我在这里创建了一个主要的类，当我运行过滤器时它不起作用，如果它请你怎么做，这是我的代码
public class List_escale extends Activity implements SearchView.OnQueryTextListener{
// Refresh menu item
private MenuItem refreshMenuItem;
public static ArrayList<Escales> records=null;
private SearchView mSearchView;
Activity context=null;
StringBuffer buffer=null;
public static ProgressDialog pd;
CustomAdapter adapter=null;
TextView mSearchText;
Filter filter;
ListView lv=null;
BackTask bt=new BackTask();
protected void onCreate(Bundle savedInstanceState) {
//TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_escale);
config.Specific=false;
getActionBar();
lv=(ListView)findViewById(R.id.escales);
lv.setTextFilterEnabled(true);
context=this;
records=new ArrayList<Escales>();
adapter=new CustomAdapter(this, R.layout.list_item,R.id.LvDate,records);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1,final int arg2,
long arg3) {
pd = new ProgressDialog(context);
pd.setTitle("Detail escale");
pd.setMessage("Please wait.");
pd.setCancelable(true);
pd.setIndeterminate(true);
final View v= arg1;
// TODO Auto-generated method stub
TextView label=(TextView) v.findViewById(R.id.LvNom_Navire);
String nom = (String) label.getText();
TextView date=(TextView) v.findViewById(R.id.LvDate);
String dates = (String) date.getText();
pd.show();
Intent intent = new Intent(List_escale.this, Detail_escale.class);
//send data to the next activity
intent.putExtra("nom_navire", nom);
intent.putExtra("date_arrivee", dates);
startActivityForResult(intent, 100);
}
});
lv.setTextFilterEnabled(true);
filter = adapter.getFilter();
}}
public void onStart(){
super.onStart();
//execute background task
if (config.etat==false) {
bt.execute();
}
}
private class BackTask extends AsyncTask<Void,Void,Void>{
protected void onPreExecute(){
super.onPreExecute();
}
protected Void doInBackground(Void...params){
if (config.etat==false) {
config.etat=true;
getData();
}
return null;
}
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
return null;
}
protected void onPostExecute(Void result){
Log.e("size", records.size() + "");
adapter.notifyDataSetChanged(); //notify the ListView to get new records
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.barre, menu);
SearchManager searchManager = (SearchManager)
getSystemService( Context.SEARCH_SERVICE );
SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
searchView.setSearchableInfo(searchManager.
getSearchableInfo(getComponentName()));
searchView.setSubmitButtonEnabled(true);
searchView.setOnQueryTextListener(this);
return super.onCreateOptionsMenu(menu);
}
public boolean onNavigationItemSelected(int itemPosition, long itemId) {
// Action to be taken after selecting a spinner item
return false;
}
@Override
public boolean onQueryTextSubmit(String query) {
// TODO Auto-generated method stub
return false;
}
@Override public boolean onQueryTextChange(String newText)
{ if (TextUtils.isEmpty(newText))
{ filter.filter(null); }
else { filter.filter(newText); }
return true; }
}
这是我的CustomAdapter类
public class CustomAdapter extends ArrayAdapter<Escales> implements Filterable {
int groupid;
static ArrayList<Escales> records;
Context context;
private Filter navireFilter;
ArrayList<Escales> origRecords;
public CustomAdapter(Context context, int vg, int id, ArrayList<Escales> records) {
super(context, vg, id, records);
this.context = context;
groupid = vg;
CustomAdapter.records = records;
}
public int getCount() {
return records.size();
}
public Escales getItem(int position) {
return records.get(position);
}
public long getItemId(int position) {
return records.get(position).hashCode();
}
@SuppressLint("ViewHolder")
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView = inflater.inflate(groupid, parent, false);
TextView date = (TextView) itemView.findViewById(R.id.LvDate);
date.setText(records.get(position).getpNamenav());
TextView NomNav = (TextView) itemView.findViewById(R.id.LvNom_Navire);
NomNav.setText(records.get(position).getuDate());
if (position % 2 == 0) {
itemView.setBackgroundColor(Color.parseColor("#A4A4A4"));
} else {
itemView.setBackgroundColor(Color.parseColor("#FFFFFF"));
}
return itemView;
}
public static void refresh() {
records.removeAll(records);
}
public void resetData() {
records = origRecords;
}
@Override
public Filter getFilter(){
return new Filter(){
@Override
protected FilterResults performFiltering(CharSequence constraint) {
constraint = constraint.toString().toLowerCase();
FilterResults result = new FilterResults();
if (constraint != null && constraint.toString().length() > 0) {
List<Escales> founded = new ArrayList<Escales>();
for(Escales item: origRecords){
if(item.toString().toLowerCase().contains(constraint)){
founded.add(item);
}
}
result.values = founded;
result.count = founded.size();
}else {
result.values = origRecords;
result.count = origRecords.size();
}
return result;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
clear();
for (Escales item : (List<Escales>) results.values) {
add(item);
}
notifyDataSetChanged();
}
};
}
}
这是我的自行车课程
public class Escales {
private String NomNav;
private String DateArriv;
public void setNomNav(String NomNav){this.NomNav=NomNav;}
public void setDate(String date){this.DateArriv=date;}
public String getpNamenav(){return NomNav;}
public String getuDate(){return DateArriv;}
}
当我完全输入文本列表视图时，请帮助我，我的过滤器不起作用