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    copied!<p>Perhaps this may help you:</p> <pre><code>import java.util.ArrayList; import java.util.Arrays; import java.util.List; import android.content.Context; import android.util.Log; import android.widget.ArrayAdapter; import android.widget.Filter; public class CustomAdapter&lt;T&gt; extends ArrayAdapter&lt;T&gt; { private final ArrayList&lt;T&gt; mOriginalValues; private List&lt;T&gt; mObjects; private CustomFilter mFilter; private final Object mLock = new Object(); public CustomAdapter(Context context, int textViewResourceId, T[] objects) { super(context, textViewResourceId, objects); mObjects = Arrays.asList(objects); mOriginalValues = (ArrayList&lt;T&gt;) Arrays.asList(objects); // TODO Auto-generated constructor stub } @Override public Filter getFilter() { // TODO Auto-generated method stub if (mFilter == null) { mFilter = new CustomFilter(); } return mFilter; } private class CustomFilter extends Filter { @Override protected FilterResults performFiltering(CharSequence prefix) { FilterResults results = new FilterResults(); Log.d("bajji", "its ---&gt; " + prefix); if (prefix == null || prefix.toString().trim().length() == 0) { ArrayList&lt;T&gt; list; synchronized (mLock) { list = new ArrayList&lt;T&gt;(mOriginalValues); } results.values = list; results.count = list.size(); } else { String prefixString = prefix.toString().toLowerCase(); ArrayList&lt;T&gt; values; synchronized (mLock) { values = new ArrayList&lt;T&gt;(mOriginalValues); } final int count = values.size(); final ArrayList&lt;T&gt; newValues = new ArrayList&lt;T&gt;(); final ArrayList&lt;T&gt; approxValues = new ArrayList&lt;T&gt;(); final ArrayList&lt;T&gt; secondApproxValues = new ArrayList&lt;T&gt;(); for (int i = 0; i &lt; count; i++) { final T value = values.get(i); final String valueText = value.toString().toLowerCase(); boolean flag = true; // First match against the whole, non-splitted value if (valueText.startsWith(prefixString)) { newValues.add(value); flag = false; } else { final String[] words = valueText.split(" "); final int wordCount = words.length; // Start at index 0, in case valueText starts with space(s) for (int k = 0; k &lt; wordCount; k++) { if (words[k].startsWith(prefixString)) { newValues.add(value); flag = false; break; } } } if(flag) { if(approxMatch(valueText, prefixString) &lt;= 3) { //change the stuff and do a levi work approxValues.add(value); } else { final String[] words = valueText.split(" "); final int wordCount = words.length; // Start at index 0, in case valueText starts with space(s) for (int k = 0; k &lt; wordCount; k++) { if(approxMatch(words[k], prefixString) &lt;= 3) { //leve work secondApproxValues.add(value); break; } } } } } newValues.addAll(approxValues); newValues.addAll(secondApproxValues); results.values = newValues; results.count = newValues.size(); } return results; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { //noinspection unchecked mObjects = (List&lt;T&gt;) results.values; notifyDataSetChanged(); clear(); for(T tmp : mObjects){ add(tmp); } notifyDataSetChanged(); } } private int approxMatch (String s, String t) { // an approxmimate string matching algo return p; } } </code></pre> <p>Now in <code>getView</code> method of adapter, you need to refer to <strong>mObjects</strong> object to get recent available values for ListView</p>
 

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