我有一个数组适配器，如下所示。并且我已经实现了一个 Filterable，但是当我输入 EditText 时也没有任何反应。
public class CustomAdapter extends ArrayAdapter<Custom> implements Filterable{
private ArrayList<Custom> entries;
private Activity activity;
private Context context;
private qrusers qrusers;
CustomFilter customFilter;
private String[] udis;
ArrayList<String> userid= new ArrayList<String>();
boolean[] checkBoxState;
LayoutInflater vi;
public CustomAdapter(Context context, ArrayList<Custom> entries,String []udis) {
super(context,0,entries);
this.entries = entries;
this.context= context;
this.udis=udis;
checkBoxState=new boolean[entries.size()];
this.qrusers =(qrusers) context;
vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public static class ViewHolder{
public TextView item1;
public TextView item2;
public CheckBox chek;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View v = convertView;
ViewHolder holder;
if (v == null) {
v = vi.inflate(R.layout.checkboxlist, null);
holder = new ViewHolder();
holder.item1 = (TextView) v.findViewById(R.id.contactname);
holder.item2 = (TextView) v.findViewById(R.id.companyname);
holder.chek=(CheckBox)v.findViewById(R.id.checboxlist);
v.setTag(holder);
}
else{
holder=(ViewHolder)v.getTag();
}
holder.chek.setChecked(checkBoxState[position]);
holder.chek.setTag(udis[position]);
holder.chek.setOnClickListener(new OnClickListener() {
private String s;
@Override
public void onClick(View v) {
if (((CheckBox) v).isChecked()){
checkBoxState[position]=true;
// isChecked=true;
s=(String)v.getTag();
Log.e("IDDDDDDDD", s);
userid.add(s);
Log.e("ADDED ID", userid.toString());
}
else{
checkBoxState[position]=false;
s=(String)v.getTag();
userid.remove(s);
Log.e("Removed ID", userid.toString());
}
}
}
);
final Custom custom = entries.get(position);
if (custom != null) {
holder.item1.setText(custom.getcustomBig());
holder.item2.setText(custom.getcustomSmall());
}
return v;
}
public Filter getFilter() {
if (customFilter == null) {
customFilter = new CustomFilter();
}
return customFilter;
}
public ArrayList<String> getUserid() {
return userid;
}
public void setUserid(ArrayList<String> userid) {
this.userid = userid;
}
private class CustomFilter extends Filter{
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if(constraint == null || constraint.length() == 0) {
results.values=entries;
results.count = entries.size();
}
else{
ArrayList<Custom> newValues = new ArrayList<Custom>();
for (Custom i : entries){
if (i.toString().toUpperCase().startsWith(constraint.toString().toUpperCase()))
newValues.add(i);
}
}
// TODO Auto-generated method stub
return results;
}
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
if (results.count == 0){
notifyDataSetInvalidated();
}
else{
@SuppressWarnings("unchecked")
ArrayList<Custom> lst = (ArrayList<Custom>)results.values;
ArrayList<Custom> itemsList = new ArrayList<Custom>(lst);
//this.items=mItems;
entries =itemsList;
notifyDataSetChanged();
}
}
}
}
在我的 Activity 中，我正在使用这段代码。
usersearch1.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
s=usersearch1.getText().toString();
adapter.getFilter().filter(s);
Log.e("ALPHABETS", usersearch1.getText().toString());
//sendadapter.getFilter().filter(s);
}
最佳答案
您的 publishResults() 方法应该如下所示:
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results.count == 0){
notifyDataSetInvalidated();
} else {
@SuppressWarnings("unchecked")
ArrayList<Custom> lst = (ArrayList<Custom>)results.values;
ArrayList<Custom> itemsList = new ArrayList<Custom>(lst);
entries = itemsList;
clear();
for (Custom item : entries) {
add(item);
}
}
}
关于android - 在 listview 上过滤自定义适配器在 android 中无法正常工作？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21573853/