Android Open Source - deborsi-notes Archive Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package ca.ualberta.cs.deborsi_notes;
//  w w  w .java  2 s  .  com
import android.content.Context;
import android.os.Bundle;
import android.util.SparseBooleanArray;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;

// Display and manage the Archive List 
// The Archive List is unstable to OnClick events

public class ArchiveActivity extends ItemListActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_archive);
    
    // set context to this
    final Context context = this;
    
    // initialize managers to manage both the lists
    activeManager = new ItemListManager();
    archiveManager = new ItemListManager();
    
    ListView = (ListView) findViewById(R.id.archiveList);
    
        try{
          activeManager.loadApp(itemFile, context);
          archiveManager.loadApp(archiveFile, context);
        }catch(ClassNotFoundException e){
          e.printStackTrace();
        }
  
        // initialize the lists
        ActiveList = activeManager.getItemList();
        ArchiveList = archiveManager.getItemList();
        
        // initialize an adapter to set items to ListView
        listAdapter = new ArrayAdapter<Item>(this, android.R.layout.simple_list_item_multiple_choice, ArchiveList.getItems());
        ListView.setAdapter(listAdapter);
        
        //--------------------------------------
        // the idea about implementing a context 
        // menu was discussed with Kieran Boyle 
        // ccid : kboyle
        //--------------------------------------
        registerForContextMenu(ListView);
        listAdapter.notifyDataSetChanged();
        
        // setup a listener to add items to the active list
    ListView.setOnItemClickListener(new OnItemClickListener() {
            @Override
      public void onItemClick(AdapterView<?> parent, View view,
                   int position, long id) {
                SparseBooleanArray checkedItemPositions = ListView.getCheckedItemPositions();
              archiveManager.updateChecked(checkedItemPositions);
              archiveManager.saveApp(archiveFile, context);
            }
        });
        setStatus(ListView);
  }
  
  public void setStatus(ListView listView){
      int i = (ArchiveList.size() - 1);
      while(i >= 0){
        listView.setItemChecked(i, (ArchiveList.getItemIndex(i).getStatus()));
        i--;
      }
    }
  
  //---------------------------------------------------------------------------------
  // Code for implementing the context menu was taken from:
  // 
  // Turotial : Show a context menu for long-clicks in an Android ListView
  // url : http://www.mikeplate.com/2010/01/21/show-a-context-menu-for-long-clicks-in-an-android-listview/
  // Author : Mikael Plate
  // Website : http://www.mikeplate.com/
  //---------------------------------------------------------------------------------
  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
      super.onCreateContextMenu(menu, v, menuInfo);
      AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
      String title = listAdapter.getItem(info.position).getItem();
      menu.setHeaderTitle(title);
      menu.add("UNARCHIVE");
      menu.add("REMOVE");
  }

  public boolean onContextItemSelected(MenuItem item) {
      AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
      int index = info.position;
    SparseBooleanArray checkedItemPositions = ListView.getCheckedItemPositions();
    if (item.getTitle() == "UNARCHIVE") {
      ActiveList.add(ArchiveList.getItemIndex(index));
      ArchiveList.remove(index);
      activeManager.saveApp(itemFile, this);
      listAdapter.notifyDataSetChanged();
      checkedItemPositions.clear();
      setStatus(ListView);
    }
    else if (item.getTitle() == "REMOVE") {
        ArchiveList.remove(index);
      archiveManager.saveApp(archiveFile, this);
            listAdapter.notifyDataSetChanged();
            checkedItemPositions.clear();
            setStatus(ListView);
      } 
    else {
          return false;
      }
      return true;
  }

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

Java Source Code List

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