在PreferenceFragmentCompat中使用Android ViewModel的解决方法如下:
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
class MyViewModel : ViewModel() {
    private val _myData = MutableLiveData()
    val myData: LiveData get() = _myData
    fun updateData(newData: String) {
        _myData.value = newData
    }
}
  class MyPreferenceFragment : PreferenceFragmentCompat() {
    private lateinit var viewModel: MyViewModel
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        viewModel = ViewModelProvider(this).get(MyViewModel::class.java)
    }
    // ...
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    // ...
    viewModel.myData.observe(viewLifecycleOwner) { newData ->
        // 更新首选项的显示
        val preference = findPreference("my_preference_key")
        preference?.summary = newData
    }
}
 val button = view.findViewById以上就是在 PreferenceFragmentCompat 中使用 Android ViewModel 的解决方法,通过 ViewModel 来管理数据,并使用 LiveData 来监听数据的变化,以更新首选项的显示。