使用 arrayadapter 来 filter 一个 listview

问答小助手 2013-03-14 01:45:43

加精

原问题来自于CSDN问答频道，更多解决方案见：http://ask.csdn.net/questions/1679

问题描述：

我使用 arrayadapter 来 filter 一个 listview。Arraydapter 的参数是一个String[][]。但是没有成功，必须要重写 Filter interface吗？要是这样的话，如何重写呢？
filter 数组的每一个位置：

galleryValues[0][0] -> "tiulo" [0][1] -> "desc" [0][2] -> "etc"

lstContinente = (ListView)findViewById(R.id.list);

lstContinente.setTextFilterEnabled(true);

adapter = new PortaitArrayAdapter(cx,galleryValues);   

lstContinente.setAdapter(adapter);



ed_busqueda.addTextChangedListener(new TextWatcher() {           

    public void afterTextChanged(Editable s) {}      

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

    // TODO Auto-generated method stub       

}        

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

    adapter.getFilter().filter(s.toString());

    adapter.notifyDataSetChanged();                 

}        

});

The adapter code:

public class PortaitArrayAdapter extends ArrayAdapter<String> {

    private final Context context;

    private final String[][] values;

    private List<Imagen> imagenes = null;

    private LayoutInflater mInflater;

    public ImageLoader imageLoader;     

    public PortaitArrayAdapter(Context context, String[][] values) {

        super(context, R.layout.gallery_row);

        this.context = context;

        this.values = values;

        mInflater = (LayoutInflater) context

                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        imagenes = new ArrayList<Imagen>();

        for (int i = 0; i < 20; i++) imagenes.add(new Imagen());

        Bitmap def = BitmapFactory.decodeResource(this.context.getResources(),R.drawable.ic_launcher);

        imageLoader=new ImageLoader(this.context,def, imagenes);

    }

    @Override

    public int getCount (){

        return this.values.length;

    }

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder;

        if (convertView == null) {

            holder = new ViewHolder();

        convertView =  mInflater.inflate(R.layout.gallery_row, parent, false);

            holder.txtTitulo = (TextView) convertView.findViewById(R.id.txt_gallery_titulo);

            holder.txtDesc = (TextView) convertView.findViewById(R.id.txt_gallery_desc);

            holder.txtFecha = (TextView) convertView.findViewById(R.id.txt_gallery_fecha);

            holder.txtEst = (TextView) convertView.findViewById(R.id.txt_gallery_est);

            holder.imageView    = (ImageView)convertView.findViewById(R.id.lst_img_gallery);

            convertView.setTag(holder);

        } else {

            holder = (ViewHolder) convertView.getTag();

        }

       /*LayoutInflater inflater = (LayoutInflater) context

                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View rowView = inflater.inflate(R.layout.gallery_row, parent, false);*/



        //ImageView imageView = (ImageView) rowView.findViewById(R.id.icon);

        Bitmap bmp;

        Log.v("Position --> ",String.valueOf(position));

        try {

            byte b[] = imagenes.get(position).getImageData();

            if (b != null) {

                bmp = BitmapFactory.decodeByteArray(b, 0, b.length);

                if (bmp != null) holder.imageView.setImageBitmap(bmp);

            } else {

         String urlBase = galleryValues[position][0].substring(0, galleryValues[position][0].lastIndexOf("/")+1);

               String urlToEncode = galleryValues[position][0].substring(galleryValues[position][0].lastIndexOf("/")+1, galleryValues[position][0].length());

         urlToEncode = URLEncoder.encode(urlToEncode,"UTF-8");

         String url = urlBase.concat(urlToEncode);

         url = url.replace("+", "%20");

               Log.v("UrlFinal --> ",url);

imageLoader.DisplayImage(String.valueOf(position),url,act,holder.imageView, position,null);

            }

            } catch (Exception e) {

            Log.e(this.getClass().getName(),"Exception en pos = " + position + " error:" + e.getMessage());

            e.printStackTrace();

        }

       holder.txtTitulo.setText(galleryValues[position][1] + ", " + galleryValues[position][2]);

        String[] dates = galleryValues[position][4].split("/");  

        String date = dates [1] + "/" + dates[0] + "/" + dates[2];

        Date d1 = new Date(date);

        DateFormat df = DateFormat.getDateInstance(DateFormat.LONG);

        holder.txtDesc.setText(galleryValues[position][3]);

        holder.txtFecha.setText(df.format(d1));

        holder.txtEst.setText(getText(R.string.num_fotos_gallery) + galleryValues[position][5] + " - " + getText(R.string.num_videos_gallery) + galleryValues[position][6] + " - " + getText(R.string.num_exp_gallery) + galleryValues[position][7]);

        return convertView;

    }

   }

private static class ViewHolder {

    TextView txtTitulo;

    TextView txtDesc;

    TextView txtFecha;

    TextView txtEst;

    ImageView imageView;

}