Android™ Application Development - Bahar Ali Khan

Chapter 6: Data Storage, Retrieval, and Sharing
204
}
}
earthquakes.add(_quake);
addQuakeToArray(_quake);
private void addQuakeToArray(Quake _quake) {
if (_quake.getMagnitude() > minimumMagnitude) {
// Add the new quake to our list of earthquakes.
earthquakes.add(_quake);
}
}
// Notify the array adapter of a change.
aa.notifyDataSetChanged();
2. Create a new loadQuakesFromProvider method that loads all the earthquakes from the Earthquake
Provider and inserts them into the array list using the addQuakeToArray method created
in Step 1.
private void loadQuakesFromProvider() {
// Clear the existing earthquake array
earthquakes.clear();
ContentResolver cr = getContentResolver();
// Return all the saved earthquakes
Cursor c = cr.query(EarthquakeProvider.CONTENT_URI,
null, null, null, null);
if (c.moveToFirst())
{
do {
// Extract the quake details.
Long datems = c.getLong(EarthquakeProvider.DATE_COLUMN);
String details;
details = c.getString(EarthquakeProvider.DETAILS_COLUMN);
Float lat = c.getFloat(EarthquakeProvider.LATITUDE_COLUMN);
Float lng = c.getFloat(EarthquakeProvider.LONGITUDE_COLUMN);
Double mag = c.getDouble(EarthquakeProvider.MAGNITUDE_COLUMN);
String link = c.getString(EarthquakeProvider.LINK_COLUMN);
Location location = new Location(“dummy”);
location.setLongitude(lng);
location.setLatitude(lat);
Date date = new Date(datems);
Quake q = new Quake(date, details, location, mag, link);
addQuakeToArray(q);
} while(c.moveToNext());
}
c.close();
}