Android Open Source - MyJournal Main Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.shane87.myjournal;
/*from   w  w w . ja  v a  2s.c om*/
import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;


public class MainActivity extends ActionBarActivity {
  
  //String to specify the extras added to the intent that launches the
  //entry editor. Carries the entry id for the entry we are editing, or
  //0 for a new entry
  private static final String ENTRY_ID = "com.shane87.MyJournal.ENTRY_ID";
  private static final int EDIT_ENTRY_REQUEST = 0;
  private static final int ENTRY_CREATED = 1;
  //Journal object that abstracts all of the journal functions, including
  //journal formatting and db access
  private static Journal mJournal;
  private final static String TAG = "MyJournal.MainActivity";
  private static ListView mListView;
  private static JournalAdapter mJournalAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);        
        setContentView(R.layout.activity_main);
        
        //Instantiate the journal object
        Log.v(TAG, "Contnent View Set, Instantiating Journal object");
        mJournal = new Journal(getApplicationContext());
        
        //Get a pointer to the main list view that will show existing entries
        mListView = (ListView) findViewById(R.id.entriesListView);
        //Attach the journal adapter to the list view, passing the adapter the
        //current entries list from the main journal object
        mJournalAdapter = new JournalAdapter(getApplicationContext(), mJournal.getEntriesList());
        mListView.setAdapter(mJournalAdapter);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
      if (requestCode == EDIT_ENTRY_REQUEST)
      {
        if (resultCode == ENTRY_CREATED)
        {
          mJournalAdapter = new JournalAdapter(getApplicationContext(), mJournal.getEntriesList());
          mListView.setAdapter(mJournalAdapter);
        }
      }
    }
    
    //Method to handle clicks on the new entry button
    public void newEntry(View view) 
    {
      //Create an intent to launch the edit entry activity
      Intent intent = new Intent(this, EditEntryActivity.class);
      //Put an extra on the intent to specify a new entry (id = 0)
      intent.putExtra(ENTRY_ID, 0);
      //Launch the intent
      startActivityForResult(intent, EDIT_ENTRY_REQUEST);
    }
    
    public static Journal getJournal()
    {
      return mJournal;
    }
    
    public static String getEntryIdIntentTag()
    {
      return ENTRY_ID;
    }
    
    public static int getEntryCreatedResult()
    {
      return ENTRY_CREATED;
    }
}

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