C2DMReceiver.java

package com.openvehicles.OVMS;

import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.util.ArrayList;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences.Editor;
import android.util.Log;
import android.widget.Toast;

public class C2DMReceiver extends BroadcastReceiver {
	private static String KEY = "C2DM";
	private static String REGISTRATION_KEY = "RegID";

	private Context context;

	@Override
	public void onReceive(Context context, Intent intent) {
		this.context = context;
		if (intent.getAction().equals(
				"com.google.android.c2dm.intent.REGISTRATION")) {
			handleRegistration(context, intent);
		} else if (intent.getAction().equals(
				"com.google.android.c2dm.intent.RECEIVE")) {
			handleMessage(context, intent);
		}
	}

	private void handleRegistration(Context context, Intent intent) {
		String registration = intent.getStringExtra("registration_id");
		if (intent.getStringExtra("error") != null) {
			// Registration failed, should try again later.
			Log.d("c2dm", "registration failed");
			String error = intent.getStringExtra("error");
			if (error == "SERVICE_NOT_AVAILABLE") {
				Log.d("c2dm", "SERVICE_NOT_AVAILABLE");
			} else if (error == "ACCOUNT_MISSING") {
				Log.d("c2dm", "ACCOUNT_MISSING");
			} else if (error == "AUTHENTICATION_FAILED") {
				Log.d("c2dm", "AUTHENTICATION_FAILED");
			} else if (error == "TOO_MANY_REGISTRATIONS") {
				Log.d("c2dm", "TOO_MANY_REGISTRATIONS");
			} else if (error == "INVALID_SENDER") {
				Log.d("c2dm", "INVALID_SENDER");
			} else if (error == "PHONE_REGISTRATION_ERROR") {
				Log.d("c2dm", "PHONE_REGISTRATION_ERROR");
			}
		} else if (intent.getStringExtra("unregistered") != null) {
			// unregistration done, new messages from the authorized sender will
			// be rejected
			Log.d("c2dm", "unregistered");

		} else if (registration != null) {
			Log.d("c2dm", registration);
			Editor editor = context.getSharedPreferences(KEY,
					Context.MODE_PRIVATE).edit();
			editor.putString(REGISTRATION_KEY, registration);
			editor.commit();

			Toast.makeText(context, "Push Notification Registered", 2000);

			// Send the registration ID to the 3rd party site that is sending
			// the messages.
			// This should be done in a separate thread.
			// When done, remember that all registration is done.

			// TODO:
		}
	}

	private void handleMessage(Context context, Intent intent) {
		// display message
		if (!intent.hasExtra("title") || !intent.hasExtra("message")) {
			Log.d("ERR", "An invalid C2DM message was received.");
			return;
		}

		// load saved cars to get the correct icon
		ArrayList<CarData> allSavedCars = null;
		try {
			final String settingsFileName = "OVMSSavedCars.obj";
			Log.d("OVMS", "Loading saved cars from internal storage file: "
					+ settingsFileName);
			FileInputStream fis;
			fis = context.openFileInput(settingsFileName);
			ObjectInputStream is = new ObjectInputStream(fis);
			allSavedCars = (ArrayList<CarData>) is.readObject();
			is.close();
		} catch (Exception e) {
			e.printStackTrace();
		}

		// set up notification
		String ns = Context.NOTIFICATION_SERVICE;
		NotificationManager mNotificationManager = (NotificationManager) context
				.getSystemService(ns);

		CharSequence contentTitle = intent.getStringExtra("title");
		CharSequence contentText = intent.getStringExtra("message");
		CharSequence tickerText = contentText;
		int icon = android.R.drawable.ic_lock_idle_alarm;

		// save notification to file
		OVMSNotifications savedList = new OVMSNotifications(context);
		savedList.AddNotification(contentTitle.toString(),
				contentText.toString());
		savedList.Save();

		// try to find the correct icon for this car
		if (allSavedCars != null) {
			for (CarData car : allSavedCars) {
				// OVMS server sends Vehicle ID in the title field
				if (car.VehicleID.equals(contentTitle)) {
					icon = context.getResources().getIdentifier(
							car.VehicleImageDrawable + "32x32", "drawable",
							"com.openvehicles.OVMS");
					break;
				}
			}
		}

		long when = System.currentTimeMillis();
		Notification notification = new Notification(icon, tickerText, when);
		notification.flags = Notification.FLAG_AUTO_CANCEL;
		notification.defaults = Notification.DEFAULT_LIGHTS
				| Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE;

		Intent notificationIntent = new Intent(context, OVMSActivity.class);
		notificationIntent.putExtra("SetTab", "tabNotifications");
		PendingIntent launchOVMSIntent = PendingIntent.getActivity(context, 0,
				notificationIntent, 0);
		notification.setLatestEventInfo(context, contentTitle, contentText,
				launchOVMSIntent);

		mNotificationManager.notify(1, notification);
	}
}