BaseActionBarActivity.java

package com.google.mcommerce.sample.android.chapter04.actionBar;

import android.app.ActionBar;
import android.app.SearchManager;
import android.app.SearchableInfo;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.SearchView;
import android.widget.TextView;

import com.google.mcommerce.sample.android.R;

public abstract class BaseActionBarActivity extends DebugActivity {
	private String tag = null;

	public BaseActionBarActivity(String inTag) {
		super(R.menu.c04_menu, R.layout.c04_actionbar_main, R.id.textViewId,
				inTag);
		tag = inTag;
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		TextView tv = this.getTextView();
		tv.setText(tag);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);
		this.setupSearchView(menu);
		return true;
	}

	protected boolean onMenuItemSelected(MenuItem item) {
		if (item.getItemId() == android.R.id.home) {
			this.reportBack(tag, "Home Pressed");
			return true;
		}

		if (item.getItemId() == R.id.menu_invoke_tabnav) {
			if (getNavMode() == ActionBar.NAVIGATION_MODE_TABS) {
				this.reportBack(tag, "You are already in tab nav");
			} else {
				this.invokeTabNav();
			}
			return true;
		}
		if (item.getItemId() == R.id.menu_invoke_listnav) {
			if (getNavMode() == ActionBar.NAVIGATION_MODE_LIST) {
				this.reportBack(tag, "You are already in list nav");
			} else {
				this.invokeListNav();
			}
			return true;
		}
		if (item.getItemId() == R.id.menu_invoke_standardnav) {
			if (getNavMode() == ActionBar.NAVIGATION_MODE_STANDARD) {
				this.reportBack(tag, "You are already in standard nav");
			} else {
				this.invokeStandardNav();
			}
			return true;
		}
		return false;
	}

	private int getNavMode() {
		ActionBar bar = this.getActionBar();
		return bar.getNavigationMode();
	}

	private void invokeTabNav() {
		Intent i = new Intent(this, TabNavigationActionBarActivity.class);
		startActivity(i);
	}

	private void invokeListNav() {
		Intent i = new Intent(this, ListNavigationActionBarActivity.class);
		startActivity(i);
	}

	private void invokeStandardNav() {
		Intent i = new Intent(this, StandardNavigationActionBarActivity.class);
		startActivity(i);
	}

	private void setupSearchView(Menu menu) {
		SearchView searchView = (SearchView) menu.findItem(R.id.menu_search)
				.getActionView();
		if (searchView == null) {
			this.reportBack(tag, "Failed to get search view");
			return;
		}
		// setup searchview
		SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
		ComponentName cn = new ComponentName(this, SearchResultsActivity.class);
		SearchableInfo info = searchManager.getSearchableInfo(cn);
		if (info == null) {
			this.reportBack(tag, "Failed to get search info");
			return;
		}

		searchView.setSearchableInfo(info);

		// Do not iconify the widget; expand it by default
		searchView.setIconifiedByDefault(false);

	}
}// eof-class