【发布时间】：2017-08-14 16:40:59
【问题描述】：
对于一个个人项目，我正在构建一个应用程序，它显示欧洲最受欢迎的足球（或者我应该说是足球？）联赛的当前表格。该表是一个recyclerview，里面的每个团队都是一个cardview。一开始我的设备处于纵向模式时，一切正常，但是当我切换到横向模式然后又回到纵向时问题就开始了。在那之后，我在我当前的卡片视图下面看到了另一层卡片视图，一切都变得非常丑陋。
This is how it looks when everything gets messy
我的 recyclerview 适配器：
public class TeamAdapter extends RecyclerView.Adapter<TeamAdapter.TeamViewHolder> {
private TeamLeagueStandings[] teams;
public TeamAdapter(TeamLeagueStandings[] teams){
this.teams=teams;
}
@Override
public TeamAdapter.TeamViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.
from(parent.getContext()).
inflate(R.layout.card_view_team, parent, false);
return new TeamViewHolder(itemView);
}
@Override
public void onBindViewHolder(TeamAdapter.TeamViewHolder holder, int position) {
TeamLeagueStandings team = teams[position];
holder.teamname.setText(team.getTeamName());
holder.matches.setText(Integer.toString(team.getCurGames()));
holder.wins.setText(Integer.toString(team.getWins()));
holder.draws.setText(Integer.toString(team.getDraws()));
holder.losses.setText(Integer.toString(team.getLosses()));
holder.gd.setText(Integer.toString(team.getGoalDifference()));
holder.points.setText(Integer.toString(team.getPoints()));
}
@Override
public int getItemCount() {
return teams.length;
}}
我的视图持有者（适配器内部的内部类）：
public static class TeamViewHolder extends RecyclerView.ViewHolder{
protected TextView teamname;
protected TextView matches;
protected TextView wins;
protected TextView draws;
protected TextView losses;
protected TextView gd;
protected TextView points;
public TeamViewHolder(View itemView) {
super(itemView);
teamname=itemView.findViewById(R.id.teamName_txtview);
matches=itemView.findViewById(R.id.matches_txtview);
wins=itemView.findViewById(R.id.wins_txtview);
draws=itemView.findViewById(R.id.draws_txtview);
losses=itemView.findViewById(R.id.losses_txtview);
gd=itemView.findViewById(R.id.gd_txtview);
points=itemView.findViewById(R.id.points_txtview);
}
}
最后，我的主要片段，我声明了recyclerview：
public class TableStandingsFragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
TeamAdapter adapter;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
public TableStandingsFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment BlankFragment.
*/
// TODO: Rename and change types and number of parameters
public static TableStandingsFragment newInstance(String param1, String param2) {
TableStandingsFragment fragment = new TableStandingsFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
public TeamLeagueStandings [] GetPLTeams() throws IOException, JSONException {
URL urlPL= League_standings.GetPLQuery();
TeamLeagueStandings[] teams=League_standings.LeagueStandingsArray(urlPL);
return teams;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
// Inflate the layout for this fragment
View v= inflater.inflate(R.layout.fragment_table, container, false);
try {
adapter= new TeamAdapter(GetPLTeams());
RecyclerView recyclerView = (RecyclerView) v.findViewById(R.id.recyler_teams);
recyclerView.setHasFixedSize(true);
recyclerView.setAdapter(adapter);
recyclerView.addItemDecoration(new VerticalSpaceItemDecorator(30));
LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return v;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
class VerticalSpaceItemDecorator extends RecyclerView.ItemDecoration {
private final int spacer;
public VerticalSpaceItemDecorator(int spacer) {
this.spacer = spacer;
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
super.getItemOffsets(outRect, view, parent, state);
outRect.bottom = spacer;
}
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
当然，还有更多代码我没有上传，我认为我上传的这段代码足以解决这个问题。 谢谢！！
【问题讨论】：
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发布您的 R.layout.card_view_team
标签： android