import com.google.android.gms.gcm.GoogleCloudMessaging;
import com.google.android.gms.iid.InstanceID;
import net.kourlas.voipms_sms.Preferences;
import net.kourlas.voipms_sms.R;
import net.kourlas.voipms_sms.Utils;
<BUG>import org.json.simple.JSONObject;
import java.net.URLEncoder;</BUG>
public class Gcm {
private static Gcm instance = null;
private final Context applicationContext;

import com.google.android.gms.gcm.GoogleCloudMessaging;
import com.google.android.gms.iid.InstanceID;
import net.kourlas.voipms_sms.Preferences;
import net.kourlas.voipms_sms.R;
import net.kourlas.voipms_sms.Utils;
import org.json.JSONObject;
import java.net.URLEncoder;
public class Gcm {
private static Gcm instance = null;
private final Context applicationContext;
