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Ich habe auf this, this also und this one too verwiesen. Nein, wo ich die Lösung meines Problems finde. Auf eingeben Bearbeiten von Text Keine Filterung ist da und Listenansicht bleibt, wie es Hier ist der Code:Suche funktioniert nicht in benutzerdefinierten Listenansicht
MainActivity.java
public class MainActivity extends AppCompatActivity implements OnItemClickListener {
public static final String[] titles = new String[] { "H C Verma",
"P Bahadur", "I E Irodov", "M L Khanna",
"O P Tondon", "Morrison & Boyd", "Halliday Resnick",
"R D Sharma", "S L Loney", "Hall and Knight", "Krotov", "I A Maron" };
public EditText search;
CustomAdapter adapter;
public static final String[] descriptions = new String[] {
"Physics",
"Chemistry",
"Physics",
"Mathematics",
"Chemistry",
"Chemistry",
"Physics",
"Mathematics",
"Mathematics",
"Chemistry",
"Physics",
"Mathematics"
};
public static final Integer[] images = { R.drawable.hcv,
R.drawable.bahadur, R.drawable.irodov, R.drawable.mlkhanna,
R.drawable.tondon, R.drawable.boyd, R.drawable.resnick, R.drawable.sharma,
R.drawable.loney, R.drawable.knight, R.drawable.krotov, R.drawable.maron};
public static final String[] pub = new String[]{"Bharti Bhavan", "G R Bathla Publications", "Arihant",
"Jai Prakash Nath", "G R Bathla Publications", "Pearson Publications",
"Wiley Publications", "Dhanpat Rai Publications","Classic Texts series","Classic Texts series","G K Publications","G K Publications"};
ListView listView;
List<RowItem> rowItems;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
search = (EditText)findViewById(R.id.inputSearch);
rowItems = new ArrayList<>();
for (int i = 0; i < titles.length; i++) {
RowItem item = new RowItem(images[i], titles[i], descriptions[i], pub[i]);
rowItems.add(item);
}
listView = (ListView) findViewById(R.id.list);
adapter = new CustomAdapter(this, rowItems);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
listView.setTextFilterEnabled(true);
search.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) {
System.out.println("Text ["+s+"]");
adapter.getFilter().filter(s.toString());
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Toast toast = Toast.makeText(getApplicationContext(),
"Item " + (position + 1) + ": " + rowItems.get(position),
Toast.LENGTH_SHORT);
toast.show();
}
}
CustomAdapter.java
public class CustomAdapter extends BaseAdapter implements Filterable{
List<RowItem> filteredData;
Context context;
List<RowItem> rowItems;
CustomFilter filter;
public CustomAdapter(Context context, List<RowItem> items) {
this.context = context;
this.rowItems = items;
this.filteredData = items;
}
@Override
public int getCount() {
return filteredData.size();
}
@Override
public Object getItem(int position) {
return filteredData.get(position);
}
@Override
public long getItemId(int position) {
return rowItems.indexOf(getItem(position));
}
/*private view holder class*/
private class ViewHolder {
ImageView imageView;
TextView txtTitle;
TextView txtDesc;
TextView pubname;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.txtDesc = (TextView) convertView.findViewById(R.id.desc);
holder.txtTitle = (TextView) convertView.findViewById(R.id.title);
holder.pubname = (TextView) convertView.findViewById(R.id.pub);
holder.imageView = (ImageView) convertView.findViewById(R.id.icon);
convertView.setTag(holder);
}
else {
holder = (ViewHolder) convertView.getTag();
}
RowItem rowItem = (RowItem) getItem(position);
holder.txtDesc.setText(rowItem.getDesc());
holder.txtTitle.setText(rowItem.getTitle());
holder.pubname.setText(rowItem.getPub());
holder.imageView.setImageResource(rowItem.getImageId());
return convertView;
}
public Filter getFilter() {
if(filter == null)
{
filter=new CustomFilter();
}
return filter;}
class CustomFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint != null && constraint.length() > 0) {
//CONSTARINT TO UPPER
constraint = constraint.toString().toUpperCase();
ArrayList<RowItem> filters = new ArrayList<RowItem>();
//get specific items
for (int i = 0; i < filteredData.size(); i++) {
if (filteredData.get(i).getTitle().toUpperCase().contains(constraint)) {
RowItem p = new RowItem(filteredData.get(i).getImageId(), filteredData.get(i).getTitle(), filteredData.get(i).getDesc(), filteredData.get(i).getPub());
filters.add(p);
}
}
results.count = filters.size();
results.values = filters;
} else {
results.count = filteredData.size();
results.values = filteredData;
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
// TODO Auto-generated method stub
if (results.count == 0) {
notifyDataSetInvalidated();
} else {
rowItems = (ArrayList<RowItem>) results.values;
notifyDataSetChanged();
}
}
}}
conten t_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="35dp"
android:orientation="vertical" >
<EditText android:id="@+id/inputSearch"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="45dp"
android:hint="Search Books.."
android:inputType="textVisiblePassword"/>
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:padding="20dip"
android:listSelector="@drawable/list_selector"
/>
</LinearLayout>
Bitte helfen Sie mir.
mit ArrayAdapter
public class CustomAdapter extends ArrayAdapter<RowItem> implements Filterable{
List<RowItem> filteredData;
Context context;
List<RowItem> rowItems;
CustomFilter filter;
public CustomAdapter(Context context, List<RowItem> items) {
super(context, R.layout.list_item);
this.context = context;
this.rowItems = items;
this.filteredData = items;
}
/* @Override
public int getCount() {
return filteredData.size();
}
@Override
public Object getItem(int position) {
return filteredData.get(position);
}
@Override
public long getItemId(int position) {
return rowItems.indexOf(getItem(position));
}*/
/*private view holder class*/
private class ViewHolder {
ImageView imageView;
TextView txtTitle;
TextView txtDesc;
TextView pubname;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.txtDesc = (TextView) convertView.findViewById(R.id.desc);
holder.txtTitle = (TextView) convertView.findViewById(R.id.title);
holder.pubname = (TextView) convertView.findViewById(R.id.pub);
holder.imageView = (ImageView) convertView.findViewById(R.id.icon);
convertView.setTag(holder);
}
else {
holder = (ViewHolder) convertView.getTag();
}
RowItem rowItem = (RowItem) getItem(position);
holder.txtDesc.setText(rowItem.getDesc());
holder.txtTitle.setText(rowItem.getTitle());
holder.pubname.setText(rowItem.getPub());
holder.imageView.setImageResource(rowItem.getImageId());
return convertView;
}
public Filter getFilter() {
if(filter == null)
{
filter=new CustomFilter();
}
return filter;}
class CustomFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint != null && constraint.length() > 0) {
//CONSTARINT TO UPPER
constraint = constraint.toString().toUpperCase();
ArrayList<RowItem> filters = new ArrayList<RowItem>();
//get specific items
for (int i = 0; i < filteredData.size(); i++) {
if (filteredData.get(i).getTitle().toUpperCase().contains(constraint)) {
RowItem p = new RowItem(filteredData.get(i).getImageId(), filteredData.get(i).getTitle(), filteredData.get(i).getDesc(), filteredData.get(i).getPub());
filters.add(p);
}
}
results.count = filters.size();
results.values = filters;
} else {
results.count = filteredData.size();
results.values = filteredData;
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
// TODO Auto-generated method stub
if (results.count == 0) {
notifyDataSetInvalidated();
} else {
rowItems = (ArrayList<RowItem>) results.values;
notifyDataSetChanged();
}
}
}
Warum benutzen Sie 'ArrayAdapter' nicht? Es ist 'filterable' also keine Notwendigkeit es zu implementieren – pskink
Sir @ pskink, ich versuchte zuerst ArrayAdapter, und in meiner vorherigen Frage habe ich erfahren, dass Basisadapter besser für benutzerdefinierte Listenansicht ist, und ArrayAdapter muss auch filterable http implementieren: //stackoverflow.com/questions/19122848/custom-getfilter-in-custom-arrayadapter-in-android –
nein: 'public class ArrayAdapter erweitert BaseAdapter implementiert filterable', so dass Sie es nicht implementieren müssen –
pskink