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有人可以幫助我使用自定義適配器來過濾列表我一直在此卡住了一段時間..我遵循logcat和它輸出的過濾結果我的問題是更新列表視圖與過濾結果。Android的ListView過濾器不工作
// list of data items
private static List<ListData> mDataList = Arrays.asList(
new ListData("Apple"),
new ListData("Banana"),
new ListData("Caramel"),
new ListData("Dog"),
new ListData("Cat"),
new ListData("Snake"),
new ListData("Lion"),
new ListData("Zebra"),
new ListData("Ant"),
new ListData("Bee"),
new ListData("Bird"),
new ListData("Leopard"),
new ListData("Flamingo"),
new ListData("Tusk"),
new ListData("Elephant"),
new ListData("Chicken")
);
SampleAdapter work = new SampleAdapter();
private Button btnoe;
private AutoCompleteTextView aoe;
private TextView txtHistory, ao;
private ListView lv;
private String[] places;
private String p = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
final EditText e = (EditText) findViewById(R.id.edt_search);
// init the list view and its adapter
final ListView lv = (ListView) findViewById(R.id.listView);
lv.setAdapter(work);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
e.setText("" + mDataList.get(position).data);
}
});
//setFields();
e.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
work.getFilter().filter(s.toString());
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
private static class ListData {
private String data;
public ListData(String data) {
this.data = data;
}
}
private class SampleAdapter extends BaseAdapter implements Filterable {
private List<String> filtered = null;
private ItemFilter mFilter = new ItemFilter();
@Override
public int getCount() {
return mDataList.size();
}
@Override
public ListData getItem(int position) {
return mDataList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public Filter getFilter() {
return mFilter;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
final List<ListData> list = mDataList;
int count = list.size();
final List<String> nlist = new ArrayList<>(count);
String FilterableString;
for (int i = 0; i < count; i++) {
FilterableString = list.get(i).data;
if (FilterableString.toLowerCase().contains(filterString)) {
mDataList.contains(FilterableString);
Log.d("mDataList", ""+mDataList.get(i).data);
nlist.add(FilterableString);
}
}
results.values = nlist;
results.count = nlist.size();
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filtered = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
int pos = 0;
String s = "";
if (convertView == null) {
convertView = View.inflate(ListActivity.this, R.layout.sample_list_item, null);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
ListData item = getItem(position);
s = item.data.substring(0, 1);
holder.textView.setText(item.data);
for (pos = 0; pos > mDataList.size(); pos++) {
s = mDataList.get(pos).data.substring(0, 1);
}
convertView.findViewById(R.id.imageView);
return convertView;
}
}
private class ViewHolder {
private View view;
private ImageView imageView, checkIcon;
private TextView textView;
private ViewHolder(View view) {
this.view = view;
imageView = (ImageView) view.findViewById(R.id.imageView);
textView = (TextView) view.findViewById(R.id.textView);
checkIcon = (ImageView) view.findViewById(R.id.check_icon);
}
}
}