协程中的LiveData结果

implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.4.0"

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel

class MyViewModel : ViewModel() {
    private val _resultLiveData = MutableLiveData<Result>()
    val resultLiveData: LiveData<Result> = _resultLiveData

    fun performAsyncOperation() {
        // 在这里执行异步操作，并将结果设置到_resultLiveData中
        // 例如，可以使用协程来执行异步操作
    }
}

import androidx.lifecycle.ViewModelProvider

class MyActivity : AppCompatActivity() {
    private lateinit var viewModel: MyViewModel

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

        viewModel = ViewModelProvider(this).get(MyViewModel::class.java)
        viewModel.resultLiveData.observe(this, { result ->
            // 在这里处理LiveData结果的变化
        })

        viewModel.performAsyncOperation()
    }
}