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POAndroid: help Text Watcher , List compare .logical error with afterTextChanged
 

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  1. POAndroid: help Text Watcher , List compare .logical error with afterTextChanged
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    <p>facing problem in searching and displaying the list using text watcher. it is a simple search operation in the List. firstly the data is retrieved from the .txt line by line. first word of string is stored in the list <strong>content</strong> and now i want to perform search operation on this <strong>content</strong> list and display the result in <strong>listview</strong> </p> <p>here is the code</p> <pre><code>enter code here package com.android; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.LineNumberReader; import java.util.ArrayList; import java.util.List; import java.util.StringTokenizer; import android.app.ListActivity; import android.os.Bundle; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.View; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.ListView; import android.widget.TextView; public class MyListDemoActivity extends ListActivity { /** Called when the activity is first created. */ TextView tv; // final String[] values=new String[]{"android","Windows", // "ios","BlackBerry","Java",".Net","WebOS", "Ubuntu", "Windows7"}; //String[] content; List&lt;String&gt; content ; AutoCompleteTextView actv; List&lt;String&gt; arr_sort; ArrayAdapter&lt;String&gt; adapter; ListView lv; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); String line = " "; LineNumberReader linenoreader = null; StringTokenizer stringtokanixer = null; content=new ArrayList&lt;String&gt;(); lv=(ListView)findViewById(android.R.id.list); try { InputStream istream = getResources().openRawResource(R.raw.hihihi); InputStreamReader streamreader = new InputStreamReader(istream); linenoreader = new LineNumberReader(streamreader); linenoreader.mark(15); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }// try catch ends here Log.v("getting", "working"); for (int i = 0; i &lt; 6; i++) { try { line = linenoreader.readLine(); } catch (IOException e) { e.printStackTrace(); } Log.v("getting", line); stringtokanixer = new StringTokenizer(line); String st=stringtokanixer.nextToken(); content.add(st); }// for ends here adapter=new ArrayAdapter&lt;String&gt;(this,android.R.layout.simple_list_item_1,content); // setListAdapter(adapter); lv.setAdapter(adapter); tv= (TextView)findViewById(R.id.textView1); actv=(AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1); actv.addTextChangedListener(new TextWatcher() { int len=0; @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // TODO Auto-generated method stub } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } @Override public void afterTextChanged(Editable s) { // TODO Auto-generated method stub len=actv.getText().length(); for(int i=0;i&lt;content.size();i++) { if(len&lt;=content.get(i).length()) { if(actv.getText().toString().equalsIgnoreCase((String) content.get(i).subSequence(0, len))) { arr_sort.add(content.get(i)); } } } adapter=new ArrayAdapter&lt;String&gt;(MyListDemoActivity.this,android.R.layout.simple_list_item_1,arr_sort); setListAdapter(adapter); } }); // text watcher class ends here }// on create ends here public void onListItemClick(ListView ls,View v, int position,long id) { tv.setText(content.get(position)); //tv.setText(content[position]) // in case of string }// endsd here onListItemClick( } </code></pre> <p>here is the main.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;AutoCompleteTextView android:id="@+id/autoCompleteTextView1" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=" " &gt; &lt;/AutoCompleteTextView&gt; &lt;TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="TextView" /&gt; &lt;ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="fill_parent" android:drawSelectorOnTop="false" &gt; &lt;/ListView&gt; &lt;/LinearLayout&gt; </code></pre> <p>here is txt file</p> <pre><code>joke happy hota happy okgame ok happy okgame asitis happy okgame happy oktested happy happy </code></pre> <p>i guess there is logical error in afterTextChanged but cant figure it out.</p>
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