Android Open Source - mac-hopper Alarm Utils

From Project

Back to project page mac-hopper.

License

The source code is released under:

MIT License

If you think the Android project mac-hopper listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package uk.co.danhawkes.machopper;
/*from w  w  w .java  2  s.c o m*/
import uk.co.danhawkes.machopper.R;
import uk.co.danhawkes.machopper.mac.MacChangeBroadcastReceiver;
import uk.co.danhawkes.machopper.mac.MacUtils;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;

public class AlarmUtils {

  public static final String TAG = AlarmUtils.class.getSimpleName();

  private final Context context;
  private final Store store;

  public AlarmUtils(Context context, Store store) {
    this.context = context.getApplicationContext();
    context.registerReceiver(mReceiver, new IntentFilter(
        MacChangeBroadcastReceiver.ACTION_SET_MAC));
    this.store = store;
  }

  public void rescheduleAlarm(long interval) {
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    PendingIntent pendingIntent = getAlarmPendingIntent();
    long time = System.currentTimeMillis() + interval;
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, time, interval, pendingIntent);
    store.saveScheduledAlarmTimeAndInterval(time, interval);
  }

  public void rescheduleAlarmFromPreferences(SharedPreferences preferences) {
    String intervalMins = preferences.getString(
        context.getString(R.string.pref_key_rotate_interval), null);
    long intervalMs = Integer.parseInt(intervalMins) * 60 * 1000;
    rescheduleAlarm(intervalMs);
  }

  private PendingIntent getAlarmPendingIntent() {
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
        MacUtils.newChangeMacIntent(), PendingIntent.FLAG_CANCEL_CURRENT);
    return pendingIntent;
  }

  public void cancelAlarm() {
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    alarmManager.cancel(getAlarmPendingIntent());
  }

  public long getTimeRemainingUntilNextAlarm() {
    long t0 = store.loadScheduledAlarmTime();
    long t1 = System.currentTimeMillis();
    long dt = t0 - t1;
    return (dt > 0) ? dt : 0;
  }

  public long getAlarmInterval() {
    return store.loadScheduledAlarmInterval();
  }

  private final BroadcastReceiver mReceiver = new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
      store.saveScheduledAlarmTime(System.currentTimeMillis()
          + store.loadScheduledAlarmInterval());
    }
  };
}

Java Source Code List