AlarmReceiver.java

package se.slide.timy;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;

import java.io.IOException;
import java.util.Calendar;
import java.util.Set;

public class AlarmReceiver extends BroadcastReceiver {

    public final static int NOTIFICATION_ID = 0;

    private MediaPlayer mPlayer;

    @Override
    public void onReceive(Context context, Intent intent) {
        SharedPreferences sharedPreferences = PreferenceManager
                .getDefaultSharedPreferences(context);
        boolean reminder = sharedPreferences.getBoolean("remind_me_audio", false);
        Set<String> prefDays = sharedPreferences.getStringSet("remind_me_when", null);

        if (!fireAlarmToday(prefDays))
            return;

        if (reminder)
            playAlarm(context);

        showNotification(context);

    }

    private void playAlarm(Context context) {
        Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
        if (alert == null) {
            // alert is null, using backup
            alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            if (alert == null) { // I can't see this ever being null (as always
                                 // have a default notification) but just incase
                // alert backup is null, using 2nd backup
                alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
            }
        }

        mPlayer = new MediaPlayer();
        try {
            mPlayer.setDataSource(context, alert);

            final AudioManager audioManager = (AudioManager) context
                    .getSystemService(Context.AUDIO_SERVICE);
            if (audioManager.getStreamVolume(AudioManager.STREAM_ALARM) != 0) {
                mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
                mPlayer.setLooping(false);
                mPlayer.prepare();
                mPlayer.start();
            }
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        Runnable stopSoundRunnable = new Runnable() {

            @Override
            public void run() {
                mPlayer.stop();
            }
        };

        int duration = mPlayer.getDuration();

        Handler handler = new Handler();
        handler.postDelayed(stopSoundRunnable, duration);

    }

    private void showNotification(Context context) {
        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(context)
                        .setSmallIcon(R.drawable.ic_launcher_bw)
                        .setAutoCancel(true)
                        .setContentTitle(context.getString(R.string.notification_title))
                        .setContentText(context.getString(R.string.notification_text));

        // Creates an explicit intent for an Activity in your app
        Intent resultIntent = new Intent(context, MainActivity.class);

        // The stack builder object will contain an artificial back stack for
        // the
        // started Activity.
        // This ensures that navigating backward from the Activity leads out of
        // your application to the Home screen.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
        // Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(MainActivity.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                        0,
                        PendingIntent.FLAG_UPDATE_CURRENT
                        );
        mBuilder.setContentIntent(resultPendingIntent);
        NotificationManager mNotificationManager =
                (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
    }

    private boolean fireAlarmToday(Set<String> prefDays) {
        if (prefDays == null)
            return false;

        Calendar checkDay = Calendar.getInstance();
        int dayOfWeek = checkDay.get(Calendar.DAY_OF_WEEK);

        for (String day : prefDays) {
            if (dayOfWeek == Calendar.MONDAY && day.equals("1"))
                return true;
            if (dayOfWeek == Calendar.TUESDAY && day.equals("2"))
                return true;
            if (dayOfWeek == Calendar.WEDNESDAY && day.equals("3"))
                return true;
            if (dayOfWeek == Calendar.THURSDAY && day.equals("4"))
                return true;
            if (dayOfWeek == Calendar.FRIDAY && day.equals("5"))
                return true;
            if (dayOfWeek == Calendar.SATURDAY && day.equals("6"))
                return true;
            if (dayOfWeek == Calendar.SUNDAY && day.equals("7"))
                return true;
        }

        return false;
    }
}