I'm going to use the SharedPreferences Keys to store my app informations so when I open the app again after onDestroy the information will still the same.
I'm just wondering is it safe to use SharePreferences ? I mean is there a way to hack or get the KEYS from the SharePreferences ?
and does all Android Platforms have the SharePreferences ?
thanks .
sharedPreferences arent safe..
sharedPreferences should just store config/setting-data not encrypted..
if u want to store critical data - you have to write it encrypted in a dataBase/sharedPrefs
btw .. http://android-developers.blogspot.de/2013/02/using-cryptography-to-store-credentials.html
You shouldn't store any unencrypted valuable information(passwords, private user information etc.) in SharedPreferences. SharedPreferences are just plain XML files in app directory on internal storage.
If you need to store smth private - you definitely need to encrypt it first.
Related
I know that SharedPreferences is an efficient way to store data but is the database used by android to store SharedPreferences read only even if you have root access?
Thanks in advance!
There is nothing you can do if a user has SUDO permission on the device. If a device is rooted, they can dig into your SharedPreferences all they want.
If you are storing passwords or other sensitive data in your app's local data, consider doing some sort of obfuscation like SHA or MD5 hashing before adding to prefs.
How can I protect username and password saved in preferences?
Some sample code would be nice.
If you store passwords in plain text in an SQLite database or shared preferences, someone with root access might see them. Encrypting credentials prior to saving them locally would be safer, but still not perfect if someone reverse-engineers your app and gets the encryption key.
Have a look at the AccountManager. Also, this post might help you.
If you find that too complicated for your purpose, at least encrypt passwords before storing them into SharedPreferences! You can find more information, explanation and code here, too.
SharedPreferences sharedPreferences = MyApplication.getContext()
.getSharedPreferences(ApplicationConstants.SHARED_PREF_NAME,
Activity.MODE_PRIVATE);
Shared prefernces are stored under Android/data/data/yourApp on the internal file system of android and it's not accessible to other apps, so you can privately save data on shared preference
ACtually shared prefrence data store in your application memory and no other app can access that so beware of this
What is the purpose of SharedPreferences in Android?
Why it is used ?
Where it want to be use?
Shared preferences is used to save any primitive data: booleans, floats, ints, longs, and strings. This data will persist across user sessions (even if your application is killed).
for more visit here
reference earlier answered
You can read the developer android site about SharedPreference to save light data till your application exists into user's device. It will remain saved even after existing your application.
Storage in android with SharedPreference
SharedPreference in android
Hope it will help you..!!!
SharedPreferences is used to permanently store preferences in key:value pair
SharedPreferences is accessible by all the Activity(ies) of an app. Other app cannot directly access the content of shared_prefs
App stores its data/preferences in the SharedPreferences.
E.g. Say in a game u can store ur score, game level, user name, no of kill, etc in the preferences; so that it is accessible all throughout the game; yet by that particular game only.
Game "Gold Miner 2" does it. It is only one example.
Svox tts save ANDROID_ID in preferences file;
You need to keep in mind that if u delete the app, all SharedPreferences will be deleted (/data/data//shared_prefs);
I am using SharedPreferences to store my keys and my crypted messages.If i store them crypted in it and then decrypt in my app it takes some time, but i am confused about if it will secure to store them decrpyted in SharedPreferences.
Can anybody reach my SharedPreferences MODE_PRIVATE with special app or something like that ?
On a rooted phone, yes, it can access the shared preferences for your app. Also, on any phone the user can delete all the data that it's stored in shared preferences by clearing the cache in the application manager.
A safe way to store data would be to encrypted it with AES and save it in a text file in the root folder of your app.
I basically want to be able to have multiple SharedPreferences files for my app. The names of these will be based off of a string entered by the user. Then when the user wants to restore, I want to create a popup that will allow them to pick from all available SharedPreferences files. Is there a way to see what SharedPreferences files are in the directory? Or is there a better way to store this?
TIA
You could save a csv list of SharedPreferences as a SharedPreference...
But I think if you are going to have multiple configurations, better approaches would be either a small SqliteDatabase or ".ini" files in the internal storage.
If you insisted on using SharedPreferences as the storage mechanism, what you could do is use the default shared preferences (get it with SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);) to store a list of the preference files created (using something like the putStringSet method at http://developer.android.com/reference/android/content/SharedPreferences.Editor.html#putStringSet%28java.lang.String,%20java.util.Set%3Cjava.lang.String%3E%29). You can then retrieve them later and generate the popup list.