org.apps8os.logger.android.MainActivity.java Source code

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Here is the source code for org.apps8os.logger.android.MainActivity.java

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package org.apps8os.logger.android;

/**
 * Copyright (c) 2013 Aalto University and the authors
 *
 * Permission is hereby granted, free of charge, to any person obtaining 
 * a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included 
 * in all copies or substantial portions of the Software.
 *  
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 *  
 * Authors:
 * Chao Wei (chao.wei@aalto.fi)
 */
import java.util.Locale;

import org.apps8os.logger.android.manager.AppManager;

import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager.OnBackStackChangedListener;
import android.support.v4.app.FragmentTransaction;
import android.text.TextUtils;
import android.view.View;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.view.MenuItem;

import fi.aalto.chaow.android.app.BaseFragmentActivity;
import fi.aalto.chaow.android.app.BaseFragmentActivity.OnSupportFragmentListener;

/**
 * 
 * Main activity (starting point) for the application.
 * 
 * @author Chao Wei
 *
 */
public class MainActivity extends BaseFragmentActivity
        implements OnSupportFragmentListener, OnBackStackChangedListener {

    private ActionBar mActionBar = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        getWindow().setFormat(PixelFormat.RGBA_8888);
        // update the locale
        final String lan = AppManager.getCurrentLocaleLanguage();
        if (!TextUtils.isEmpty(lan)) {
            LoggerApp.getInstance().updateLocale(new Locale(lan));
        }
        AppManager.refreshLocale();
        super.onCreate(savedInstanceState);
        setContentView(R.layout.act_main);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        getSupportFragmentManager().addOnBackStackChangedListener(this);
        setupActionBar();
        // root fragment
        onFragmentChanged(R.layout.frag_logger_panel, null);
    }

    private void setupActionBar() {
        // Set up the action bar.
        mActionBar = getSupportActionBar();
        mActionBar.setDisplayShowTitleEnabled(true);
        mActionBar.setDisplayOptions(
                ActionBar.DISPLAY_SHOW_HOME | ActionBar.DISPLAY_USE_LOGO | ActionBar.DISPLAY_SHOW_TITLE);
        mActionBar.setNavigationMode(ActionBar.DISPLAY_SHOW_CUSTOM);
        mActionBar.setHomeButtonEnabled(false);
        mActionBar.setDisplayShowCustomEnabled(true);
        if (AppManager.isLowDensityDevice(getApplicationContext())) {
            mActionBar.setDisplayShowTitleEnabled(false);
        }
    }

    @Override
    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        final int itemId = item.getItemId();
        if (itemId == android.R.id.home) {
            popBackStack();
            return true;
        }
        return super.onMenuItemSelected(featureId, item);
    }

    @Override
    public void onBackStackChanged() {
        final int backStackCount = getBackStackEntryCount();
        // if the current fragment is root, so change the action bar
        if (backStackCount == 1) {
            mActionBar.setHomeButtonEnabled(false);
            mActionBar.setDisplayHomeAsUpEnabled(false);
            mActionBar.getCustomView().setVisibility(View.VISIBLE);
        } else if (getBackStackEntryCount() == 0) {
            // no content shown, so quit
            finish();
        }
    }

    @Override
    public void onFragmentChanged(int layoutResId, Bundle bundle) {

        Fragment fragment = null;
        if (layoutResId == R.layout.frag_logger_panel) {
            fragment = new LoggerPanelFragment();
        } else if (layoutResId == R.layout.frag_logger_history) {
            fragment = new LoggerHistoryFragment();
        }

        if (fragment != null) {
            if (bundle != null) {
                fragment.setArguments(bundle);
            }
            FragmentTransaction transaction = getSupportFragmentTransaction();
            transaction.replace(R.id.screen_container, fragment, fragment.getTag());
            // Add to this transaction into BackStack
            transaction.addToBackStack(fragment.getTag());
            transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
            // Commit this transaction
            transaction.commit();
        }
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }

}