Android Open Source - rhetolog Session List Activity

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License

The source code is released under:
Copyright (c) 2012 Kirk Zurell 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 Soft...
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Java Source Code

package name.zurell.kirk.apps.android.rhetolog;
/*  w w w  .java  2s.  c  o  m*/
/*
 * Copyright (c) 2012 Kirk Zurell
 *
 * See the file LICENSE for copying permission.
 */

import android.app.Activity;
import android.app.AlertDialog;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;

public class SessionListActivity extends Activity
        implements SessionListFragment.Callbacks, 
              SessionDetailFragment.Callbacks {

    private boolean mDualPane = false;

    private SessionListFragment sessionList;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        // Layout that contains fragment session_list.
        setContentView(R.layout.activity_session_list);
        
        if (findViewById(R.id.session_detail_container) != null) {
            mDualPane = true;
        }
        
        // Enable up button
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().show();
        
        // Session list fragment is automatically created.
        sessionList = ((SessionListFragment) getFragmentManager().findFragmentById(R.id.session_list));
        sessionList.setActivateOnItemClick(mDualPane);
        
        // How to initialize listfragment?
        // sessionList.getListView().set
        
    }
    

  /* (non-Javadoc)
   * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
   */
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.sessions_main, menu);
    return true;
  }
    
  
  
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
              finish(); // The activity
                return true;
            
            case R.id.newsession:
              // Views for new session dialog.
              View sessionDetails = LayoutInflater.from(this).inflate(R.layout.sessiondetails, null);
              final EditText sessionName = (EditText) sessionDetails.findViewById(R.id.sessionname);
              
              new AlertDialog.Builder(this)
              .setIcon(android.R.drawable.ic_menu_add)
              .setTitle("New Session")
              .setView(sessionDetails)
              .setPositiveButton("OK", new DialogInterface.OnClickListener() {
          
          @Override
          public void onClick(DialogInterface dialog, int which) {
            String newSessionName = sessionName.getText().toString();
            
            RhetologApplication application = (RhetologApplication) SessionListActivity.this.getApplication();
            
            Uri resultSession = null;
            resultSession = application.insertSession(newSessionName);
            
            final long newSessId = Long.valueOf(resultSession.getLastPathSegment());
            SessionListActivity.this.onSessionSelected(newSessId);
            
            // Select new session in list once it appears.
            // Consider also postDelayed
//            sessionList.getListView().post(new Runnable() {
//              @Override
//              public void run() {
//                sessionList.setSelectedSession(newSessId);
//                SessionListActivity.this.onSessionSelected(newSessId);
//              }
//            });
            
          }
        }).show();
              
              return true;
        }
        return super.onOptionsItemSelected(item);
    }

    
    /** SessionListFragment.Callbacks */
    
    private void displaySessionDetail(final long sessId) {
      if (mDualPane) {
        Handler why = new Handler(Looper.getMainLooper());
        // Don't know why but it works.
        why.post(new Runnable() {
        @Override
        public void run() {
          SessionDetailFragment fragment = SessionDetailFragment.newInstance(sessId);
                getFragmentManager().beginTransaction()
                        .replace(R.id.session_detail_container, fragment)
                        .commit();    
        }
      });
        } else {
          Intent detailIntent = new Intent(this, SessionDetailActivity.class);
            detailIntent.putExtra(SessionDetailFragment.ARG_ITEM_ID, sessId);
            startActivity(detailIntent);
        }
    }
    
    @Override
    public void onSessionSelected(long sessId) {
        
      // Session selected becomes current session
      this.getContentResolver().call(RhetologContract.PROVIDER_URI, "setCurrentSession", Long.toString(sessId), null);
      
      /* Display details */
      // Needed if updated listview cursor loader runs onInitialize?
        displaySessionDetail(sessId);
      
//        // Back to Uri land
//        Uri resultSession = Uri.withAppendedPath(RhetologContract.SESSIONS_URI, Long.toString(sessId));
        
        // Set result of session list selection for main activity
        Intent resultIntent = new Intent();
//        resultIntent.setData(resultSession);
        
        setResult(RESULT_OK, resultIntent);
    }

    @Override
  public void onInitialize(long sessId) {

      // If using a dual pane layout, select the current session and display its detail.
      if(mDualPane) {
      // Determine item position for specific ID
      ListView lv = sessionList.getListView();
      int positionFromID = -1;
      for (int i = 0; i < lv.getCount(); i++) {
        if (lv.getItemIdAtPosition(i) == sessId) {
          positionFromID = i; break;
        }
      }
      // Set the selection based on the ID
      //lv.setSelection(positionFromID);
      lv.setItemChecked(positionFromID, true);  
    
      displaySessionDetail(sessId);
    }  
    
  }

  /** SessionDetailFragment.Callbacks */

  @Override
  public void onDeleteParticipantClicked(int participantToDelete) {
    
    Uri deleteParticipant = Uri.withAppendedPath(
        RhetologContract.PARTICIPANTS_URI, 
        Integer.toString(participantToDelete)
        );
    
    getContentResolver().delete(deleteParticipant, null, null);
  }


  
  
}
Java Source Code List
