I am having some problem when trying to prompt notification based on the timing set by Alarm Manager in Android.
So what I am trying to do is a budget setting application. If the monthly expenses exceed the budget, it will prompt notification. In order to keep the question short, I will just post the part where I interact with Alarm Manager:
AlarmManager mgr = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
Intent notificationIntent = new Intent(context, BudgetAlarm.class);
PendingIntent pi = null;
if (bm.getReminderNotify().equals("Y")
&& percentage >= 90) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 1);
notificationCount = notificationCount + 1;
// Set request flag to 1 so that the same pending intent in broadcastReceiver
notificationIntent.putExtra("NotifyCount", notificationCount);
pi = PendingIntent.getBroadcast(context, 1,
notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
mgr.setInexactRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pi);
What I am trying to do here is to check if the expenses exceed the budget. And inside the BudgetAlarm class, I am prompting the notification:
private NotificationManager mNotificationManager;
private Notification notification;
@Override
public void onReceive(Context context, Intent intent) {
mNotificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(context, 1,
new Intent(), 0);
notification = new Notification(R.drawable.ic_launcher, "Notification",
System.currentTimeMillis());
notification.setLatestEventInfo(context, "Budget Reminder",
"Your monthly expenses nearly exceed the budget!",
contentIntent);
mNotificationManager.notify(
Integer.parseInt(intent.getExtras().get("NotifyCount")
.toString()), notification);
}
My problem now is it does set and trigger the alarm manager every day. But let's say today I did not run the apps, it does prompt me a notification to notify me. But after a while, I launch the app, then it prompt me again.
I wonder is there any way to set the notification to just notify once per day regardless of how many times I launch the apps. I was actually thinking of something like cookies or shared preference.
Thanks in advance.
EDIT
public class BudgetAlarm extends BroadcastReceiver {
private NotificationManager mNotificationManager;
private Notification notification;
@Override
public void onReceive(Context context, Intent intent) {
saveDay(context);
if (sameDay(context) == false) {
mNotificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(context, 1,
new Intent(), 0);
notification = new Notification(R.drawable.ic_launcher,
"Notification", System.currentTimeMillis());
notification.setLatestEventInfo(context, "Budget Reminder",
"Your monthly expenses nearly exceed the budget!",
contentIntent);
mNotificationManager.notify(
Integer.parseInt(intent.getExtras().get("NotifyCount")
.toString()), notification);
saveDay(context);
}
}
private boolean sameDay(Context context) {
boolean isSameDay = false;
SharedPreferences pref = context.getSharedPreferences("PrefKey",
Context.MODE_PRIVATE);
Calendar cal = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("dd.MM.yyyy");
Date today = cal.getTime();
String day = format.format(today);
String savedDate = pref.getString("SaveDateKey", "NONE");
if (savedDate.equals(day)) {
isSameDay = true;
} else {
isSameDay = false;
}
return isSameDay;
}
private void saveDay(Context context) {
SharedPreferences pref = context.getSharedPreferences("PrefKey",
Context.MODE_PRIVATE);
Editor editor = pref.edit();
Calendar cal = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("dd.MM.yyyy");
Date today = cal.getTime();
String day = format.format(today);
editor.putString("SaveDateKey", day);
editor.commit();
}
}
I think You are on the right way with shared preferences. This could be a scenario in Your app: make a method to know if the same day is equal, if not, save the date when You start the app:
private boolean sameDay(){
boolean isSameDay = false;
SharedPreferences pref = getApplicationContext().getSharedPreferences(YOUR_PREF_KEY, Context.MODE_PRIVAT);
Calendar cal = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("dd.MM.yyyy");
Date today = cal.getTime();
String day = format.format(today);
String savedDate = pref.getString(YOUR_SAVED_DATE_KEY,"NONE");
if(savedDate.equals(day){
isSameDay=true;
}else{
isSameDay=false;
}
return isSameDay;
}
And to save the current day:
private void saveDay(){
SharedPreferences pref = getApplicationContext().getSharedPreferences(YOUR_PREF_KEY, Context.MODE_PRIVAT);
Editor editor = pref.edit();
Calendar cal = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("dd.MM.yyyy");
Date today = cal.getTime();
String day = format.format(today);
editor.putString(YOUR_SAVED_DATE_KEY,day);
editor.commit();
}
And then You just handling this inside Your onReceive():
if(sameDay==true){
//don´t notify
}else{
//notify and save the day
saveDay();
}