¿Cómo implementar getFilter en un BaseAdapter?
Estoy tratando de implementar un getFilter () en un adaptador base para filtrar los resultados de búsqueda en una Lista. ¿Hay algún ejemplo de cómo implementar un getFilter ()?
MainActivity.java
final AppInfoAdapter adapter = new AppInfoAdapter(this, Utilities.getSystemFilteredApplication(this), getPackageManager());
public void onTextChanged(CharSequence s, int start, int before,
int count) {
adapter.getFilter().filter(s); //Filter from my adapter
adapter.notifyDataSetChanged(); //Update my view
}
AppInfoAdapter.java
package com.example.permission;
import java.util.List;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ImageView;
import android.widget.TextView;
public class AppInfoAdapter extends BaseAdapter implements Filterable{
private Context mContext;
private List mListAppInfo;
PackageManager mPackManager;
public AppInfoAdapter(Context c, List list, PackageManager pm) {
mContext = c;
mListAppInfo = list;
mPackManager = pm;
}
public int getCount() {
return mListAppInfo.size();
}
public Object getItem(int position) {
return mListAppInfo.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// get the selected entry
ApplicationInfo entry = (ApplicationInfo) mListAppInfo.get(position);
// reference to convertView
View v = convertView;
// inflate new layout if null
if(v == null) {
LayoutInflater inflater = LayoutInflater.from(mContext);
v = inflater.inflate(R.layout.layout_appinfo, null);
}
// load controls from layout resources
ImageView ivAppIcon = (ImageView)v.findViewById(R.id.ivIcon);
TextView tvAppName = (TextView)v.findViewById(R.id.tvName);
TextView tvPkgName = (TextView)v.findViewById(R.id.tvPack);
// set data to display
ivAppIcon.setImageDrawable(entry.loadIcon(mPackManager));
tvAppName.setText(entry.loadLabel(mPackManager));
tvPkgName.setText(entry.packageName);
// return view
return v;
}
public Filter getFilter() {
// TODO Auto-generated method stub
return null;
}
}
EDITAR: Edite el código y agregue AppInfoAdapter.java completo