notification.java

String message = "Test Message";
CharSequence appName = "Test App";
int appIcon = android.R.drawable.sym_def_app_icon;
try {
	ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo(context.getPackageName(), 0);
	appName = context.getPackageManager().getApplicationLabel(applicationInfo);
	appIcon = applicationInfo.icon;
} catch (PackageManager.NameNotFoundException e) {}

Notification notification = new Notification(appIcon, message, System.currentTimeMillis());
notification.flags |= Notification.FLAG_AUTO_CANCEL;

Intent launchIntent = new Intent(this, TestActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, launchIntent, PendingIntent.FLAG_UPDATE_CURRENT);
notification.setLatestEventInfo(context, appName, message, contentIntent);

NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(campaignId, notification);