[android-developers] Android Alarm Manager problems after a period of time

Hi,

I have a problem using Alarm Manager. I developed a simple reminder application. It is composed by a set of normal Activity, an IntentService and a BroadcastReceiver. The first activity show a grid of reminder, and with a button I can create a new reminder (managed by another activity). The new reminder is stored into the database and when the storing operation terminate another activity starts an IntentService: the IntentService take the data from the database and create the reminders. Finally a broadcast receiver manage these reminders and shows a notification. 

But a problem persist: the first reminders within the first about 30/40 minutes are correctly notified, while the others after this period of time don't work.

This is my code: 

IntentService class:

package com.example.papp;

import java.util.Calendar;

import android.app.AlarmManager;

import android.app.IntentService;

import android.app.PendingIntent;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.database.Cursor;

import android.media.Ringtone;

import android.media.RingtoneManager;

import android.net.Uri;

import android.widget.Toast;

public class AlarmIntentService extends IntentService {

private IntentFilter matcher;

protected static int HELLO_ID =555;

private int counter;

private DbAlarmReminderAdapter dbAlarmReminderAdapter;

private Cursor alarmCursor;

private DbAdapter dbHelper; 

    private Cursor cursor;

private long ldata, lorario;

private String timeString;

long currentTimeStamp = System.currentTimeMillis();

int reminderID = 0;

String imageURIString;

public AlarmIntentService() {

super("AlarmIntentService");

}

@Override

protected void onHandleIntent(Intent intent) {

// TODO Auto-generated method stub

System.out.println("AVVIATO IL ALARMINTENTSERVICE");

Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);

r.play();

Toast.makeText(this, "Intent process in background", Toast.LENGTH_LONG).show();

syncronizeFromDb();   // avvio la sincronizzazione

}

// METODO PER LA CREAZIONE DELLE NOTIFICHE

private void createNotification(int year, int month, int day_of_month, int hour_of_day, int minute, int second, int reminderID){

counter++;

Calendar cal = Calendar.getInstance();       //for using this you need to import java.util.Calendar;

// add minutes to the calendar object

cal.set(Calendar.MONTH,month);  // the month starts with JAN == 0

cal.set(Calendar.YEAR,year);

cal.set(Calendar.DAY_OF_MONTH,day_of_month);

cal.set(Calendar.HOUR_OF_DAY,hour_of_day);

cal.set(Calendar.MINUTE,minute);

cal.set(Calendar.SECOND,second);

Intent alarmintent = new Intent(getApplicationContext(), AlarmReceiver.class);

alarmintent.putExtra("title","E' l'ora della medicina");

alarmintent.putExtra("note","PillsApp");

alarmintent.putExtra("reminderID", reminderID);

alarmintent.putExtra("imageURIString", imageURIString);

StringBuilder sb = new StringBuilder();

sb.append(pad(hour_of_day)).append(":").append(pad(minute));

timeString = sb.toString();

alarmintent.putExtra("timeString", timeString);

//cambiato getBroadcast con getService

PendingIntent sender = PendingIntent.getBroadcast(getApplicationContext(), HELLO_ID+counter, alarmintent, PendingIntent.FLAG_UPDATE_CURRENT);

//VERY IMPORTANT TO SET FLAG_UPDATE_CURRENT... this will send correct extra's informations to 

AlarmManager am = (AlarmManager)getSystemService(Context.ALARM_SERVICE);

am.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), sender);

}

//GET IMAGE STRING URI FROM DATABASE

public String getImageStringUrifromDB(long reminderID){

String imageURIString = null;

       dbHelper = new DbAdapter(this);

       dbHelper.open();

       cursor = dbHelper.fetchReminderById(reminderID);

       if(cursor !=null){

    cursor.moveToFirst();

    imageURIString = cursor.getString(cursor.getColumnIndex(DbAdapter.KEY_IMG_SRC));

       }

       cursor.close();

       dbHelper.close();

return imageURIString;

}

public void syncronizeFromDb(){

dbAlarmReminderAdapter = new DbAlarmReminderAdapter(this);

       dbAlarmReminderAdapter.open();

       alarmCursor = dbAlarmReminderAdapter.fetchAllReminders();

       

       

       //calcolo della data, anno, ora ecc corrente

       Calendar cal = Calendar.getInstance();

       int cyear = cal.get(Calendar.YEAR);

       int cmonth = cal.get(Calendar.MONTH);

       int cday = cal.get(Calendar.DAY_OF_MONTH);

       int chour = cal.get(Calendar.HOUR_OF_DAY);

       int cminute = cal.get(Calendar.MINUTE);

       

       //SINCRONIZZAZIONE DI TUTTI I REMINDER

       while(alarmCursor.moveToNext()){

        ldata = alarmCursor.getLong(alarmCursor.getColumnIndex("a_reminder_data"));

        lorario = alarmCursor.getLong(alarmCursor.getColumnIndex("a_reminder_orario"));

       

        int year = CalendarCalculations.getYearNumber(ldata);

        int month = CalendarCalculations.getMonthNumber(ldata);

        int day_of_month  = CalendarCalculations.getDayNumber(ldata);

        int hour_of_day = (int)CalendarCalculations.getHourNumber(lorario);

        int minute = (int)CalendarCalculations.getMinuteNumber(lorario);

        int second = 00;

        reminderID = alarmCursor.getInt(alarmCursor.getColumnIndex("a_reminderID"));

       

        long reminderDateMs = ldata;

        int reminderYear = CalendarCalculations.getYearNumber(reminderDateMs);

        int reminderMonth = CalendarCalculations.getMonthNumber(reminderDateMs);

        int reminderDayMonth = CalendarCalculations.getDayNumber(reminderDateMs);

        int reminderHour = (int) CalendarCalculations.getHourNumber(lorario);

           int reminderMinutes = (int) CalendarCalculations.getMinuteNumber(lorario);

       

           

        long currentDateMs = CalendarCalculations.getCurrentDataInMs();

           int currentHour = CalendarCalculations.getCurrentHourInt();

           int currentMinutes = CalendarCalculations.getCurrentMinuteInt();

           int currentYear = CalendarCalculations.getCurrentYearInt();

           int currentMonth = CalendarCalculations.getCurrentMonthInt();

           int currentDayMonth = CalendarCalculations.getCurrentDayMonthInt();

                        

           

           if(reminderYear == currentYear && reminderMonth == currentMonth && reminderDayMonth == currentDayMonth ){ 

            //System.out.println("STESSO GIORNO");

               if(reminderHour == currentHour){  // stessa ora

                //System.out.println("STESSa ORA");

                if(reminderMinutes > currentMinutes){

                //System.out.println("STESSO GIORNO CREATO");

                imageURIString = getImageStringUrifromDB(reminderID);

                   createNotification(year, month, day_of_month, hour_of_day, minute, second, reminderID);

                }

               

               }

           }

           else if(reminderDateMs > currentDateMs){  // altro giorno superiore alla data corrente

            //System.out.println("ALTRO GIORNO CREATO");

            imageURIString = getImageStringUrifromDB(reminderID);

               createNotification(year, month, day_of_month, hour_of_day, minute, second, reminderID);

           }

           

           //System.out.println("========================================");

           //System.out.println("========================================");

        }// CHIUSURA WHILE

   

       

       

       alarmCursor.close();

       dbAlarmReminderAdapter.close();

}

// METODO CHE AGGIUNGE LO 0 QUANDO SERVE

/** Add padding to numbers less than ten */

private static String pad(int c) {

   if (c >= 10)

       return String.valueOf(c);

   else

       return "0" + String.valueOf(c);

}

}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

The ReceiverClass:

package com.example.papp;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.util.Calendar;

import android.app.AlarmManager;

import android.app.Notification;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.content.BroadcastReceiver;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.graphics.Bitmap;

import android.media.RingtoneManager;

import android.net.Uri;

import android.os.Bundle;

import android.os.PowerManager;

import android.provider.MediaStore;

import android.support.v4.app.NotificationCompat;

import com.example.papp.R;

import com.example.papp.DisplayReminder;

 

public class AlarmReceiver extends BroadcastReceiver {

 

private static int NOTIFICATION_ID = 555;

Bitmap bitmap;

String msg ="msg";

private Context mcontext;

 

@Override

public void onReceive(Context context, Intent intent) {

mcontext = context;

WakeLocker.acquire(context);

Bundle extras=intent.getExtras();

String title=extras.getString("title");

// String id = extras.getString("id");

int reminderID = extras.getInt("reminderID");

// int idInt = Integer.parseInt(id);

String note=extras.getString("note");

String imageURIString = extras.getString("imageURIString");

String timeString = extras.getString("timeString");

note = note+" | "+timeString;

 

 

try {

System.out.println(Uri.parse(imageURIString));

bitmap = MediaStore.Images.Media.getBitmap(mcontext.getContentResolver(), Uri.parse(imageURIString));

bitmap = getResizedBitmap(bitmap,  60, 60);

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

 

 

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(

               context)

.setSmallIcon(R.drawable.android100)

               .setContentTitle(note)

               .setLargeIcon(bitmap)

               .setContentText(title)

               .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));

 

   Intent notifyIntent =  new Intent(mcontext, DisplayReminder.class);

   notifyIntent.putExtra("reminderID", ""+reminderID);

 

   

   //cambiare getActivity con getService

   PendingIntent contentIntent = PendingIntent.getActivity(mcontext, reminderID, notifyIntent, PendingIntent.FLAG_UPDATE_CURRENT);

       mBuilder.setContentIntent(contentIntent);

       NotificationManager mNotificationManager = (NotificationManager) mcontext.getSystemService(Context.NOTIFICATION_SERVICE);

       mNotificationManager.notify(NOTIFICATION_ID++, mBuilder.build());

 

       WakeLocker.release();

 

 

}

public Bitmap getResizedBitmap(Bitmap image, int bitmapWidth, int bitmapHeight) {

    return Bitmap.createScaledBitmap(image, bitmapWidth, bitmapHeight,

                true);

}

}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

And this is part of my manifest file:

 <receiver android:name="com.example.papp.AlarmReceiver"></receiver>

        

        <service android:name="com.example.papp.AlarmService"></service>

        

        <service android:name="com.example.papp.AlarmIntentService"></service>

        

        <activity

            android:label="@string/app_name"

            android:name="com.example.papp.GalleryListMainActivity">

             <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Finally, the IntentService is launched from another activity in this way:

Intent msgIntent = new Intent(getApplicationContext(), AlarmIntentService.class);

        startService(msgIntent);

        

Thanks in advance

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