How to delete SharedPreferences automatically after one month?
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I want to delete SharedPreferences, if they exist, after one month automatically. I could not find any solutions. Is this possible to make?
Thanks a lot.
android 
android-studio edited Jan 4 at 17:14
dharms
3,6311224
asked Jan 4 at 17:04
NinaNina
82
add a comment |
I want to delete SharedPreferences, if they exist, after one month automatically. I could not find any solutions. Is this possible to make?
Thanks a lot.
android android-studio edited Jan 4 at 17:14
dharms
3,6311224
asked Jan 4 at 17:04
NinaNina
82
look into services and broadcasts. after one month, delete shared pref.
– soldfor
Jan 4 at 17:14
Use the AlarmManager
– Rishabh Rawat
Jan 4 at 17:24
add a comment |
I want to delete SharedPreferences, if they exist, after one month automatically. I could not find any solutions. Is this possible to make?
Thanks a lot.
android android-studio edited Jan 4 at 17:14
dharms
3,6311224
asked Jan 4 at 17:04
NinaNina
82
I want to delete SharedPreferences, if they exist, after one month automatically. I could not find any solutions. Is this possible to make?
Thanks a lot.
android android-studio android android-studio edited Jan 4 at 17:14
dharms
3,6311224
asked Jan 4 at 17:04
NinaNina
82
edited Jan 4 at 17:14
dharms
3,6311224
asked Jan 4 at 17:04
NinaNina
82
edited Jan 4 at 17:14
dharms
3,6311224
edited Jan 4 at 17:14
dharms
3,6311224
edited Jan 4 at 17:14
dharms
3,6311224
3,6311224
asked Jan 4 at 17:04
NinaNina
82
asked Jan 4 at 17:04
NinaNina
82
asked Jan 4 at 17:04
NinaNina
82
82
look into services and broadcasts. after one month, delete shared pref.
– soldfor
Jan 4 at 17:14
Use the AlarmManager
– Rishabh Rawat
Jan 4 at 17:24
add a comment |
look into services and broadcasts. after one month, delete shared pref.
– soldfor
Jan 4 at 17:14
Use the AlarmManager
– Rishabh Rawat
Jan 4 at 17:24
look into services and broadcasts. after one month, delete shared pref.
– soldfor
Jan 4 at 17:14
look into services and broadcasts. after one month, delete shared pref.
– soldfor
Jan 4 at 17:14
Use the AlarmManager
– Rishabh Rawat
Jan 4 at 17:24
Use the AlarmManager
– Rishabh Rawat
Jan 4 at 17:24
add a comment |
3 Answers
3
active
oldest
votes
It depends.
The easiest way is to delete it when the user starts the app.
When the apps is created, you check the SharedPreferences for the last updated time.
If it's null (the first time), you save the current time in milliseconds as a long.
If it's not null, you read it and compare it against the current time. If it less than a month, you do nothing. If it's more than a month, you clear the shared preferences and, after clearing it, insert the new time.
Something like:
long lastUpdate = sharedPreferences.getLong(LAST_UPDATE, -1);
if(lastUpdate == -1) {
//First time
sharedPreferences.edit().putLong(LAST_UPDATE, System.currentTimeMillis()).apply();
} else {
boolean isMoreThanAMonth = //Here you should do the math. it depends, you want to consider a month like 30 days, or you want to know if it was in another month... somehthing like that
if(isMoreThanAMonth) {
sharedPreferences.edit().clear().apply()
}
}
Of course, if you want to clear the SharedPreferences even if the user does not open the app you should use a Service. It's more complex and expensive for the OS, so you should try to go for the first one if it fits your requirement.
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
add a comment |
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;
public long firstInstallTime
The time at which the app was first installed. Units are as per System.currentTimeMillis().
Now you can compare two date and get months diffrent by using GregorianCalendar
after you get one month different do as you want..clear sharedPrefrence.edit().clear().commit()
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
add a comment |
One possible way,
1. get the calendar instance.
2. Get maximum day of month.
3. Store in a var1 string in format of dd/mm/yyyy.
4. Get the current date from some calendar object and store in same way from point 3 but in var2.
5. Compare two strings.
6. If match then it will be last day of month and call delete() on your files.
Done.
answered Jan 4 at 19:13
Viraj SViraj S
299111
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
It depends.
The easiest way is to delete it when the user starts the app.
When the apps is created, you check the SharedPreferences for the last updated time.
If it's null (the first time), you save the current time in milliseconds as a long.
If it's not null, you read it and compare it against the current time. If it less than a month, you do nothing. If it's more than a month, you clear the shared preferences and, after clearing it, insert the new time.
Something like:
long lastUpdate = sharedPreferences.getLong(LAST_UPDATE, -1);
if(lastUpdate == -1) {
//First time
sharedPreferences.edit().putLong(LAST_UPDATE, System.currentTimeMillis()).apply();
} else {
boolean isMoreThanAMonth = //Here you should do the math. it depends, you want to consider a month like 30 days, or you want to know if it was in another month... somehthing like that
if(isMoreThanAMonth) {
sharedPreferences.edit().clear().apply()
}
}
Of course, if you want to clear the SharedPreferences even if the user does not open the app you should use a Service. It's more complex and expensive for the OS, so you should try to go for the first one if it fits your requirement.
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
add a comment |
It depends.
The easiest way is to delete it when the user starts the app.
When the apps is created, you check the SharedPreferences for the last updated time.
If it's null (the first time), you save the current time in milliseconds as a long.
If it's not null, you read it and compare it against the current time. If it less than a month, you do nothing. If it's more than a month, you clear the shared preferences and, after clearing it, insert the new time.
Something like:
long lastUpdate = sharedPreferences.getLong(LAST_UPDATE, -1);
if(lastUpdate == -1) {
//First time
sharedPreferences.edit().putLong(LAST_UPDATE, System.currentTimeMillis()).apply();
} else {
boolean isMoreThanAMonth = //Here you should do the math. it depends, you want to consider a month like 30 days, or you want to know if it was in another month... somehthing like that
if(isMoreThanAMonth) {
sharedPreferences.edit().clear().apply()
}
}
Of course, if you want to clear the SharedPreferences even if the user does not open the app you should use a Service. It's more complex and expensive for the OS, so you should try to go for the first one if it fits your requirement.
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
add a comment |
It depends.
The easiest way is to delete it when the user starts the app.
When the apps is created, you check the SharedPreferences for the last updated time.
If it's null (the first time), you save the current time in milliseconds as a long.
If it's not null, you read it and compare it against the current time. If it less than a month, you do nothing. If it's more than a month, you clear the shared preferences and, after clearing it, insert the new time.
Something like:
long lastUpdate = sharedPreferences.getLong(LAST_UPDATE, -1);
if(lastUpdate == -1) {
//First time
sharedPreferences.edit().putLong(LAST_UPDATE, System.currentTimeMillis()).apply();
} else {
boolean isMoreThanAMonth = //Here you should do the math. it depends, you want to consider a month like 30 days, or you want to know if it was in another month... somehthing like that
if(isMoreThanAMonth) {
sharedPreferences.edit().clear().apply()
}
}
Of course, if you want to clear the SharedPreferences even if the user does not open the app you should use a Service. It's more complex and expensive for the OS, so you should try to go for the first one if it fits your requirement.
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
It depends.
The easiest way is to delete it when the user starts the app.
When the apps is created, you check the SharedPreferences for the last updated time.
If it's null (the first time), you save the current time in milliseconds as a long.
If it's not null, you read it and compare it against the current time. If it less than a month, you do nothing. If it's more than a month, you clear the shared preferences and, after clearing it, insert the new time.
Something like:
long lastUpdate = sharedPreferences.getLong(LAST_UPDATE, -1);
if(lastUpdate == -1) {
//First time
sharedPreferences.edit().putLong(LAST_UPDATE, System.currentTimeMillis()).apply();
} else {
boolean isMoreThanAMonth = //Here you should do the math. it depends, you want to consider a month like 30 days, or you want to know if it was in another month... somehthing like that
if(isMoreThanAMonth) {
sharedPreferences.edit().clear().apply()
}
}
Of course, if you want to clear the SharedPreferences even if the user does not open the app you should use a Service. It's more complex and expensive for the OS, so you should try to go for the first one if it fits your requirement.
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
answered Jan 4 at 18:02
Rodrigo Ezequiel Arias RobertsRodrigo Ezequiel Arias Roberts
836
836
add a comment |
add a comment |
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;
public long firstInstallTime
The time at which the app was first installed. Units are as per System.currentTimeMillis().
Now you can compare two date and get months diffrent by using GregorianCalendar
after you get one month different do as you want..clear sharedPrefrence.edit().clear().commit()
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
add a comment |
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;
public long firstInstallTime
The time at which the app was first installed. Units are as per System.currentTimeMillis().
Now you can compare two date and get months diffrent by using GregorianCalendar
after you get one month different do as you want..clear sharedPrefrence.edit().clear().commit()
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
add a comment |
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;
public long firstInstallTime
The time at which the app was first installed. Units are as per System.currentTimeMillis().
Now you can compare two date and get months diffrent by using GregorianCalendar
after you get one month different do as you want..clear sharedPrefrence.edit().clear().commit()
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
long installed = context
.getPackageManager()
.getPackageInfo(context.getPackageName(), 0)
.firstInstallTime
;
public long firstInstallTime
The time at which the app was first installed. Units are as per System.currentTimeMillis().
Now you can compare two date and get months diffrent by using GregorianCalendar
after you get one month different do as you want..clear sharedPrefrence.edit().clear().commit()
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
answered Jan 4 at 17:33
Ashvin solankiAshvin solanki
1,682729
1,682729
add a comment |
add a comment |
One possible way,
1. get the calendar instance.
2. Get maximum day of month.
3. Store in a var1 string in format of dd/mm/yyyy.
4. Get the current date from some calendar object and store in same way from point 3 but in var2.
5. Compare two strings.
6. If match then it will be last day of month and call delete() on your files.
Done.
answered Jan 4 at 19:13
Viraj SViraj S
299111
add a comment |
One possible way,
1. get the calendar instance.
2. Get maximum day of month.
3. Store in a var1 string in format of dd/mm/yyyy.
4. Get the current date from some calendar object and store in same way from point 3 but in var2.
5. Compare two strings.
6. If match then it will be last day of month and call delete() on your files.
Done.
answered Jan 4 at 19:13
Viraj SViraj S
299111
add a comment |
One possible way,
1. get the calendar instance.
2. Get maximum day of month.
3. Store in a var1 string in format of dd/mm/yyyy.
4. Get the current date from some calendar object and store in same way from point 3 but in var2.
5. Compare two strings.
6. If match then it will be last day of month and call delete() on your files.
Done.
answered Jan 4 at 19:13
Viraj SViraj S
299111
One possible way,
1. get the calendar instance.
2. Get maximum day of month.
3. Store in a var1 string in format of dd/mm/yyyy.
4. Get the current date from some calendar object and store in same way from point 3 but in var2.
5. Compare two strings.
6. If match then it will be last day of month and call delete() on your files.
Done.
answered Jan 4 at 19:13
Viraj SViraj S
299111
answered Jan 4 at 19:13
Viraj SViraj S
299111
answered Jan 4 at 19:13
Viraj SViraj S
299111
answered Jan 4 at 19:13
Viraj SViraj S
299111
299111
add a comment |
add a comment |
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look into services and broadcasts. after one month, delete shared pref.
– soldfor
Jan 4 at 17:14
Use the AlarmManager
– Rishabh Rawat
Jan 4 at 17:24