ActionBar Vista Busqueda

ic_action_search

MyActivity.java

import android.os.Bundle;
import android.support.v4.view.MenuItemCompat;
import android.support.v4.view.MenuItemCompat.OnActionExpandListener;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.SearchView.OnQueryTextListener;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;

public class MyActivity extends ActionBarActivity implements OnQueryTextListener, OnActionExpandListener {

    private TextView texto;

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

        texto = (TextView) findViewById(R.id.texto);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.my, menu);

        MenuItem searchItem = menu.findItem(R.id.menu3_buscar);

        SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
        searchView.setOnQueryTextListener(this);

        MenuItemCompat.setOnActionExpandListener(searchItem, this);

        return super.onCreateOptionsMenu(menu);
    }

    /*
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }*/

    @Override
    public boolean onMenuItemActionExpand(MenuItem item) {
        Toast.makeText(getApplicationContext(), "EXPAND", Toast.LENGTH_SHORT).show();
        return true;
    }

    @Override
    public boolean onMenuItemActionCollapse(MenuItem item) {
        Toast.makeText(getApplicationContext(), "COLLAPSE", Toast.LENGTH_SHORT).show();
        return true;
    }

    @Override
    public boolean onQueryTextSubmit(String s) {
        texto.setText("Texto a buscar\n\n" + s);
        return false;
    }

    @Override
    public boolean onQueryTextChange(String s) {
        texto.setText("Escribiendo texto...\n\n" + s);
        return false;
    }
}

activity_my.xml (dentro la carpeta layout)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MyActivity">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/texto" />
</RelativeLayout>

my.xml (dentro la carpeta menu)

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MyActivity" >
    <item
        android:id="@+id/menu3_buscar"
        android:title="buscar"
        android:icon="@drawable/ic_action_search"
        app:showAsAction="ifRoom|collapseActionView"
        app:actionViewClass="android.support.v7.widget.SearchView"/>

</menu>