ModuleActivity.java

package de.boge.infosphere;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;

import de.boge.infosphere.module.ViewPagerAdapter;
import de.boge.infosphere.utils.NavDrawerHandler;

import android.os.Bundle;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class ModuleActivity extends SherlockFragmentActivity {
	private DrawerLayout navDrawerLayout;
	private ListView navDrawerList;
	private ActionBarDrawerToggle navDrawerToggle;
	private String[] navDrawerTitles;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_module);

		// Beginn Navigation-Drawer
		navDrawerTitles = getResources().getStringArray(R.array.hauptmenu_eintrage);
		navDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
		navDrawerList = (ListView) findViewById(R.id.left_drawer);

		navDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
		navDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, navDrawerTitles));
		navDrawerList.setOnItemClickListener(new DrawerItemClickListener());

		getSupportActionBar().setDisplayHomeAsUpEnabled(true);
		getSupportActionBar().setHomeButtonEnabled(true);

		navDrawerToggle = new ActionBarDrawerToggle(this, navDrawerLayout, R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close) {
			public void onDrawerClosed(View view) {
				supportInvalidateOptionsMenu();
			}

			public void onDrawerOpened(View drawerView) {
				supportInvalidateOptionsMenu();
			}
		};
		navDrawerLayout.setDrawerListener(navDrawerToggle);
		// Ende Navigation-Drawer
		
		// Beginn der Tabs
        final ActionBar mActionBar = getSupportActionBar();
        mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
 
        // View-Pager (zum horizontalen Wischen) einrichten
        final ViewPager mPager = (ViewPager) findViewById(R.id.pager);
        FragmentManager fm = getSupportFragmentManager();
        ViewPager.SimpleOnPageChangeListener ViewPagerListener = new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                super.onPageSelected(position);
                mActionBar.setSelectedNavigationItem(position);
            }
        };
        mPager.setOnPageChangeListener(ViewPagerListener);
        ViewPagerAdapter viewpageradapter = new ViewPagerAdapter(fm);
        mPager.setAdapter(viewpageradapter);

        ActionBar.TabListener tabListener = new ActionBar.TabListener() {
			@Override
			public void onTabSelected(Tab tab, FragmentTransaction ft) {
				mPager.setCurrentItem(tab.getPosition());
			}

			@Override
			public void onTabUnselected(Tab tab, FragmentTransaction ft) {}
			@Override
			public void onTabReselected(Tab tab, FragmentTransaction ft) {}
        };
 
        // Alle Tabs anlegen
        Tab tab = mActionBar.newTab().setText("Grundschule").setTabListener(tabListener);
        mActionBar.addTab(tab);

        tab = mActionBar.newTab().setText("Unterstufe").setTabListener(tabListener);
        mActionBar.addTab(tab);

        tab = mActionBar.newTab().setText("Mittelstufe").setTabListener(tabListener);
        mActionBar.addTab(tab);
        
        tab = mActionBar.newTab().setText("Oberstufe").setTabListener(tabListener);
        mActionBar.addTab(tab);
        // Ende der Tabs
	}
	
	/**
	 * Behandelt einen Klick im NavigationDrawer entsprechend
	 */
	private class DrawerItemClickListener implements ListView.OnItemClickListener {
		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
			NavDrawerHandler.entryClicked(position, getBaseContext(), ModuleActivity.this);
			navDrawerLayout.closeDrawer(navDrawerList);
		}
	}

	/**
	 * L�dt die Men�-Items
	 */
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getSupportMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	/**
	 * Blendet das Refresh-Icon aus, sobald der Navigation-Drawer ge�ffnet ist
	 */
	@Override
	public boolean onPrepareOptionsMenu(Menu menu) {
		boolean drawerOpen = navDrawerLayout.isDrawerOpen(navDrawerList);
		menu.findItem(R.id.action_refresh).setVisible(!drawerOpen);
		return super.onPrepareOptionsMenu(menu);
	}

	/**
	 * Behandelt einen Klick auf ein Men�-Item entsprechend
	 */
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		if (item.getItemId() == android.R.id.home) {
            if (navDrawerLayout.isDrawerOpen(navDrawerList)) {
            	navDrawerLayout.closeDrawer(navDrawerList);
            } else {
            	navDrawerLayout.openDrawer(navDrawerList);
            }
        } else if (item.getItemId() == R.id.action_refresh) {
        	Toast.makeText(this, "Aktualisiere...", Toast.LENGTH_SHORT).show();
        } else if (item.getItemId() == R.id.action_settings) {
        	startActivity(new Intent(ModuleActivity.this, SettingsActivity.class));
        } else if (item.getItemId() == R.id.action_about) {
        	AlertDialog.Builder builder = new AlertDialog.Builder(this);
        	builder.setTitle(R.string.about_title);
        	builder.setMessage(R.string.about_text);
        	builder.setPositiveButton(R.string.about_close, new DialogInterface.OnClickListener() {
        	           public void onClick(DialogInterface dialog, int id) {
        	              	dialog.cancel();
        	           }
        	       });
        	AlertDialog dialog = builder.create();
        	dialog.show();
        }
		
		return super.onOptionsItemSelected(item);
	}

	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		super.onConfigurationChanged(newConfig);
		navDrawerToggle.onConfigurationChanged(newConfig);
	}

	@Override
	protected void onPostCreate(Bundle savedInstanceState) {
		super.onPostCreate(savedInstanceState);
		navDrawerToggle.syncState();
	}
}