com.iangclifton.auid.appendixc.MainActivity.java Source code

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Here is the source code for com.iangclifton.auid.appendixc.MainActivity.java

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/*
 * 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;

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

import com.iangclifton.auid.appendixc.sections.Section;
import com.iangclifton.auid.appendixc.sections.SectionActivity;

/**
 * An activity representing a list of Sections. This activity has different
 * presentations for handset and tablet-size devices. On handsets, the activity
 * presents a list of items, which when touched, lead to a
 * {@link SectionActivity} representing item details. On tablets, the
 * activity presents the list of items and item details side-by-side using two
 * vertical panes.
 * <p>
 * The activity makes heavy use of fragments. The list of items is a
 * {@link SectionListFragment} and the item details (if present) is a
 * {@link SectionDetailFragment}.
 * <p>
 * This activity also implements the required
 * {@link SectionListFragment.Callbacks} interface to listen for item
 * selections.
 */
public class MainActivity extends FragmentActivity implements SectionListFragment.Callbacks {

    /**
     * Whether or not the activity is in two-pane mode, i.e. running on a tablet
     * device.
     */
    private boolean mTwoPane;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        getWindow().requestFeature(Window.FEATURE_PROGRESS);
        setProgressBarIndeterminate(true);

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_section_list);

        if (findViewById(R.id.section_detail_container) != null) {
            // The detail container view will be present only in the
            // large-screen layouts (res/values-large and
            // res/values-sw600dp). If this view is present, then the
            // activity should be in two-pane mode.
            mTwoPane = true;

            // In two-pane mode, list items should be given the
            // 'activated' state when touched.
            ((SectionListFragment) getSupportFragmentManager().findFragmentById(R.id.section_list))
                    .setActivateOnItemClick(true);
        }

    }

    /**
     * Callback method from {@link SectionListFragment.Callbacks} indicating
     * that the item with the given ID was selected.
     */
    @Override
    public void onItemSelected(Section section) {
        if (mTwoPane) {
            Fragment fragment = section.getFragment();
            getSupportFragmentManager().beginTransaction().replace(R.id.section_detail_container, fragment)
                    .commit();
        } else {
            // In single-pane mode, simply start the detail activity
            // for the selected item ID.
            Intent detailIntent = new Intent(this, SectionActivity.class);
            detailIntent.putExtra(SectionActivity.ARG_SECTION, section);
            startActivity(detailIntent);
        }
    }
}