Random search in the listview via editext on android?

Question

Random search in the listview via editext on android?

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#1 by (0 votes)
#2 by (0 votes)

0

Hello, I'm very new to programming, I'm really enthusiastic, I'm just looking for a type that editext looks for the letter or word in the text so that, for example, if my string is written "Mr. Jose Ventura "and I type only" Ventura "it can be located. Thanks in advance, I am grateful if you post the code.

public class MainActivity extends ActionBarActivity {
private ListView lv;
private EditText et;
private String[] lst;
private ArrayList<String> lst_Encontrados = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    lv = (ListView) findViewById(R.id.lvlist);
    et = (EditText) findViewById(R.id.etlist);

    lst = new String[] {"Sr. José Ventura","Sra. Maria Cícera","Vô Antonio"};


    lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, lst));
    CarregarEncontrados();


    et.addTextChangedListener(new TextWatcher()
    {
        public void afterTextChanged(Editable s)
        {
            // Abstract Method of TextWatcher Interface.
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after)
        {
            // Abstract Method of TextWatcher Interface.
        }


        public void onTextChanged(CharSequence s, int start, int before, int count)
        {
            CarregarEncontrados();


            lv.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, lst_Encontrados));
        }
    });

    lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View view, int position, long id) {


            AlertDialog.Builder test = new AlertDialog.Builder(MainActivity.this);

            if(((TextView) view).getText().equals("Sr. José Ventura")){
                test.setTitle("test1");
                test.setMessage("0123456789");
                test.setNeutralButton("OK", null);
                test.show();


            }
            if(((TextView) view).getText().equals("Sra. Maria Cícera")){
               test.setTitle("Sra. Maria Cícera");
                test.setMessage("486597231");
                test.setNeutralButton("OK", null);
                test.show();
            }

            if(((TextView) view).getText().equals("Vô Antonio")){
                test.setTitle("Vô Antonio");
                test.setMessage("23456892");
                test.setNeutralButton("OK", null);
                test.show();;;
            }


                       }
    });



}


public void CarregarEncontrados() {
    int textlength = et.getText().length();

    lst_Encontrados.clear();

    for (int i = 0; i < lst.length; i++) {
        if (textlength <= lst[i].length()) {
            String textoAux = (String) lst[i].subSequence(0, textlength);
            String textoFormatado = et.getText().toString();


            textoAux = removeAcentos(textoAux);

            textoFormatado = removeAcentos(textoFormatado);

            if (textoFormatado.equalsIgnoreCase(textoAux)) {
                lst_Encontrados.add(lst[i]);
            }
        }
    }
}

private static Map<Character, Character> acentosMap;

public static String removeAcentos(String texto) {

    if (acentosMap == null || acentosMap.size() == 0) {
        acentosMap = new HashMap<>();
        acentosMap.put('À', 'A');
        acentosMap.put('Á', 'A');
        acentosMap.put('Â', 'A');
        acentosMap.put('Ã', 'A');
        acentosMap.put('Ä', 'A');
        acentosMap.put('È', 'E');
        acentosMap.put('É', 'E');
        acentosMap.put('Ê', 'E');
        acentosMap.put('Ë', 'E');
        acentosMap.put('Í', 'I');
        acentosMap.put('Ì', 'I');
        acentosMap.put('Î', 'I');
        acentosMap.put('Ï', 'I');
        acentosMap.put('Ù', 'U');
        acentosMap.put('Ú', 'U');
        acentosMap.put('Û', 'U');
        acentosMap.put('Ü', 'U');
        acentosMap.put('Ò', 'O');
        acentosMap.put('Ó', 'O');
        acentosMap.put('Ô', 'O');
        acentosMap.put('Õ', 'O');
        acentosMap.put('Ö', 'O');
        acentosMap.put('Ñ', 'N');
        acentosMap.put('Ç', 'C');
        acentosMap.put('ª', 'A');
        acentosMap.put('º', 'O');
        acentosMap.put('§', 'S');
        acentosMap.put('³', '3');
        acentosMap.put('²', '2');
        acentosMap.put('¹', '1');
        acentosMap.put('à', 'a');
        acentosMap.put('á', 'a');
        acentosMap.put('â', 'a');
        acentosMap.put('ã', 'a');
        acentosMap.put('ä', 'a');
        acentosMap.put('è', 'e');
        acentosMap.put('é', 'e');
        acentosMap.put('ê', 'e');
        acentosMap.put('ë', 'e');
        acentosMap.put('í', 'i');
        acentosMap.put('ì', 'i');
        acentosMap.put('î', 'i');
        acentosMap.put('ï', 'i');
        acentosMap.put('ù', 'u');
        acentosMap.put('ú', 'u');
        acentosMap.put('û', 'u');
        acentosMap.put('ü', 'u');
        acentosMap.put('ò', 'o');
        acentosMap.put('ó', 'o');
        acentosMap.put('ô', 'o');
        acentosMap.put('õ', 'o');
        acentosMap.put('ö', 'o');
        acentosMap.put('ñ', 'n');
        acentosMap.put('ç', 'c');
        acentosMap.put('ç', 'c');
    }

    if (texto == null) {
        return "";
    }

    StringBuilder sb = new StringBuilder(texto);

    for (int i = 0; i < texto.length(); i++) {
        Character c = acentosMap.get(sb.charAt(i));
        if (c != null) {
            sb.setCharAt(i, c);
        }
    }

    return sb.toString();

}

android busca listview filtro edittext

asked by anonymous 10.08.2015 / 23:51

2 answers

0

Wilfer , I've done something like this these days, it's a filter that allows you to search by typing inside an EditText.

This method you add inside your Adapter.

public Filter getFilter()
{
    Filter filter = new Filter()
    {
        @Override
        protected FilterResults performFiltering(CharSequence filtro)
        {
            FilterResults results = new FilterResults();

            if (filtro == null || filtro.length() == 0)
            {
                results.count = listaProfdFiltrado.size();
                results.values = listaProfdFiltrado;
            } else
            {
                List<Produto> produtosFiltrados = new ArrayList<Produto>();

                for (int i = 0; i < listaProfdFiltrado.size(); i++)
                {
                    Produto produto = listaProfdFiltrado.get(i);

                    filtro = filtro.toString().toLowerCase();
                  //condicao, ean e plu alterar para os itens que deseja buscar
                    String condicao = produto.getDescricao().toLowerCase();
                    String ean = produto.getEan();
                    String codigoPlu = produto.getCodigo();
                   //apenas uma validação minha porque preciso buscar por 3 referencias
                    if (condicao.contains(filtro) || ean.contains(filtro) || codigoPlu.contains(filtro))
                    {

                        produtosFiltrados.add(produto);

                    } 
                }

                results.count = produtosFiltrados.size();
                results.values = produtosFiltrados;

            }
            return results;
        }

        @SuppressWarnings("unchecked")
        @Override
        protected void publishResults(CharSequence constraint, Filter.FilterResults results)
        {
            listaProdutos = (List<Produto>) results.values;

            notifyDataSetChanged();
        }

    };
//retorna o filter do que você pesquisou
    return filter;

}

Within your onCreate you need to initialize your component, the onTextChanged method is responsible for displaying the changes you make when you type.

   EditText editText = (EditText) findViewById(R.id.editText1);
    editText.addTextChangedListener(new TextWatcher()
    {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count)
        {
            //o filtro é chamado para efetuar as operações
            adapterListView.getFilter().filter(s.toString());
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after)
        {
        }

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

Note : These lists are of my use, you need to swap or to a simple array or work with your list type.

Documentation where you are dealing with Filter

11.08.2015 / 14:34

Modularize WinForms Are there techniques for reducing memory usage (by development) in using javascript?

score 0 · Accepted Answer

I've just changed my code for this one and it searches the middle of the words, I hope to help:

 public void CarregarEncontrados() {
    int textlength = et.getText().length();

    lst_Encontrados.clear();

    for (int i = 0; i < lst.length; i++) {
        if (textlength <= lst[i].length()) {

            if (lst[i].toLowerCase().contains(
                    et.getText().toString().toLowerCase().trim())) {
                lst_Encontrados.add(lst[i]);
            }
        }
    }
}