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| package com.example.mon.app;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;
public class FlightBook extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor>
{
private ListView ReservationList = null;
private Cursor c = null;
private SimpleCursorAdapter adapter = null;
private ReservationsBDD rdb = new ReservationsBDD(this);
private static final int LOADER_ID = 0;
private static final String[] PROJECTION = new String[] {MaBaseSQLite.COL_ID, MaBaseSQLite.getColReference(), MaBaseSQLite.getColLastname()};
private LoaderManager.LoaderCallbacks<Cursor> mCallbacks;
@SuppressWarnings("deprecation")
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_flight_book);
ReservationList = (ListView) findViewById(R.id.flightList);
//Initialiser la base de données
rdb.open();
String[] from = { MaBaseSQLite.getColReference(), MaBaseSQLite.getColLastname() };
int[] to = { R.id.reference_entry, R.id.lastname_entry };
//TODO: NE PAS UTILISER LES METHODES DECONSEILLEES PAR ECLIPSE
Cursor cursor = managedQuery(ReservationProvider.CONTENT_URI, PROJECTION, null, null, null);
adapter = new SimpleCursorAdapter(this, R.layout.flight_book_list, cursor, from, to);
ReservationList.setAdapter(adapter);
mCallbacks = this;
//ReservationList.setAdapter(mAdapter);
getSupportLoaderManager().initLoader(LOADER_ID, null, mCallbacks);
//Gérer le clic simple sur un élément de la listView
ReservationList.setOnItemClickListener(new OnItemClickListener()
{
long selectedItemID = 0;
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
//Requêter la réservation par son ID
Reservation res = rdb.getReservationWithID(id);
//Afficher l'activité ReservationInfo
Intent myIntent = new Intent(view.getContext(), ReservationInfo.class);
myIntent.putExtra("ReservationReference", res.getReference());
myIntent.putExtra("LastName", res.getLastname());
startActivityForResult(myIntent, 0);
}
});
//Gestion du clic long sur un élément de la liste
ReservationList.setOnItemLongClickListener (new OnItemLongClickListener()
{
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id)
{
return onLongListItemClick(view, position, id);
}
protected boolean onLongListItemClick(final View v, final int pos, long id)
{
final String str=ReservationList.getItemAtPosition(pos).toString();
Log.i("ListView", "onLongListItemClick string=" + str);
AlertDialog.Builder builder = new AlertDialog.Builder(FlightBook.this);
builder.setMessage("Delete this entry from Flight Book?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int id)
{
Log.i("ID",""+pos);
//TODO: UTILISER LE CURSORLOADER SI POSSIBLE!
rdb.removeReservationWithID((int)adapter.getItemId(pos));
//TODO: Gérer la mise à jour de la liste dans l'affichage en temps réel
//Refresh ListView automatically
//Cursor c = rdb.queueAll();
//startManagingCursor(c);
//mAdapter.changeCursor(c);
/*Cursor c = getContentResolver().query(Uri.withAppendedPath(ReservationProvider.CONTENT_URI, String.valueOf(id)), PROJECTION, null, null, null);
if (c.moveToFirst())
{
String reservationUrl = c.getString(0);
//tutSelectedListener.onTutSelected(reservationUrl);
}*/
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int id)
{
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
return true;
}
});
}
public void onPause()
{
super.onPause();
}
public void onDestroy()
{
super.onDestroy();
rdb.close();
}
public void onStart()
{
super.onStart();
}
public void onStop()
{
super.onStop();
}
public void onResume(Bundle savedInstanceState)
{
super.onResume();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.activity_flight_book, menu);
return true;
}
public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1)
{
// TODO Auto-generated method stub
return new CursorLoader(FlightBook.this, ReservationProvider.CONTENT_URI, PROJECTION, null, null, null);
}
//@Override -> won't work, says "must override a superclass method"
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor)
{
adapter.swapCursor(cursor);
}
//@Override -> won't work, says "must override a superclass method"
public void onLoaderReset(Loader<Cursor> loader)
{
adapter.swapCursor(null);
}
} |
[Optimisation] Utilisation de CursorLoader au lieu de StartManagingCursor
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