我尝试从Internet上获取数据,完成后我更新了Recyclerview
,但它从未显示。方法onDone()
的吐司尺寸为result
,不为空。
我的代码:
class SearchFragment : Fragment() {
private lateinit var requestSearchPresenter: RequestSearchPresenter
private lateinit var recyclerViewAdapter: RecyclerViewAdapter
private var searchResult = ArrayList<ItemNewFeedCollection?>()
private val onRequestSearchResult = object : OnRequestSearchResult {
override fun onEmpty(result: ListNewFeedCollection) {
recyclerViewAdapter.notifyDataSetChanged()
}
override fun onDone(result: ListNewFeedCollection) {
searchResult = result.post
Toast.makeText(requireContext(), "${searchResult.size}", Toast.LENGTH_SHORT).show()
recyclerViewAdapter.notifyDataSetChanged()
}
override fun onFail(t: String) {
recyclerViewAdapter.notifyDataSetChanged()
}
}
private var recyclerViewItemClickListener = object : OnRecyclerViewItemClickListener {
override fun onItemClick(view: View, postion: Int) {
(requireActivity() as NewFeedActivity).apply {
val post = searchResult
if (post[postion]!!.date == "null" && post[postion]!!.date == post[postion]!!.description &&
post[postion]!!.date == post[postion]!!.full_post && post[postion]!!.date == post[postion]!!.image &&
post[postion]!!.date == post[postion]!!.full_post
) {
} else {
val link = post[postion]!!.link
val source = post[postion]!!.source
val intent = Intent(requireContext(), PostActivity::class.java)
intent.putExtra("link", link)
intent.putExtra("source", source)
startActivity(intent)
}
}
}
override fun onLongItemClick(view: View, postion: Int) {
}
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_search, container, false)
}
private fun configRecyclerView() {
recyclerViewAdapter = RecyclerViewAdapter(requireContext(), searchResult, recyclerViewItemClickListener)
recycler_view.layoutManager = LinearLayoutManager(requireContext())
recycler_view.adapter = recyclerViewAdapter
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
configRecyclerView()
val keyWord = arguments?.getString("key_word")
keyWord?.let {
requestSearchPresenter = RequestSearchPresenter(onRequestSearchResult)
requestSearchPresenter.search(it)
}
}
}
但是我将方法configRecyclerView()
移至onDone()
,它显示在:
override fun onDone(result: NewFeedCollection) {
searchResult = result.post
Toast.makeText(requireContext(), "${searchResult.size}", Toast.LENGTH_SHORT).show()
configRecyclerView()
recyclerViewAdapter.notifyDataSetChanged()
}
答案 0 :(得分:2)
在fun onDone
中,您要重新分配结果:searchResult = result.post
而不是您必须更新最初传递给适配器的列表的引用。这意味着您需要更改代码:
来自:
searchResult = result.post
到
searchResult.clear();
searchResult.addAll(result.post);