筛选器获得错误的项目选择问题后，recyclerview上的searchfilter

Question

我有一个recyclerview和一个edittext。除非未过滤，否则我可以从recyclerview选择正确的项目。在输入edittext时  当我从列表中选择任何项目时，Recyclerview列表将被过滤，它向我显示实际的列表项目而不是选定的项目。

我的片段类：

public class HomeFragment extends Fragment  {

List<ActivityCell> lstActivity ;
public  ActivityCell_RecyclerViewAdapter myAdapter;
public RecyclerView myrv;

ClockPieView clockPieView;

//Notification
private static final int NOTIFICATION_ID = 1;
private CharSequence notificationTitleText = "Hello Title";
private CharSequence notificationDescText = "This is custom Notification desc";
public long timeDifference = 0;
Chronometer chronometer;
public long pauseOffset;

LinearLayout snacklayout;
// Session Manager Class
SessionManager session;

//sessiondan alacağımız Stringlerimizi kaydedeceğimiz Stringler
String username, sifre;
String userID;

//TextViewlerimiz
TextView txt_deneme_sifre;
TextView main_head_txt;
String HeaderFirstStep;

//Fab
FloatingActionButton fabHomeBtn;




@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_home,container,false);




        final DatabaseHelper mdb = new DatabaseHelper(getActivity());

    lstActivity = new ArrayList<>();

    Cursor cursor = mdb.getAction();

    while (cursor.moveToNext()){

        String draw_name = cursor.getString(1);

        int id = getResources().getIdentifier(draw_name, "drawable",getActivity().getPackageName());


        //int img_id = Integer.parseInt(cursor.getString(1));

        lstActivity.add(new ActivityCell(cursor.getString(0),id,10));

    }
    myrv = (RecyclerView) view.findViewById(R.id.homefragment_recyclerview_id);
    myAdapter = new ActivityCell_RecyclerViewAdapter(getActivity(),lstActivity);
    myrv.setLayoutManager(new GridLayoutManager(getActivity(),2));
    myrv.setAdapter(myAdapter);


    EditText Search_edittext = (EditText) view.findViewById(R.id.Search_edittext);
    Search_edittext.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            filter(s.toString());
        }
    });



    return view;
}

private void filter(String text) {
    ArrayList<ActivityCell> filteredList = new ArrayList<>();

    for (ActivityCell item : lstActivity) {
        if (item.getTitle().toLowerCase().contains(text.toLowerCase())) {
            filteredList.add(item);
        }
    }

    myAdapter.filterList(filteredList);

}


@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    snacklayout=(LinearLayout) getActivity().findViewById(R.id.home_Linear_layout);
    //TextView tanımlamaları
    main_head_txt = (TextView) getActivity().findViewById(R.id.main_head_txt);
    txt_deneme_sifre = (TextView) getActivity().findViewById(R.id.txt_deneme_sifre);





    final DatabaseHelper mdb1 = new DatabaseHelper(getActivity());

    session = new SessionManager(getActivity());

    // sessiondan kullanıcı verilerini almak için nesnemizi oluşturduk.
    HashMap<String, String> user = session.getUserDetails();

    //keylerine göre user nesnemizden verilerimizi çağırdık ve ekledik.
    try {
        userID = user.get(SessionManager.KEY_USERID);
    } catch(NumberFormatException nfe) {
        System.out.println("Could not parse " + nfe);
    }


    mdb1.getWritableDatabase();



    Cursor cursor = mdb1.getProfile(userID);
    while (cursor.moveToNext()){
        String firstname = cursor.getString(0);
        setHeaderMessage();

        main_head_txt.setText(HeaderFirstStep+" "+ firstname);

    }

我的适配器类

public class ActivityCell_RecyclerViewAdapter extends RecyclerView.Adapter<ActivityCell_RecyclerViewAdapter.MyViewHolder>  {



private Context mContext ;
private List<ActivityCell> mData ;
public  int activity_state = 0;
public LinearLayout snacklayout;
public String activity_name;


private android.support.v4.app.NotificationCompat.Builder builder;
private NotificationManager notificationManager;
private int notification_id=0;
private RemoteViews remoteViews;
private Context context;
PendingIntent pendingIntent;

// Session Manager Class
SessionManager session;

//sessiondan alacağımız Stringlerimizi kaydedeceğimiz Stringler
String userID;

public ActivityCell_RecyclerViewAdapter(Context mContext, List<ActivityCell> mData) {
    this.mContext = mContext;
    this.context=mContext;
    this.mData = mData;

}



@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    View view ;






    LayoutInflater mInflater = LayoutInflater.from(mContext);
    view = mInflater.inflate(R.layout.cardview_item_activity,parent,false);

    return new MyViewHolder(view);


}

@RequiresApi(api = Build.VERSION_CODES.M)
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
    final DatabaseHelper mdb = new DatabaseHelper(mContext);
    mdb.getWritableDatabase();
    final boolean[] isChronometerRunning = new boolean[100];


    // session verileri için sınıfımızı çağırdık
    session = new SessionManager(mContext.getApplicationContext());

    // sessiondan kullanıcı verilerini almak için nesnemizi oluşturduk.
    HashMap<String, String> user = session.getUserDetails();

    //keylerine göre user nesnemizden verilerimizi çağırdık ve ekledik.
    userID = user.get(SessionManager.KEY_USERID);

    holder.activity_chr_id.setTextColor(mContext.getColor(R.color.white));
    holder.activity_title_id.setText(mData.get(position).getTitle());

    holder.activity_chr_id.setBase(elapsedRealtime());
    holder.cardview_activity_img_id.setImageResource(mData.get(position).getThumbnail());

    isChronometerRunning[position]= false;

    Cursor cursor = mdb.getActionColor(mData.get(position).getTitle());

    while (cursor.moveToNext()){

        String color_icon = cursor.getString(0);
        holder.cardview_activity_img_id.setColorFilter(Color.parseColor(color_icon));

    }



    holder.cardView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {



            HomeFragment fragment=new HomeFragment();




            //!  holder.activity_chr_id.getText().toString().equals("00:00")

            if ( isChronometerRunning[position] ){

                activity_name=holder.activity_title_id.getText().toString();
                holder.activity_chr_id.stop();
                mdb.updateFinishDate(activity_name);
                holder.activity_chr_id.setBase(elapsedRealtime());
                holder.activity_chr_id.setTextColor(Color.parseColor("#ffffff"));

                Cursor cursor = mdb.getActionColor(mData.get(position).getTitle());

                while (cursor.moveToNext()){

                    String color_icon = cursor.getString(0);
                    holder.cardview_activity_img_id.setColorFilter(Color.parseColor(color_icon));

                }

                holder.cardView.setCardBackgroundColor(Color.parseColor("#ffffff"));
                holder.activity_title_id.setTextColor(Color.parseColor("#2d2d2d"));
                activity_state=activity_state-1;
                isChronometerRunning[position]= false;

                notificationManager = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
                builder = new android.support.v4.app.NotificationCompat.Builder(context);
                Intent button_intent = new Intent("button_clicker");
                button_intent.putExtra("idd", notification_id);

                PendingIntent button_pending_event = PendingIntent.getBroadcast(context, notification_id,
                        button_intent, 0);


                remoteViews.setOnClickPendingIntent(R.id.button, button_pending_event);

                Intent notification_intent = new Intent(context, Home.class);
                pendingIntent = PendingIntent.getActivity(context, 0, notification_intent, 0);
                notificationManager.cancel(position);









            }
            else if (activity_state <3 && ! isChronometerRunning[position] ){

                //fragment.ShowNotification();
                activity_name=holder.activity_title_id.getText().toString();
                mdb.addData(activity_name,Integer.parseInt(userID.toString()));
                holder.activity_chr_id.setBase(elapsedRealtime());
                holder.activity_chr_id.start();
                holder.cardview_activity_img_id.setColorFilter(Color.parseColor("#ffffff"));
                holder.activity_chr_id.setTextColor(Color.parseColor("#ffffff"));
                holder.cardView.setCardBackgroundColor(Color.parseColor(BackgroundColorSet(activity_name)));
                holder.activity_title_id.setTextColor(Color.parseColor("#ffffff"));
                boolean deneme2 = holder.activity_chr_id.isActivated();

                isChronometerRunning[position]= true;

                notificationManager = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
                builder = new android.support.v4.app.NotificationCompat.Builder(context);

                remoteViews = new RemoteViews(context.getPackageName(),R.layout.custom_notification);
                remoteViews.setImageViewResource(R.id.notif_icon, mData.get(position).getThumbnail());
                remoteViews.setChronometer(R.id.notif_Chronometer, SystemClock.elapsedRealtime(),
                        null, true); //pausing
                remoteViews.setTextViewText(R.id.notif_title,holder.activity_title_id.getText().toString());
                    notification_id = (int) position;

                builder.setSmallIcon(R.drawable.login_logo)

                        .setOngoing(true)
                        .setCustomContentView(remoteViews)
                        .setCustomBigContentView(remoteViews)
                        .setContentIntent(pendingIntent);

                ButtonListener test = new ButtonListener();


                Intent button_intent = new Intent("button_clicker");

                button_intent.putExtra("idd", notification_id);

                PendingIntent button_pending_event = PendingIntent.getBroadcast(context, notification_id,
                        button_intent, 0);


                remoteViews.setOnClickPendingIntent(R.id.button, button_pending_event);




                Intent notification_intent = new Intent(context, Home.class);
                notification_intent.putExtra("idd", notification_id);
                pendingIntent = PendingIntent.getActivity(context, 0, notification_intent, 0);








                notificationManager.notify(notification_id, builder.build());






                activity_state++;

            }
            else
            {
                Snackbar.make(v,"Aynı Anda 3 ten fazla etkinlik oluşturulamaz", Snackbar.LENGTH_LONG).show();

            }



        }
    });



}

public String  BackgroundColorSet(String activity_name)
{
    final DatabaseHelper mdb = new DatabaseHelper(mContext);
    mdb.getWritableDatabase();
    String BackgroundColorname = "";

    Cursor cursor = mdb.getActionColor(activity_name);

    while (cursor.moveToNext()){

        BackgroundColorname = cursor.getString(0);


    }

    return BackgroundColorname;

}

@Override
public int getItemCount() {
    return mData.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder {

    TextView activity_title_id;
    ImageView cardview_activity_img_id;
    CardView cardView ;
    Chronometer activity_chr_id;




    public MyViewHolder(View itemView) {
        super(itemView);



        activity_title_id = (TextView) itemView.findViewById(R.id.activity_title_id) ;
        cardview_activity_img_id = (ImageView) itemView.findViewById(R.id.cardview_activity_img_id);
        cardView = (CardView) itemView.findViewById(R.id.item_cardview_id);
        activity_chr_id = (Chronometer)  itemView.findViewById(R.id.activity_chr_id);



    }
}

public void filterList(ArrayList<ActivityCell> filteredList) {
    mData = filteredList;
    notifyDataSetChanged();
}
}

这是我的示例图片

第一州

过滤项

出现上一个状态错误的项目

Answer 1

您的问题与此问题类似，RecyclerView item background alternating color out of order

“这是因为RecyclerView回收了旧视图以创建新视图。当向下滚动旧视图以创建新视图时，由于调用onBindViewHolder时已经设置了这些旧视图的背景色，在onBindViewHolder中指定else条件，它将改变颜色并维持交替的颜色顺序。”

可能ActivityCell从mData.get(position)返回，所以我的建议是，向您的ActivityCell对象名称ishighlighted / isSelected添加一个布尔字段，因此单击isSelected = true时，最重要的是，当您绑定项目时，如果isSelected为true，则在单元格上应用突出显示/单击效果。