SectionActivity.java

/*
 * Copyright (C) 2013 Ian G. Clifton
 * Code featured in Android User Interface Design: Turning Ideas and
 * Sketches into Beautifully Designed Apps (ISBN-10: 0321886739;
 * ISBN-13: 978-0321886736).
 *
 * 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.iangclifton.auid.appendixc.sections;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.NavUtils;
import android.view.MenuItem;
import android.view.Window;

import com.iangclifton.auid.appendixc.MainActivity;
import com.iangclifton.auid.appendixc.R;

/**
 * Shell Activity that hosts a single Fragment for smaller devices.
 * 
 * @author Ian G. Clifton
 */
public class SectionActivity extends FragmentActivity {
	
	public static final String ARG_SECTION = "section";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		getWindow().requestFeature(Window.FEATURE_PROGRESS);
		setProgressBarIndeterminate(true);
		
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_section_detail);
		final Section section = (Section) getIntent().getSerializableExtra(ARG_SECTION);
		setTitle(section.getTitleResourceId());

		// Show the Up button in the action bar.
		getActionBar().setDisplayHomeAsUpEnabled(true);

		// savedInstanceState is non-null when there is fragment state
		// saved from previous configurations of this activity
		// (e.g. when rotating the screen from portrait to landscape).
		// In this case, the fragment will automatically be re-added
		// to its container so we don't need to manually add it.
		// For more information, see the Fragments API guide at:
		//
		// http://developer.android.com/guide/components/fragments.html
		//
		if (savedInstanceState == null) {
			final Fragment fragment = section.getFragment();
			getSupportFragmentManager().beginTransaction().add(R.id.section_detail_container, fragment).commit();
		}
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case android.R.id.home:
			// This ID represents the Home or Up button. In the case of this
			// activity, the Up button is shown. Use NavUtils to allow users
			// to navigate up one level in the application structure. For
			// more details, see the Navigation pattern on Android Design:
			//
			// http://developer.android.com/design/patterns/navigation.html#up-vs-back
			//
			NavUtils.navigateUpTo(this, new Intent(this, MainActivity.class));
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}