Shared Preferences - max length of a single value

Question

I am storing String into shared preferences, but I wasn't able to find out maximal length of string I can store. Do you know this value?

If it is really huge, like over 10 kilobyte, you might want to save it some other way, maybe a file on disk. — Fred, Jul 11 '14 at 14:51

score 93 · Accepted Answer · edited Feb 19 '19 at 14:48

By Romain Guy From the Question Asked Here,

Whatever the maximum length of a Java string is. So something like Integer.MAX_VALUE chars.

I suppose while SharedPreference is an XML file stored with One Tag if you store only One Pair/Object. So there is no limit to write String in that if you think like you are writing in a file..(Theoretically)

But Actually what happens is that, while you are assigning value to SharedPreference using put/get function at that time you Reading/Writting value in String Object..so the limit becomes to store value at one time equal to Size limit of String Object of Java.

So while writting the code: Limit of SharedPreference String Size = Java String Object Size Limit(Practically)

`Integer.MAX_VALUE` is 2147483647. – Fred Jul 11 '14 at 14:47 — Fred, Jul 11 '14 at 14:47

score 25 · Answer 2 · answered Dec 15 '11 at 08:01

25

Shared preference is stored in /data/data/[package_name]/shared_prefs/[app name].xml, I think there's no limit as per android architecture.

answered Dec 15 '11 at 08:01

Sunil Kumar Sahoo

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Is shared preference safe place to keep api token in android mobile app? Kindly suggest. Thanks. – Kamlesh May 14 '21 at 17:30
2

@Kamlesh Use EncryptedSharedPreferences – Muneesh Feb 17 '22 at 12:47
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https://pub.dev/packages/encrypted_shared_preferences – Kamlesh Feb 17 '22 at 13:05

score 20 · Answer 3 · edited Feb 19 '19 at 14:52

When I trying to save the max length string into the SharedPreferences in my device, it throw a Memory Exception when SharedPreferences data exceed 1.42 MB.

So if you have more than 1.42 MB data size to save its better to save use SQLite database.

According to developer.android.com:

If you have a relatively small collection of key-values that you'd like to save, you should use the SharedPreferences APIs.

Shared Preferences - max length of a single value

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