protected void store() {
Preferences prefs = getPreferences();
// clear the backing store
try {
prefs.clear();
} catch (BackingStoreException ex) {
}
for (int i = 0; i < gradients.size(); i++) {
LinearGradient gradient = gradients.get(i);
try {
prefs.putByteArray(COLORS + i, serializeColors(gradient.getColors()));
prefs.putByteArray(POSITIONS + i, serializePositions(gradient.getPositions()));
} catch (Exception e) {
e.printStackTrace();
}
}
}