<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/container"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical"

    tools:context="com.example.mar_2300_autocompletetextview.MainActivity"

    tools:ignore="MergeRootFrame" >

<AutoCompleteTextView android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:id="@+id/atv"/>

<TextView android:id="@+id/textView1"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"/>

</LinearLayout>

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

<resources>

    <string name="app_name">Mar_2300_AutoCompleteTextView</string>

    <string name="hello_world">Hello world!</string>

    <string name="action_settings">Settings</string>

    <string-array name="test">

        <item>Mercury</item>

        <item>Mercury2</item>

        <item>Venus</item>

        <item>Earth</item>

        <item>Mars</item>

        <item>Jupiter</item>

        <item>Saturn</item>

        <item>Uranus</item>

        <item>Neptune</item>

    </string-array>

</resources>

package com.example.mar_2300_autocompletetextview;

import android.support.v7.app.ActionBarActivity;

import android.support.v7.app.ActionBar;

import android.support.v4.app.Fragment;

import android.text.Editable;

import android.text.TextWatcher;

import android.app.Activity;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.TextView;

import android.os.Build;

public class MainActivity extends Activity implements TextWatcher {

    private AutoCompleteTextView atv;

    private TextView tv;

    private ArrayAdapter<CharSequence> adapter;

    @Override

    public void afterTextChanged(Editable s) {

        // 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 onTextChanged(CharSequence s, int start, int before, int count) {

        // TODO Auto-generated method stub

        tv.setText(atv.getText());

    }

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        atv = (AutoCompleteTextView) findViewById(R.id.atv);

        tv = (TextView) findViewById(R.id.textView1);

        adapter = ArrayAdapter.createFromResource(this, R.array.test,

                android.R.layout.simple_dropdown_item_1line);

        atv.setAdapter(adapter);

        atv.addTextChangedListener(this);

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

}