samples/ActionBarCompat/src/com/example/android/actionbarcompat/MainActivity.java

/*
 * Copyright 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.actionbarcompat;

import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
    private boolean mAlternateTitle = false;

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

        findViewById(R.id.toggle_title).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mAlternateTitle) {
                    setTitle(R.string.app_name);
                } else {
                    setTitle(R.string.alternate_title);
                }
                mAlternateTitle = !mAlternateTitle;
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(R.menu.main, menu);

        // Calling super after populating the menu is necessary here to ensure that the
        // action bar helpers have a chance to handle this event.
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                Toast.makeText(this, "Tapped home", Toast.LENGTH_SHORT).show();
                break;

            case R.id.menu_refresh:
                Toast.makeText(this, "Fake refreshing...", Toast.LENGTH_SHORT).show();
                getActionBarHelper().setRefreshActionItemState(true);
                getWindow().getDecorView().postDelayed(
                        new Runnable() {
                            @Override
                            public void run() {
                                getActionBarHelper().setRefreshActionItemState(false);
                            }
                        }, 1000);
                break;

            case R.id.menu_search:
                Toast.makeText(this, "Tapped search", Toast.LENGTH_SHORT).show();
                break;

            case R.id.menu_share:
                Toast.makeText(this, "Tapped share", Toast.LENGTH_SHORT).show();
                break;
        }
        return super.onOptionsItemSelected(item);
    }
}