AutoCompleteTextView

list_ite.xml

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:textColor="#000"
    android:padding="10dp"
    android:textSize="16sp" >
</TextView>

Layout.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        >
        
    <TextView 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Country"   
        />
    
    <AutoCompleteTextView 
        android:id="@+id/autocomplete_country"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        />
    
</LinearLayout>

MainActivity.java

public class MainActivity extends Activity {
	static final String[] countries = new String[] { "Africa", "Belarus",
			"china", "changchun" };
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autocomplete_country);
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
				R.layout.list_item, countries);
		textView.setAdapter(adapter);
	}
}