I have done some research and tried to implement a one time alarm that sends a notification to the user, but for some reason I cannot understand, when the time comes, the alarm is not being activated. I think the onReceive method is not being called, but I don't know why, since it's the first time I try to implement an alarm.
=== Edit: it seems that the alarm's onReceive is working after all, I got the toast message "Alarm!!" at the right time (don't know why it didn't the first time I tested), but no notification was received, though... Any clues?
This is the code for the Alarm class:
public class Alarm extends BroadcastReceiver {
public static final String PREFS_FILE_NAME = MainActivity.PREFS_FILE_NAME;
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
// send notification
Toast.makeText(context, "Alarm!!", Toast.LENGTH_SHORT).show();
// API < 16 so have to use compat
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(context)
.setContentTitle(context.getResources().getString(R.string.memo_test_ready))
.setContentText(context.getResources().getString(R.string.click_to_start));
Intent resultIntent = new Intent(context, UpcomingTest.class);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addParentStack(UpcomingTest.class);
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(123, mBuilder.build());
}
public void Set(Context context)
{
DatabaseHandler db = new DatabaseHandler(context);
MemoryTestLevel memoTestLevel = new MemoryTestLevel();
long timeInterval;
long memoryTest_dateTime;
String alarmMemoLevel;
List<Phrase> studyPhrasesList = db.getPhrasesWithState(Phrase.START_STUDYING);
if (studyPhrasesList.size() > 0 ){ // if there are any phrases here, update them; dateTime == level 1
alarmMemoLevel = "Level 1 ";
memoTestLevel = db.getMemoryTestLevelWithLevel(MemoryTestLevel.LEVEL_1);
timeInterval = memoTestLevel.getTimeInterval();
TestDateTimeCalculator datetimeCalc = new TestDateTimeCalculator();
memoryTest_dateTime = datetimeCalc.calculate(timeInterval);
for(Phrase phrase : studyPhrasesList){
phrase.setMemoryTestPending(memoTestLevel.getMemoryTest_id(), memoryTest_dateTime);
db.updatePhrase(phrase);
}
} else {
// if there are no phrases to be set at level 1, then get the lowest memoTest_datime of
// the ones that are pending
alarmMemoLevel = "next after L1 ";
memoryTest_dateTime = db.getLowestMemoTestDateTime();
}
/* 2. Set new Alarm
* 2.1. Determine which phrases will go into this new alarm */
List<Phrase> nextMemoryTestPhrases = db.getNextMemoryTestPhrases(memoryTest_dateTime);
for(Phrase phrase : nextMemoryTestPhrases) {
phrase.setState(Phrase.MEMORY_TEST_SCHEDULED);
db.updatePhrase(phrase);
}
// 2.3 set alarm for required dateTime
AlarmManager alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, Alarm.class);
PendingIntent pendingInt = PendingIntent.getBroadcast(context, 0, intent, 0);
alarmMgr.set(AlarmManager.RTC_WAKEUP, memoryTest_dateTime, pendingInt);
// 2.4 save the alarm.dateTime in the preferences so it can be used in the "upcoming test" activity
SharedPreferences preferences = context.getSharedPreferences(PREFS_FILE_NAME, Context.MODE_PRIVATE);
Editor editor = preferences.edit();
editor.putLong("NEXT_TEST_DATETIME", memoryTest_dateTime);
SimpleDateFormat sdf = new SimpleDateFormat("EEE, MMM d, yyyy hh:mm");
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(memoryTest_dateTime);
String nextTestDateStr = sdf.format(calendar.getTime());
Toast.makeText(context, "Alarm set to " + alarmMemoLevel + nextTestDateStr, Toast.LENGTH_LONG).show();
editor.commit();
}
public void Cancel(Context context)
{
Intent intent = new Intent(context, MyBroadcastReceiver.class);
PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(sender);
}
}
And I have a broadcast receiver in case the phone is rebooted:
public class MyBroadcastReceiver extends BroadcastReceiver {
public static final String PREFS_FILE_NAME = MainActivity.PREFS_FILE_NAME;
@Override
public void onReceive(Context context, Intent intent) {
// TODO setup alarm again (get datetime from system)
Alarm alarm = new Alarm();
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED"))
{
SharedPreferences preferences = context.getSharedPreferences(PREFS_FILE_NAME, Context.MODE_PRIVATE);
long nextTestDateInMillis = preferences.getLong("NEXT_TEST_DATETIME", 0);
if(nextTestDateInMillis > 0){
alarm.Set(context);
}
}
}
}
From the research I found, it seems that something is missing/wrong in my manifest. This is what I have there:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>
The below is inside application:
<receiver android:name="liliana.phrasememo.util.MyBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<receiver android:process=":remote" android:name="liliana.phrasememo.util.Alarm"/>
Also, if you see anything else that's wrong in my implementation of Alarm + Notification it would be brilliant to give me the heads up. Thank you very much :-)
