AutoComplete 자동완성기능

<?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" >

    <TextView
        android:id="@+id/selection"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
         />
    <AutoCompleteTextView 
        android:id="@+id/edit"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:completionThreshold="3"
        />
    
    <!--   android:completionThreshold="3" 3글자 이상 입력시
			(AutoCompleteTextView) 는 평소에 숨겨져 있다가 위에 조건이 만족하면 출력됨    
			여러개의 데이터를 표시할때는 listview가 좋다
     -->
</LinearLayout>

package com.commonsware.android.selection9;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.TextView;

public class AutoCompleteDemo extends Activity implements TextWatcher {
	TextView selection;
	AutoCompleteTextView edit;
	String[] items = { "lorem", "ipsum", "dolor", "sit", "amet",
			"consectueuer", "adipiscing", "elit", "morbi", "vel", "ligula",
			"vitae", "arcu", "aliquet", "mollis", "etiam", "vel", "erat",
			"placerat", "ante", "porttitor", "길다", "많다", "너무 많다", "너무 길다", };

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		selection = (TextView) findViewById(R.id.selection);
		edit = (AutoCompleteTextView) findViewById(R.id.edit);
		edit.addTextChangedListener(this);

		//ArrayAdapter : AutoCompleteTextView 데이터 바인딩
		//ArrayAdapter와 AutoCompleteTextView 연결
		edit.setAdapter(new ArrayAdapter(this,
				android.R.layout.simple_dropdown_item_1line, items));
	}

	public void afterTextChanged(Editable s) {
		// TODO Auto-generated method stub

	}

	public void beforeTextChanged(CharSequence s, int start, int count,
			int after) {
		// TODO Auto-generated method stub

	}

	public void onTextChanged(CharSequence s, int start, int before, int count) {
		selection.setText(edit.getText());

	}
}