android - メソッドから通知をトリガーするにはどうすればよいですか?

Question

通知の底をトリガーしようとしています。このコード例に従いました http://www.compiletimeerror.com/2013/10/status-bar-notification-example-in.html#.VWtoS1xViko

アプリのメイン アクティビティである HomeActivity からメソッドを呼び出すと、通知をトリガーできます。アプリ内のメソッドの 1 つから呼び出そうとしても、何も起こりません。（例えば）

HomeActivity homeactivity = new HomeActivity();
homeactivity.Notify("Title: ...", "Msg: ... ");

イベントのログは次のとおりです。ボタンを 5 回押すとアラートがトリガーされます

05-31 18:33:41.533  10118-10118/com.myapp.md E/>>>>>>﹕ MultiClickEvent clickCount = 5
05-31 18:33:41.543  10118-10118/com.myapp.md E/>>>>>>>﹕ in onActivation of HWReceiver
05-31 18:33:41.603  10118-10118/com.myapp.md V/Vibrator﹕ Called vibrate(long) API - PUID: 10588, PackageName: com.myapp.md
05-31 18:33:41.603  10118-10118/com.myapp.md V/Vibrator﹕ vibrate - PUID: 10588, PackageName: com.myapp.md, ms: 3000, mag: -1
05-31 18:33:41.643  10118-10118/com.myapp.md D/AbsListView﹕ onVisibilityChanged() is called, visibility : 4
05-31 18:33:41.643  10118-10118/com.myapp.md D/AbsListView﹕ unregisterIRListener() is called
05-31 18:33:41.643  10118-10118/com.myapp.md D/AbsListView﹕ onVisibilityChanged() is called, visibility : 4
05-31 18:33:41.643  10118-10118/com.myapp.md D/AbsListView﹕ unregisterIRListener() is called
05-31 18:33:41.643  10118-11068/com.myapp.md E/>>>>>>﹕ in CurrentLocationProvider CONSTRUCTOR - trying to retrieve location from getLastKnownLocation()
05-31 18:33:41.833  10118-11068/com.myapp.md I/com.myapp.md.alert.SMSAdapter﹕ Sms sent: I need IMMEDIATE help! - I'm here https://maps.google.com/maps?q=40.7348922,-73.977548 via network
05-31 18:33:44.883  10118-10118/com.myapp.md E/>>>>>>>﹕ in onReceive of HWReceiver
05-31 18:33:44.883  10118-10118/com.myapp.md E/>>>>>>>﹕ in onReceive of HWReceiver context com.myapp.md.trigger.HardwareTriggerService@429b89b0
05-31 18:33:44.883  10118-10118/com.myapp.md E/>>>>>>>﹕ in onReceive of HWReceiver intent Intent { act=android.intent.action.SCREEN_ON flg=0x50000010 }

SMSAdapter に通知を入れようとしました

public class SMSAdapter {
    private static final String LOG_TAG = SMSAdapter.class.getName();

    public void sendSMS(Context context, String phoneNumber, String message) {
//        Log.e("20140411", "sending fake SMS -> " + message);
        if(!ApplicationSettings.isFirstMsgSent(context)){
            ApplicationSettings.setFirstMsgSent(context, true);
        }
        SmsManager smsManager = getSmsManager();
        try {
            smsManager.sendTextMessage(phoneNumber, null, message, null, null);
            Log.i(LOG_TAG, "Sms sent: " + message);
            HomeActivity homeactivity = new HomeActivity();
            homeactivity.Notify("Title: Text SOS",
                    "Msg: Alerting your emergency contacts ");
        } catch (Exception exception) {
            Log.e(LOG_TAG, "Sending SMS failed " + exception.getMessage());
        }
    }

    SmsManager getSmsManager() {
        return SmsManager.getDefault();
    }
}

それをすると、このメッセージが表示されます

05-31 18:39:33.163  18640-19982/com.textsosalert.md E/>>>>>>﹕ in CurrentLocationProvider CONSTRUCTOR - trying to retrieve location from getLastKnownLocation()
05-31 18:39:33.383  18640-19982/com.textsosalert.md I/com.textsosalert.md.alert.SMSAdapter﹕ Sms sent: I need IMMEDIATE help! - I'm here https://maps.google.com/maps?q=40.7348689,-73.9775756 via network
05-31 18:39:33.383  18640-19982/com.textsosalert.md E/com.textsosalert.md.alert.SMSAdapter﹕ Sending SMS failed Can't create handler inside thread that has not called Looper.prepare()

私が定義した Notify メソッドは次のとおりです。

@SuppressWarnings("deprecation")
public void Notify(String notificationTitle, String notificationMessage) {
    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    @SuppressWarnings("deprecation")
    Notification notification = new Notification(R.drawable.icon_sos,
            "New Message", System.currentTimeMillis());

    Intent notificationIntent = new Intent(this, HomeActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
            notificationIntent, 0);

    notification.setLatestEventInfo(HomeActivity.this, notificationTitle,
            notificationMessage, pendingIntent);
    notificationManager.notify(9999, notification);
}