嗨，我在对话框中有一个listView，并且为对话框设置了自定义适配器。
我查找并设置了addTextChangedListener，但似乎不起作用。
我只想在列表中搜索并在用户键入“编辑”文本时刷新列表
请问我在哪里弄错了
这是我的代码
private void showCompaniesDialog(List<Company> companies) {
if(companies != null) {
final Dialog dialog = new Dialog(getContext());
// dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setCancelable(false);
dialog.setContentView(R.layout.dialog_company_listview);
Button btndialog = (Button) dialog.findViewById(R.id.btndialog);
btndialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
ListView listView = (ListView) dialog.findViewById(R.id.listview);
//ArrayAdapter arrayAdapter = new ArrayAdapter(getContext(), R.layout.company_list_item, R.id.tv, companies);
CompanyAdapter companyAdapter = new CompanyAdapter(getActivity(), 0, companies);
listView.setAdapter(companyAdapter);
//HERE I SET THE TEXT FILTER ENABLED
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//textView.setText("You have clicked : " + companies[position]);
dialog.dismiss();
}
});
//HERE I ADD CHANGED LISTENER
EditText etSearch = (EditText) dialog.findViewById(R.id.etSearch);
etSearch.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
//companyAdapter.getFilter().filter(charSequence.toString());
}
@Override
public void afterTextChanged(Editable editable) {
companyAdapter.getFilter().filter(editable);
}
});
dialog.show();
}
}
这是公司的自定义适配器
public class CompanyAdapter extends ArrayAdapter<Company>{
private Activity activity;
private List<Company> lCompany;
private LayoutInflater inflater = null;
public CompanyAdapter (Activity activity, int textViewResourceId, List<Company> lCompany){
super(activity, textViewResourceId, lCompany);
try{
this.activity = activity;
this.lCompany = lCompany;
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}catch (Exception e){
e.printStackTrace();
}
}
public int getCount(){
return lCompany.size();
}
public Company getItem (Company position){
return position;
}
public long getItemId(int position){
return position;
}
public class ViewHolder {
public TextView display_name;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
final ViewHolder holder;
try {
if (convertView == null) {
vi = inflater.inflate(R.layout.company_list_item, null);
holder = new ViewHolder();
holder.display_name = (TextView) vi.findViewById(R.id.tvCompanyName);
vi.setTag(holder);
} else {
holder = (ViewHolder) vi.getTag();
}
holder.display_name.setText(lCompany.get(position).getName());
} catch (Exception e) {
e.printStackTrace();
}
return vi;
}
}
任何建议都会很有帮助
答案 0 :(得分：0)
您需要将Filterable接口添加到适配器。
您可以将以下代码添加到适配器中
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
final List < String > list = originalData;
int count = list.size();
final ArrayList < String > nlist = new ArrayList < String > (count);
String filterableString;
for (int i = 0; i < count; i++) {
filterableString = list.get(i);
if (filterableString.toLowerCase().contains(filterString)) {
nlist.add(filterableString);
}
}
results.values = nlist;
results.count = nlist.size();
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredData = (ArrayList < String > ) results.values;
notifyDataSetChanged();
}
}
}
您需要根据需要进行更改
答案 1 :(得分：0)
我使用与ListView配对的SearchView来实现此目的。 SearchView具有一些内置方法，这些方法会在更改文本或单击“搜索”时触发，您可以覆盖这些方法以在ListView中设置过滤器。
MyActivity.java
// Setup the ListView
// breedListView = (ListView)rootView.findViewById(R.id.breedListView);
// My 'Activity' is actually a ListFragment so getListView() is how it is done
breedListView = getListView();
breedListView.setFastScrollEnabled(true);
breedListView.setTextFilterEnabled(true);
// Setup the searchView
searchView = (SearchView)rootView.findViewById(R.id.searchView);
setupSearchView();
// Set some default properties
private void setupSearchView() {
searchView.setIconifiedByDefault(false);
searchView.setOnQueryTextListener(this);
searchView.setSubmitButtonEnabled(false);
searchView.setQueryHint("Search");
}
// Reset the filter as the user types
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)) {
breedListView.clearTextFilter();
} else {
breedListView.setFilterText(newText.toString());
}
return true;
}
// Reset the filter when Search is pressed
public boolean onQueryTextSubmit(String query) {
if (TextUtils.isEmpty(query)) {
breedListView.clearTextFilter();
} else {
breedListView.setFilterText(query.toString());
}
return false;
}
// After getting/refreshing the list, do this to reapply the query to the new list
CharSequence suggestWord = searchView.getQuery();
searchView.setQuery(suggestWord, true);
MyActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</SearchView>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@android:id/list"
android:layout_weight="0.1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
<ListView
android:id="@+id/listIndex"
android:dividerHeight="0dp"
android:divider="@null"
android:scrollbars="none"
android:layout_width="30dp"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
</LinearLayout>