Android Open Source - cost-tracker Tracker Manager Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.helpguest.droid;
/*from  w  w w .java  2  s .  c o  m*/
import java.util.ArrayList;
import java.util.Locale;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import com.helpguest.droid.tracker.ITracker;
import com.helpguest.droid.tracker.ITrackerManager;
import com.helpguest.droid.tracker.OnTrackerManagerChangeListener;
import com.helpguest.droid.tracker.PersistentTrackerManager;
import com.helpguest.droid.tracker.SimpleTracker;
import com.helpguest.droid.tracker.TrackerEvent;

public class TrackerManagerActivity extends FragmentActivity implements OnTrackerManagerChangeListener {

    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide
     * fragments for each of the sections. We use a
     * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
     * will keep every loaded fragment in memory. If this becomes too memory
     * intensive, it may be best to switch to a
     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
     */
    SectionsPagerAdapter mSectionsPagerAdapter;

    /**
     * The {@link ViewPager} that will host the section contents.
     */
    ViewPager mViewPager;

  private TrackerEditorFragment trackerEditorFragment;
  private TrackerCollectionFragment trackerCollectionFragment;
  private EditText mTrackerName;

  private ITrackerManager trackerManager;
  
    static enum Pages {TRACKER_LOG, TRACKERS, TRACKER_EDITOR};
    final static Pages[] PAGES = Pages.values();
    
    
  /**
   * Name of the common preferences file
   */
  public static final String COST_TRACKER_PREFS_FILE = "costTracker.prefs";

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


        // Create the adapter that will return a fragment for each of the three
        // primary sections of the app.
        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);
        
        // Initialize the PersistentTrackerManager
        trackerManager = new PersistentTrackerManager(getApplicationContext(), getSharedPreferences(COST_TRACKER_PREFS_FILE, MODE_PRIVATE));
        trackerManager.setTrackerManagerChangeListener(this);
        
    }
    
  @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.tracker_manager, menu);
        return true;
    }
    
    

    /**
     * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
     * one of the sections/tabs/pages.
     */
    public class SectionsPagerAdapter extends FragmentPagerAdapter {

        private TrackerLogFragment mTrackerLogFragment;

    public SectionsPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            // getItem is called to instantiate the fragment for the given page.
            // Return a TrackerCollectionFragment (defined as a static inner class
            // below) with the page number as its lone argument.
          Fragment fragment = null;
          switch(PAGES[position])
          {
          case TRACKER_LOG:
          {
            mTrackerLogFragment = new TrackerLogFragment();
            //TODO: use Bundle to pass args instead of specialized set method
            mTrackerLogFragment.setTrackerManager(trackerManager);
            fragment = mTrackerLogFragment;
            break;
          }
          case TRACKERS:
          {
            trackerCollectionFragment = new TrackerCollectionFragment();
            trackerCollectionFragment.setTrackerManager(trackerManager);
            trackerManager.setTrackerManagerChangeListener(trackerCollectionFragment);
            fragment = trackerCollectionFragment;
              Bundle args = new Bundle();
              args.putInt(TrackerCollectionFragment.ARG_SECTION_NUMBER, position + 1);
              args.putStringArrayList(TrackerCollectionFragment.ARG_TRACKER_NAMES, new ArrayList<String>(trackerManager.getTrackerNames()));
              fragment.setArguments(args);
              break;            
          }
          case TRACKER_EDITOR:
          {
            trackerEditorFragment = new TrackerEditorFragment();
            fragment = trackerEditorFragment;
            mViewPager.setOnPageChangeListener((TrackerEditorFragment) fragment);
            break;
          }          
          default:
            //set the fragment to an ErrorFragment
          };
          
          return fragment;
        }

        @Override
        public int getCount() {
            return PAGES.length;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            Locale l = Locale.getDefault();
            switch (PAGES[position]) {
                case TRACKER_LOG:
                    return getString(R.string.title_section1).toUpperCase(l);
                case TRACKERS:
                    return getString(R.string.title_section2).toUpperCase(l);
                case TRACKER_EDITOR:
                    return getString(R.string.title_section3).toUpperCase(l);
            }
            return null;
        }
    }

    public void addTrackerClicked(View view) {
    Log.d(TrackerLogFragment.class.getName(), "Adding new tracker");    
  }
  
  public void updateTracker(View view) {
    Log.d(TrackerLogFragment.class.getName(), "Clicked OK on edit tracker page");
    mTrackerName = (EditText) findViewById(R.id.editTextTrackerName);
    ITracker tracker = new SimpleTracker(mTrackerName.getText().toString(), mTrackerName.getText().toString());
    trackerManager.add(tracker);  
    mViewPager.setCurrentItem(Pages.TRACKERS.ordinal(), true);
    
    //Clear the form
    ((EditText) findViewById(R.id.editTextTrackerName)).setText("");
  }
  
  public void deleteTracker(View view) {
    Log.d(TrackerLogFragment.class.getName(), "Clicked OK on delete tracker menu item + view: " + view);
    
  }

    @Override
  public boolean onContextItemSelected(MenuItem item) {
      switch (item.getItemId()) {
        case R.id.itemEdit:
        {
          mViewPager.setCurrentItem(Pages.TRACKER_EDITOR.ordinal(), true);
          //return false so that the Fragment has a chance to handle this case also.
          return false;
        }
        case R.id.itemView:
        {
          mViewPager.setCurrentItem(Pages.TRACKER_LOG.ordinal(), true);
          return true;
        }
        default:
        {
            return super.onContextItemSelected(item);
        }
      }
    
  }

  @Override
  protected void onPause() {
    super.onPause();
    ((PersistentTrackerManager) trackerManager).persistTrackers();

  }

  @Override
  protected void onStop() {
    super.onStop();
    ((PersistentTrackerManager) trackerManager).persistTrackers();

  }

  @Override
  public void onTrackerChanged(TrackerEvent trackerEvent) {
    ((PersistentTrackerManager) trackerManager).persistTrackers();
  }

}

Java Source Code List

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