如何在Java/Kotlin中使用新的StateRestorationPolicy?
由于这个主题比较新,有人能告诉我如何使用这个功能吗? 我试图把它用在一个片段中如何在Java/Kotlin中使用新的StateRestorationPolicy?,java,android,kotlin,Java,Android,Kotlin,由于这个主题比较新,有人能告诉我如何使用这个功能吗? 我试图把它用在一个片段中 override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { ... Handler().postDelayed({ homePostAdapter!!.stateRestorationPolicy =
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
...
Handler().postDelayed({
homePostAdapter!!.stateRestorationPolicy =
RecyclerView.Adapter.StateRestorationPolicy.PREVENT_WHEN_EMPTY
},500)
...
}
好像不是这样的。很高兴粘贴完整的片段类
以下链接有助于以后阅读:
您需要将其添加到gradle文件中
implementation "androidx.recyclerview:recyclerview:1.2.0-alpha04"
不要再拖延了。您只需在初始化列表适配器之后设置
stateRestorationPolicy
listAdapter = ListAdapter()
// Set scroll restore policy
listdapter.stateRestorationPolicy =
RecyclerView.Adapter.StateRestorationPolicy.PREVENT_WHEN_EMPTY
也许这对你有用
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
val binding = FragmentMovieActionBinding.bind(view)
val pagingAdapter =PagingAdapter(lifecycleScope)
binding.apply {
rvListTypesMovies.apply {
adapter= pagingAdapter
pagingAdapter.stateRestorationPolicy = RecyclerView.Adapter.StateRestorationPolicy.PREVENT_WHEN_EMPTY
layoutManager =GridLayoutManager(requireContext(), 2)
setHasFixedSize(true)
我使用数据绑定和流。这不是我想要的。请阅读问题。你知道如何在片段中使用它吗?你的回答对我很有用