Flutter: remove all saved shared preferences

Question

I want to delete all saved shared preferences when the user taps on logout. Are there any ways to do this in a single shot without deleting one by one?

Andrii Turkovskyi · Accepted Answer · 2020-08-18T13:13:20.260

94

I use shared_preferences plugin:

In pubspec.yaml

dependencies:
  flutter:
    sdk: flutter

  shared_preferences: ^0.4.3

And in dart file:

import 'dart:async';
import 'package:shared_preferences/shared_preferences.dart';
...
SharedPreferences preferences = await SharedPreferences.getInstance();
await preferences.clear();

I think this is what you need

edited Aug 18 '20 at 13:13

answered Jan 23 '19 at 12:35

Andrii Turkovskyi

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`preferences.clear();` does not seem to be working for me. – Arnold Parge Sep 02 '19 at 19:04
1

It can be if you're checking it right after `preferences.clear();`. I didn't mention, but it is an asynchronous operation, so, maybe you need to use `await preferences.clear();` and check after it – Andrii Turkovskyi Sep 03 '19 at 06:35
I did use `await`. – Arnold Parge Sep 03 '19 at 07:15
It's quite strange. I think you'd better create new question with detailed description of your problem and all that you've done to solve it. – Andrii Turkovskyi Sep 03 '19 at 14:12
Well that would be marked as duplicate of this question. ‍♂️ – Arnold Parge Sep 03 '19 at 14:14
Not if you already tried correct answer to existing question and it didn't help. Just don't forget to mention this in new question with link to this – Andrii Turkovskyi Sep 03 '19 at 14:50
i hae one question, where sharedPreferenecs data is clear automatically? after each app restart? – Apr 23 '20 at 16:42
Consider updating answer to "await preferences.clear();" please.. – Learner Aug 17 '20 at 12:11
@Learner actually, it doesn't matter in this case if we don't need the result. `clear()` method will be launched without `await` too – Andrii Turkovskyi Aug 18 '20 at 13:13
@AndreyTurkovsky true. But when test, sometimes i see mismatches... – Learner Aug 19 '20 at 04:16

GaganSailor · Answer 2 · 2020-03-12T04:18:06.970

You can simply use clear() function with your variable it will clear all the shared preferences.

SharedPreferences preferences = await SharedPreferences.getInstance();
await preferences.clear();

If you want to remove particular key value from shared preferences with key name you can do it like this way as follows.

SharedPreferences preferences = await SharedPreferences.getInstance();
await preferences.remove('KeyNameHere');

score 17 · Answer 3 · answered Jan 23 '19 at 12:34

17

try

final pref = await SharedPreferences.getInstance();
await pref.clear();

answered Jan 23 '19 at 12:34

Sami Kanafani

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score 3 · Answer 4 · edited Apr 25 '21 at 06:14

3

Just try

prefManager = await SharedPreferences.getInstance();
await prefManager.clear();

edited Apr 25 '21 at 06:14

Nickofthyme

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answered Apr 24 '21 at 15:55

shrikanta mazumder

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score 1 · Answer 5 · answered Mar 09 '22 at 17:49

1

To Clear Shared Preferences Data

You should import shared_preferences.dart
write this code into the logout button

onPressed: () { SharedPreferences userData = await SharedPreferences.getInstance(); await userData.clear(); }

answered Mar 09 '22 at 17:49

Motassam ALHamed

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1

score 1 · Answer 6 · answered Sep 24 '22 at 04:02

To clear all shared preferences, try this:

SharedPreferences pref = await SharedPreferences.getInstance();
await pref.clear();

To clear particular key value, try this:

SharedPreferences pref = await SharedPreferences.getInstance();
await pref.remove('KeyNameHere');

score 1 · Answer 7 · answered Nov 15 '22 at 00:34

1

final preferences = await SharedPreferences.getInstance();
await preferences.clear();

answered Nov 15 '22 at 00:34

Lance Olana

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Remember that Stack Overflow isn't just intended to solve the immediate problem, but also to help future readers find solutions to similar problems, which requires understanding the underlying code. This is especially important for members of our community who are beginners, and not familiar with the syntax. Given that, **can you [edit] your answer to include an explanation of what you're doing** and why you believe it is the best approach? – Jeremy Caney Nov 18 '22 at 00:24

Flutter: remove all saved shared preferences

7 Answers7