ListView using ArrayAdapter and search feature

activity_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:orientation="vertical" >

    <EditText android:id="@+id/inputSearch"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:hint="Search products.."
              android:inputType="textVisiblePassword"/>

    <ListView
            android:id="@+id/list_view"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />

</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.tassioauad.listviewsearch"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="16" />

    <uses-permission android:name="android.permission.READ_CONTACTS" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.tassioauad.listviewsearch.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <TextView android:id="@+id/product_name"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:padding="10dip"
              android:textSize="16dip"
              android:textStyle="bold"/>

</LinearLayout>

MainActivity.java

package com.tassioauad.listviewsearch;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Menu;
import android.widget.ListView;
import android.widget.EditText;
import android.widget.ArrayAdapter;
import java.util.ArrayList;
import java.util.HashMap;

public class MainActivity extends Activity {

    private ListView listView;

    ArrayAdapter<String> adapter;

    EditText editText;


    // ArrayList for Listview
    ArrayList<HashMap<String, String>> productList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String strings[] = {"Dell Inspiron", "HTC One X", "HTC Wildfire S", "HTC Sense", "HTC Sensation XE",
                "iPhone 4S", "Samsung Galaxy Note 800",
                "Samsung Galaxy S3", "MacBook Air", "Mac Mini", "MacBook Pro"};

        listView = (ListView) findViewById(R.id.list_view);
        editText = (EditText) findViewById(R.id.inputSearch);

        // Adding items to listview
        adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.product_name, strings);
        listView.setAdapter(adapter);

        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
                MainActivity.this.adapter.getFilter().filter(charSequence);
            }

            @Override
            public void afterTextChanged(Editable editable) {

            }
        });
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
}