Fragment search containing ListView elements

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Fragment search containing ListView elements

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I have a fragment called Praise which contains ListView elements. I want to implement a search bar of the existing elements in the ListView but I do not know how to do it, until now I have tried to implement with the searchView but I do not achieve it. These are my classes Main Activity

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    Adaptador miadaptador;
    ListView listaDatos;
    ArrayList<Datos> Lista= new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.addDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        CargarFragmento(new Alabanza());
        navigationView.getMenu().getItem(0).setChecked(true);
        miadaptador = new Adaptador(getApplicationContext(),Lista);

//        listaDatos.setAdapter(miadaptador);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu_search,menu);
        MenuItem item = menu.findItem(R.id.menuSearch);
        SearchView searchView= (SearchView)item.getActionView();



        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String s) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String s) {
                miadaptador.getFilter().filter(s);
                return false;
            }
        });
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement


        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_camera) {
            CargarFragmento(new Alabanza());
        } else if (id == R.id.nav_gallery) {
           CargarFragmento(new Temas());
        } else if (id == R.id.nav_slideshow) {

        } else if (id == R.id.nav_manage) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }


    private void CargarFragmento(Fragment fragmento){
        FragmentManager Manager = getSupportFragmentManager();
        Manager.beginTransaction().replace(R.id.contenedorFragmento, fragmento).commit();

    }
}

main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

</android.support.v4.widget.DrawerLayout>

Class Praise

public class Alabanza extends Fragment {


    ListView listaDatos;
    ArrayList<Datos> Lista= new ArrayList<>();

    Adaptador miadaptador;


    public ArrayList<Datos> getLista() {
        return Lista;
    }

    public void setLista(ArrayList<Datos> lista) {
        Lista = lista;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View view=inflater.inflate(R.layout.fragment_alabanza, container, false);

        listaDatos = (ListView)view.findViewById(R.id.lstDatos);

        Lista.add(new Datos(1,"A la Diestra de Dios"));
        Lista.add(new Datos(2,"A solas al Huerto"));
        Lista.add(new Datos(3,"A ti Señor"));
        Lista.add(new Datos(4,"A veces me pregunto"));
        Lista.add(new Datos(5,"Al divino Salvador"));
        Lista.add(new Datos(6,"Al Mundo Paz"));
        Lista.add(new Datos(7,"Alabado el gran manantial"));
        Lista.add(new Datos(8,"Alabanzas a Dios dad"));
        Lista.add(new Datos(9,"Aleluya Amen"));
        Lista.add(new Datos(10,"Aleluya oh Creador"));



        miadaptador = new Adaptador(getActivity().getApplicationContext(),Lista);
        listaDatos.setAdapter(miadaptador);

        //Agregamos escuchador
        listaDatos.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                Datos obj=(Datos) adapterView.getItemAtPosition(i);
                //Creamos el paso hacia la nueva activity
                Intent paso=new Intent(getActivity().getApplicationContext(), DetalleActivity.class);
                paso.putExtra("objeto", (Serializable) obj); // Serializamos el traspaso del objeto
                //Realiza el traspaso a la otra activity
                startActivity(paso);
            }
        });
        return view;
    }

}

praises.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Fragmentos.Alabanza"
    android:orientation="vertical">

    <!-- TODO: Update blank fragment layout -->

    <ListView
        android:id="@+id/lstDatos"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:dividerHeight="2dp"
        android:fadeScrollbars="true"
        android:scrollbars="vertical"
        android:verticalScrollbarPosition="right" />


</LinearLayout>

And finally the Adapter class

public class Adaptador extends BaseAdapter implements Filterable {

    Context contexto;
    ArrayList<Datos> ListaObjetos;
    ArrayList<Datos> mStringFilterList;
    ValueFilter valueFilter;

    public Adaptador(Context contexto, ArrayList<Datos> listaObjetos) {
        this.contexto = contexto;
        this.ListaObjetos = listaObjetos;
        mStringFilterList=listaObjetos;
    }

    /*
    Retorna cantidad de elementos de la vista
     */
    @Override
    public int getCount() {
        return this.ListaObjetos.size();
    }

    /*
        Retorna objeto puntual de la posicion que indico
         */
    @Override
    public Object getItem(int i) {
        return this.ListaObjetos.get(i);
    }

    /*
    Retorna Id del objeto puntual de la posicion que indico
     */
    @Override
    public long getItemId(int i) {
        return this.ListaObjetos.get(i).getId();
    }

    /*
    Se ejecuta en cada secuencia de cada hito de la listview
     */
    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {

        View vista = view;

        //Inyectamos el layout definido dentro de la vista del ListView
        LayoutInflater inflate = LayoutInflater.from(contexto);
        vista = inflate.inflate(R.layout.itemlistview, null);

        //Referenciamos el titulo
        TextView titulo = (TextView) vista.findViewById(R.id.tw_titulo);
        titulo.setText(ListaObjetos.get(i).getTitulo().toString());
        return vista;
    }


    @Override
    public Filter getFilter() {
        if (valueFilter == null) {
            valueFilter = new ValueFilter();
        }
        return valueFilter;
    }

    private class ValueFilter extends Filter {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            FilterResults results = new FilterResults();

            if (constraint != null && constraint.length() > 0) {
                ArrayList<Datos> filterList = new ArrayList<Datos>();
                for (int i = 0; i < mStringFilterList.size(); i++) {
                    if ((mStringFilterList.get(i).getTitulo().toUpperCase())
                            .contains(constraint.toString().toUpperCase())) {

                        Datos data = new Datos(mStringFilterList.get(i)
                                .getId(), mStringFilterList.get(i)
                                .getTitulo());

                        filterList.add(data);
                    }
                }
                results.count = filterList.size();
                results.values = filterList;
            } else {
                results.count = mStringFilterList.size();
                results.values = mStringFilterList;
            }
            return results;

        }

        @Override
        protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
            ListaObjetos = (ArrayList<Datos>) filterResults.values;
            notifyDataSetChanged();
        }
    }
}

I hope for your help ... I'm desperate: c

android activity busquedas fragment

asked by Misael Ramirez Espinosa 18.06.2018 в 05:10

source

1 answer

phonegap cordova plugin background mauron85 geolocation Rescue value from Widget Text in tkinter

score 0 · Answer 1

Look at this is the code to declare the serchView in the xml of your activity

<SearchView
    android:id="@+id/searchView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

This is the code to use it

This is on the onCreate

    searchView = (SearchView) findViewById(R.id.searchView);

    // Sets the default or resting state of the search field. If true, a single search icon is shown by default and
    // expands to show the text field and other buttons when pressed. Also, if the default state is iconified, then it
    // collapses to that state when the close button is pressed. Changes to this property will take effect immediately.
    // The default value is true. Disculpa lo copie asi porque no estaba para traducirlo si quieres lo traduzco.
    searchView.setIconifiedByDefault(true);

    search(searchView);

 private void search(SearchView searchView) {

    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {

            if(newText.length() == 0)
            {
                listView.setVisibility(View.VISIBLE);
                listViewFind.setVisibility(View.INVISIBLE);
                return false;
            }

            filteredModelList = filter(allItems, newText);

            if (filteredModelList.size() > 0)
            {
                listViewFind.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> adapterView, View view, final int position, long id) {
                         //aquí pones lo que quieras
                        }
                        });
                        builder.setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialogInterface, int i) {
                                dialogInterface.dismiss();
                            }
                        });

                        builder.create().show();
                    }
                });
                return true;
            }
            else
            {
                //aquí pones un toast diciendo que no se encontraron resultados
                return false;
            }
        }
    });
}

 private List<Note> filter(List<Note> Notes, String query) {

    query = query.toLowerCase();

    filteredModelList = new ArrayList<>();

    for (Note note : Notes) {
        final String text = note.getEntity().toLowerCase();
        final String number = note.getDescription().toLowerCase();
        if (text.contains(query)) {
            filteredModelList.add(note);
        }
        else if(number.contains(query))
        {
            filteredModelList.add(note);
        }
    }

    // arraylist in your adapter
    //noteRealmResultsQuery = realm.where(Note.class).contains("description", query).findAll();
    noteAdapterFind = new FindAdapterNote(this, filteredModelList, R.layout.list_find_note);
    listViewFind.setVisibility(View.VISIBLE);
    listView.setVisibility(View.INVISIBLE);
    listViewFind.setAdapter(noteAdapterFind);
    noteAdapterFind.notifyDataSetChanged();

    return filteredModelList;
}

I hope it works for you, Note is created by me you have to replace it ok. Any questions comments ok. Remember that what I am doing is putting what I did as an example.