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POgetFilter() using BaseAdapter is throwing error
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I know there have posts on this topic but I couldn't found what's the problem in my code. After trying 2 days I am posting here. Here is my Adapter: <pre><code>public class CustomerListBaseAdapter extends BaseAdapter implements Filterable { private static ArrayList<CustAccountObject> CustArrayList; private LayoutInflater l_Inflater; public CustomerListBaseAdapter(Context context, ArrayList<CustAccountObject> results) { CustArrayList = results; l_Inflater = LayoutInflater.from(context); } public int getCount() { return CustArrayList.size(); } public Object getItem(int position) { return CustArrayList.get(position); } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { convertView = l_Inflater.inflate(R.layout.customer_list_format, null); holder = new ViewHolder(); holder.txt_custName = (TextView) convertView.findViewById(R.id.customer_name); holder.txt_custEmail = (TextView) convertView.findViewById(R.id.customer_email); holder.txt_custId = (TextView) convertView.findViewById(R.id.customer_id); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } holder.txt_custName.setText(CustArrayList.get(position).name); holder.txt_custEmail.setText(CustArrayList.get(position).email1); holder.txt_custId.setText(CustArrayList.get(position).pkid.toString()); return convertView; } static class ViewHolder { TextView txt_custName; TextView txt_custEmail; TextView txt_custId; } @Override public Filter getFilter() { Filter filter = new Filter() { @Override protected FilterResults performFiltering(CharSequence charSequence) { FilterResults results = new FilterResults(); //If there's nothing to filter on, return the original data for your list if(charSequence == null || charSequence.length() == 0) { results.values = CustArrayList; results.count = CustArrayList.size(); } else { ArrayList<CustAccountObject> filterResultsData = new ArrayList<CustAccountObject>(); String filterString = charSequence.toString().toLowerCase(); String filterableString; for(int i=0; i<CustArrayList.size(); i++) { filterableString = CustArrayList.get(i).toString(); if(filterableString.toLowerCase().contains(filterString)){ filterResultsData.add(CustArrayList.get(i)); } } results.values = filterResultsData; results.count = filterResultsData.size(); } return results; } @Override protected void publishResults(CharSequence charSequence, FilterResults filterResults) { CustArrayList = (ArrayList<CustAccountObject>)filterResults.values; notifyDataSetChanged(); } }; return filter; } } </code></pre> Here is my Activity: <pre><code> inputSearch.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { // When user changed the Text CustomerListActivity.this.adapter.getFilter().filter(cs); } @Override public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { // TODO Auto-generated method stub } @Override public void afterTextChanged(Editable arg0) { // TODO Auto-generated method stub } }); </code></pre> I have tried a debug but after coming to this <code>inputSearch.addTextChangedListener(new TextWatcher()</code> code App is crashing. My logcat: <pre><code>03-22 04:20:00.644: E/Trace(20950): error opening trace file: No such file or directory (2) 03-22 04:20:01.335: E/AndroidRuntime(20950): FATAL EXCEPTION: main 03-22 04:20:01.335: E/AndroidRuntime(20950): java.lang.RuntimeException: Unable to instantiate application asia.wavelet.android.application.MyApp: java.lang.NullPointerException 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.LoadedApk.makeApplication(LoadedApk.java:504) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4364) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.ActivityThread.access$1300(ActivityThread.java:141) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.os.Handler.dispatchMessage(Handler.java:99) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.os.Looper.loop(Looper.java:137) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.ActivityThread.main(ActivityThread.java:5039) 03-22 04:20:01.335: E/AndroidRuntime(20950): at java.lang.reflect.Method.invokeNative(Native Method) 03-22 04:20:01.335: E/AndroidRuntime(20950): at java.lang.reflect.Method.invoke(Method.java:511) 03-22 04:20:01.335: E/AndroidRuntime(20950): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 03-22 04:20:01.335: E/AndroidRuntime(20950): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 03-22 04:20:01.335: E/AndroidRuntime(20950): at dalvik.system.NativeStart.main(Native Method) 03-22 04:20:01.335: E/AndroidRuntime(20950): Caused by: java.lang.NullPointerException 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:379) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.LoadedApk.getClassLoader(LoadedApk.java:322) 03-22 04:20:01.335: E/AndroidRuntime(20950): at android.app.LoadedApk.makeApplication(LoadedApk.java:496) 03-22 04:20:01.335: E/AndroidRuntime(20950): ... 11 more 03-22 04:21:10.265: E/AndroidRuntime(20984): FATAL EXCEPTION: main 03-22 04:21:10.265: E/AndroidRuntime(20984): java.lang.NullPointerException 03-22 04:21:10.265: E/AndroidRuntime(20984): at asia.wavelet.android.customer.CustomerListActivity$RetreiveCustomer.onPostExecute(CustomerListActivity.java:237) 03-22 04:21:10.265: E/AndroidRuntime(20984): at asia.wavelet.android.customer.CustomerListActivity$RetreiveCustomer.onPostExecute(CustomerListActivity.java:1) 03-22 04:21:10.265: E/AndroidRuntime(20984): at android.os.AsyncTask.finish(AsyncTask.java:631) 03-22 04:21:10.265: E/AndroidRuntime(20984): at android.os.AsyncTask.access$600(AsyncTask.java:177) 03-22 04:21:10.265: E/AndroidRuntime(20984): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644) 03-22 04:21:10.265: E/AndroidRuntime(20984): at android.os.Handler.dispatchMessage(Handler.java:99) 03-22 04:21:10.265: E/AndroidRuntime(20984): at android.os.Looper.loop(Looper.java:137) 03-22 04:21:10.265: E/AndroidRuntime(20984): at android.app.ActivityThread.main(ActivityThread.java:5039) 03-22 04:21:10.265: E/AndroidRuntime(20984): at java.lang.reflect.Method.invokeNative(Native Method) 03-22 04:21:10.265: E/AndroidRuntime(20984): at java.lang.reflect.Method.invoke(Method.java:511) 03-22 04:21:10.265: E/AndroidRuntime(20984): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 03-22 04:21:10.265: E/AndroidRuntime(20984): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 03-22 04:21:10.265: E/AndroidRuntime(20984): at dalvik.system.NativeStart.main(Native Method) </code></pre> My AsyncTask class: <pre><code> class RetreiveCustomer extends AsyncTask<Void,Void,String> { protected void onPreExecute() { //display progress dialog. } protected String doInBackground(Void... params) { String json = null; try { boolean fromLocal = true; if(isOnline(getApplicationContext())) { try { URL url = new URL("http://192.168.0.177:8080/ws/api/customer/5"); HttpURLConnection con = (HttpURLConnection) url.openConnection(); int response = con.getResponseCode(); if (response == HttpURLConnection.HTTP_OK) { json = readStream(con.getInputStream()); fromLocal = false; } } catch (Exception e) { e.printStackTrace(); } } if(fromLocal) { Collection custCol = new Vector(); custCol = custBean.query(null, null, null, CustAccountBean.NAME); Gson gson = new Gson(); json = gson.toJson(custCol); } } catch (Exception e) { e.printStackTrace(); } return json; } private String readStream(InputStream in) { BufferedReader reader = null; String line = null; try { reader = new BufferedReader(new InputStreamReader(in)); line = reader.readLine(); } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } return line; } protected void onPostExecute(String result) { Collection custCol = new Vector(); Gson gson = new Gson(); Type token = new TypeToken<Collection<CustAccountObject>>() {}.getType(); custCol = gson.fromJson(result, token); // List<CustAccountObject> customers = new ArrayList<CustAccountObject>(custCol); // // lv = (ListView) findViewById(R.id.list); // inputSearch = (EditText) findViewById(R.id.customer_search); // // // Adding customers to listview // adapter = new ArrayAdapter<CustAccountObject>(getApplicationContext(), R.layout.list, R.id.name, customers); // lv.setAdapter(adapter); ArrayList<CustAccountObject> cust_details = GetSearchResults(custCol); lv = (ListView) findViewById(R.id.list); adapter = new CustomerListBaseAdapter(getApplicationContext(), cust_details); lv.setAdapter(adapter); // inputSearch.addTextChangedListener(new TextWatcher() { // // @Override // public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { // // When user changed the Text // CustomerListActivity.this.adapter.getFilter().filter(cs); // } // // @Override // public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, // int arg3) { // // TODO Auto-generated method stub // } // // @Override // public void afterTextChanged(Editable arg0) { // // TODO Auto-generated method stub // } // }); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> l, View v, int position, long id) { CustAccountObject custObj = (CustAccountObject) adapter.getItem(position); customerEdit(custObj.pkid); } }); } public boolean isOnline(Context context) { ConnectivityManager cm = (ConnectivityManager) getSystemService(context.CONNECTIVITY_SERVICE); NetworkInfo netInfo = cm.getActiveNetworkInfo(); if (netInfo != null && netInfo.isConnectedOrConnecting()) { return true; } return false; } private ArrayList<CustAccountObject> GetSearchResults(Collection custCol){ ArrayList<CustAccountObject> results = new ArrayList<CustAccountObject>(); Vector vecResult = new Vector(custCol); CustAccountObject custObj = new CustAccountObject(); for(int i=0; i<vecResult.size(); i++) { custObj = (CustAccountObject) vecResult.get(i); results.add(custObj); } return results; } } </code></pre>
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getFilter() using BaseAdapter is throwing error
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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