Comment réparer la fonctionnalité de la barre de recherche dans une vue de liste?

1. J'ai un ListView qui contient des images, des noms de personnes, des anniversaires de personnes. J'ai créé une barre de recherche où elle peut être utilisée pour rechercher le contenu dans la ListView .

2. J'ai ajouté à la barre de recherche addTextChangedListener , et dans TextWatcher onTextChanged pour obtenir le filtre de l'adaptateur, mais par conséquent, lorsque je recherche un nom de personne, rien ne se passe.

Aussi pendant le débogage, j'ai vérifié que je recevais données de l'adaptateur et onTextchanged le seq de caractères saisi.

3. Activité principale:

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:padding="15dp"
    android:layout_height="match_parent"
    android:weightSum="100" >

    <ImageView
        android:id="@+id/imgP"
        android:layout_width="399dp"
        android:layout_height="150dp"
        android:layout_weight="66.6" />

    <RelativeLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="33.3">

        <TextView
            android:gravity="center"
            android:text="TextView2"
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:id="@+id/txtView2"/>

        <TextView
            android:id="@+id/txtView3"
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_below="@+id/txtView2"
            android:gravity="center"
            android:text="TextView3" />

        <RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent" />

        <Button
            android:id="@+id/btn_add"
            android:layout_width="69dp"
            android:layout_height="wrap_content"
            android:layout_below="@+id/txtView3"
           android:layout_marginRight="20dp"
            android:text="ADD" />

        <Button
            android:layout_width="69dp"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/btn_add"
            android:layout_below="@id/txtView3"
            android:id="@+id/btn_edit"
            android:text="edit"/>
        <Button
            android:layout_width="80dp"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/btn_edit"
            android:layout_below="@+id/txtView3"
            android:id="@+id/btn_delete"
            android:text="Delete"/>
    </RelativeLayout>

    </LinearLayout>

Classe d'adaptateur de liste d'étudiants:

 <?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/searchFilter"/>

    <ListView
        android:id="@+id/li_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        tools:layout_algignParentStart="true" />
</androidx.constraintlayout.widget.ConstraintLayout>

Classe PersonInfo:

    public class PersonInfo {
    private int image;
    private String name;
    private String birthday;

    public PersonInfo(int image, String name, String birthday) {
        this.image = image;
        this.name = name;
        this.birthday = birthday;
    }

    public String getName(){
        return name;
    }
    public int getImage() {
        return image;
    }

    public void setName(String name) {
        this.name = name;
    }


    public String getBirthday() {
        return birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
}

XML de l'activité principale:

    public class StudentsListAdapter extends ArrayAdapter<PersonInfo>{
    private Context contxt;
    private int rsrc;
    private List<PersonInfo> persons;
    private boolean isAdmin;


    public StudentsListAdapter( Context context, int resource, List<PersonInfo> _persons,  boolean _isAadmin) {
        super(context, resource, _persons);
        contxt = context;
        rsrc = resource;
        persons=_persons;
        isAdmin = _isAadmin;
    }

    Filter myFilter = new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            FilterResults filterResults = new FilterResults();
            ArrayList<PersonInfo> tempList=new ArrayList<PersonInfo>();
            // Add the filter code here
            if(constraint != null && persons!=null) {
                int length= persons.size();
                int i=0;
                while(i<length){
                    PersonInfo item= persons.get(i);
                    //do whatever you wanna do here
                    //adding result set output array
                    String name = item.getName();
                    if(name.toLowerCase().contains(constraint.toString()))  {
                        tempList.add(item);
                    }

                    i++;
                }
                //following two lines is very important
                //as publish result can only take FilterResults users
                filterResults.values = tempList;
                filterResults.count = tempList.size();
            }
            return filterResults;
        }

        @SuppressWarnings("unchecked")
        @Override
        protected void publishResults(CharSequence contraint, FilterResults results) {
            persons = (ArrayList<PersonInfo>) results.values;
            if (results.count > 0) {
                notifyDataSetChanged();
            } else {
                notifyDataSetInvalidated();
            }
        }
    };

    @NonNull
    @Override
    public View getView(final int position, @Nullable View convertView, @NonNull ViewGroup parent) {

        LayoutInflater inflater = LayoutInflater.from(contxt);
        View view = inflater.inflate(rsrc, null,false);

        ImageView imageView = view.findViewById(R.id.imgP);
        TextView pName = view.findViewById(R.id.txtView2);
        TextView pBirthday = view.findViewById(R.id.txtView3);

        Button btn_add = view.findViewById(R.id.btn_add);
        Button btn_edit = view.findViewById(R.id.btn_edit);
        Button btn_delete = view.findViewById(R.id.btn_delete);

        btn_add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(contxt,AddItems.class)
                        .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                contxt.startActivity(intent);
            }
        });


        if(isAdmin) {
            btn_add.setVisibility(View.VISIBLE);
            btn_edit.setVisibility(View.VISIBLE);
            btn_delete.setVisibility(View.VISIBLE);
        } else {
            btn_add.setVisibility(View.GONE);
            btn_edit.setVisibility(View.GONE);
            btn_delete.setVisibility(View.GONE);
        }


        PersonInfo p = persons.get(position);


        imageView.setImageDrawable(contxt.getResources().getDrawable(p.getImage()));
        pBirthday.setText(p.getBirthday());
        pName.setText(p.getName());

       btn_edit.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               persons.get(position);
           }
       });

        btn_delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                removePerson(position);
            }
        });
        return view;


    }
}

Adaptateur XML:

    public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    private Button btn_add,btn_edit,btn_delete;
    private StudentsListAdapter test1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Intent intent = getIntent();
        String username = intent.getStringExtra("Username");
        String password = intent.getStringExtra("Password");

        btn_add = findViewById(R.id.btn_add);
        btn_edit = findViewById(R.id.btn_edit);
        btn_delete = findViewById(R.id.btn_delete);

        EditText search = (EditText) findViewById(R.id.searchFilter);

        ListView listView1 = (ListView) findViewById(R.id.li_view);

        ArrayList<PersonInfo> students1 = new ArrayList<>();

        students1.add(new PersonInfo(android.R.drawable.btn_star, "Julien", "03/27/1998"));
        students1.add(new PersonInfo(android.R.drawable.btn_star, "Jamaica", "03/27/1998"));
        students1.add(new PersonInfo(android.R.drawable.btn_star, "Bara", "03/27/1998"));
        students1.add(new PersonInfo(android.R.drawable.btn_star, "Bere", "03/27/1998"));

        test1 = new StudentsListAdapter(
                this, R.layout.adapter_view_layout, students1, true);
        listView1.setAdapter(test1);

        search.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) {
                (MainActivity.this).test1.getFilter().filter(s);
            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });

        if(username.equals("admin") && password.equals("admin")){

            Log.d(TAG, "onCreate: Started.");
            ListView listView = (ListView) findViewById(R.id.li_view);

            ArrayList<PersonInfo> students = new ArrayList<>();


            students.add(new PersonInfo(android.R.drawable.btn_star, "Amaizing", "03/27/1998"));
            students.add(new PersonInfo(android.R.drawable.btn_star, "Jamaica", "03/27/1998"));
            students.add(new PersonInfo(android.R.drawable.btn_star, "But", "03/27/1998"));
            students.add(new PersonInfo(android.R.drawable.btn_star, "Carmen", "03/27/1998"));


            test1 = new StudentsListAdapter(
                    this, R.layout.adapter_view_layout, students, true);
            listView.setAdapter(test1);

            search.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) {
                    (MainActivity.this).test1.getFilter().filter(s.toString());
                    test1.notifyDataSetChanged();
                }

                @Override
                public void afterTextChanged(Editable s) {

                }
            });


        }
            else if (username.equals("user") && password.equals("user"))
            {
                ListView listView = (ListView) findViewById(R.id.li_view);

                ArrayList<PersonInfo> students = new ArrayList<>();


                students.add(new PersonInfo(android.R.drawable.btn_star, "AJ", "03/27/1998"));

                test1 = new StudentsListAdapter(
                        this, R.layout.adapter_view_layout, students,false);
                listView.setAdapter(test1);


            }
    }
}

Qu'est-ce que je fais mal? Toute aide sera fortement appréciée. Merci!