为了解决这个问题,首先要确保在使用 Android Kotlin 时正确地处理实时变化。建议使用 LiveData 对象来观察数据变化,这样可以确保 UI 及时更新。以下是示例代码:
class MyViewModel : ViewModel() {
private val _myLiveData = MutableLiveData()
val myLiveData: LiveData = _myLiveData
// method to update _myLiveData
fun updateLiveData(newValue: String) {
_myLiveData.value = newValue
}
}
class MyFragment : Fragment() {
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
val binding: MyFragmentBinding =
DataBindingUtil.inflate(inflater, R.layout.my_fragment, container, false)
val viewModel = ViewModelProvider(this).get(MyViewModel::class.java)
// observe myLiveData in the ViewModel
viewModel.myLiveData.observe(viewLifecycleOwner, { newValue ->
// update UI
binding.myTextView.text = newValue
})
return binding.root
}
}