/**
* @param listener OnSharedPreferenceChangeListener
* @param decryptKeys Callbacks receive the "key" parameter decrypted
*/
public void registerOnSharedPreferenceChangeListener(
final OnSharedPreferenceChangeListener listener, boolean decryptKeys) {
if (!decryptKeys) {
registerOnSharedPreferenceChangeListener(listener);
return;
}
// wrap user's OnSharedPreferenceChangeListener with another that decrypts key before
// calling the onSharedPreferenceChanged callback
OnSharedPreferenceChangeListener secureListener =
new OnSharedPreferenceChangeListener() {
private OnSharedPreferenceChangeListener mInsecureListener = listener;
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
try {
String decryptedKey = decrypt(key);
if (decryptedKey != null) {
mInsecureListener.onSharedPreferenceChanged(sharedPreferences, decryptedKey);
}
} catch (Exception e) {
Log.w(TAG, "Unable to decrypt key: " + key);
}
}
};
sOnSharedPreferenceChangeListeners.put(listener, secureListener);
SecurePreferencesOld.sFile.registerOnSharedPreferenceChangeListener(secureListener);
}
