Android Program to Demonstrate Action View

package com.example.action_view;
 
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
 
@SuppressLint("NewApi")
public class MainActivity extends Activity {
 
    private MenuItem menuItem;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ActionBar actionBar = getActionBar();
        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_HOME
                | ActionBar.DISPLAY_SHOW_TITLE | ActionBar.DISPLAY_SHOW_CUSTOM);
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
 
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.menu_load:
            menuItem = item;
            menuItem.setActionView(R.layout.progressbar);
            menuItem.expandActionView();
            TestTask task = new TestTask();
            task.execute("test");
            break;
        default:
            break;
        }
        return true;
    }
 
    private class TestTask extends AsyncTask<String, Void, String> {
 
        @Override
        protected String doInBackground(String... params) {
            // Simulate something long running
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            return null;
        }
 
        @Override
        protected void onPostExecute(String result) {
            menuItem.collapseActionView();
            menuItem.setActionView(null);
        }
    };
}