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我想添加一个搜索文本框到我的列表视图，以便做一些过滤和我的列表适配器使用自定义对象而不是简单的字符串。该搜索似乎乍一看，但适配器不更新，如果我删除过滤字符串。ListView过滤问题Android
下面是我曾尝试：
这是我的自定义ArrayAdapter：
public class ArticolAdapter extends OrderManagerAdapter<Articol> implements Scrollable {
private List<Articol> orderList;
private final LayoutInflater inflater;
private final Context context;
public ArticolAdapter(Context context, List<Articol> objects) {
super(context, objects);
this.inflater = LayoutInflater.from(context);
this.orderList = objects;
this.context = context;
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.item_articol, parent, false);
holder = new ViewHolder();
holder.name = (TextView) convertView.findViewById(R.id.numeTV);
holder.deLivrat = (TextView) convertView.findViewById(R.id.de_livrat);
holder.articolPoza = (ImageView) convertView.findViewById(R.id.pictureCategory);
holder.observatiiTV = (TextView) convertView.findViewById(R.id.observatii);
holder.incarcatTV = (TextView) convertView.findViewById(R.id.incarcat);
holder.background = (RelativeLayout) convertView.findViewById(R.id.expandable_toggle_button);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
final Articol articol = getItem(position);
holder.name.setText(articol.getNume());
System.out.println(articol.getNume());
holder.deLivrat.setText("De livrat: " + Constants.DF.format(articol.getComandat()));
holder.incarcatTV.setText("Incarcat: " + fmt(articol.getIncarcat()));
holder.observatiiTV.setText("Observatii: " + articol.getObservatii());
holder.background.setPadding(5, 5, 5, 5);
if (articol.getComandat() == articol.getIncarcat()) {
holder.background.setBackground(context.getResources().getDrawable(R.drawable.list_item_completed));
} else {
holder.background.setBackground(context.getResources().getDrawable(R.drawable.list_item_bg));
}
return convertView;
}
public static String fmt(double d) {
if (d == (int) d)
return String.format("%d", (int) d);
else
return String.format("%s", d);
}
@Override
public String getIndicatorForPosition(int childposition, int groupposition) {
return Character.toString(orderList.get(childposition).getNume().charAt(0));
}
@Override
public int getScrollPosition(int childposition, int groupposition) {
return childposition;
}
private class ViewHolder {
private TextView name, deLivrat, observatiiTV, incarcatTV;
private ImageView articolPoza;
private RelativeLayout background;
}
private List<Articol> orig;
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
final FilterResults oReturn = new FilterResults();
final ArrayList<Articol> results = new ArrayList<Articol>();
if (orig == null) {
orig = orderList;
}
if (constraint != null) {
if (orig != null && orig.size() > 0) {
for (final Articol g : orig) {
if (g.getNume().toLowerCase()
.contains(constraint.toString())) {
results.add(g);
}
}
}
oReturn.values = results;
}
return oReturn;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
orderList = (ArrayList<Articol>) results.values;
notifyDataSetChanged();
clear();
for (Articol anOrderList : orderList) {
add(anOrderList);
}
notifyDataSetInvalidated();
}
};
}
}
的OrderManagerAdapter：
public class OrderManagerAdapter<T> extends ArrayAdapter<T> {
private final List<T> objects;
private final Object mLock;
public OrderManagerAdapter(Context context) {
super(context, 0);
objects = new ArrayList<T>();
mLock = new Object();
setNotifyOnChange(false);
}
public OrderManagerAdapter(Context context, List<T> objects) {
super(context, 0);
this.objects = objects;
mLock = new Object();
}
@Override
public void add(T object) {
synchronized (mLock) {
objects.add(object);
}
}
@Override
public void addAll(Collection<? extends T> collection) {
synchronized (mLock) {
objects.addAll(collection);
}
}
@Override
public void insert(T object, int index) {
synchronized (mLock) {
objects.add(index, object);
}
}
@Override
public void remove(T object) {
synchronized (mLock) {
objects.remove(object);
}
}
@Override
public void clear() {
synchronized (mLock) {
objects.clear();
}
}
@Override
public int getCount() {
return objects.size();
}
@Override
public T getItem(int position) {
return objects.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getPosition(T item) {
return objects.indexOf(item);
}
public List<T> getObjects() {
return objects;
}
}
，这是我的片段里面EditText代码：
EditText inputSearch = (EditText) rootView.findViewById(R.id.inputSearch);
inputSearch.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) {
}
@Override
public void afterTextChanged(Editable s) {
Log.d(Constants.TAG, "*** Search value changed: " + s.toString());
adapter.getFilter().filter(s);
}
});
搜索似乎是第一次过滤的工作，在某种意义上说，我键入一些过滤器字符串，列表得到更新，但是当我清除文本我看不到显示的原始列表，我得到一个空的列表。
因为你可能会删除列表中的所有元素listList显示代码适配器 – KOTIOS
更新与适配器代码 –