CODEWITHSUNDEEP
javaandroidpassword-protection
Miki7
Miki7

Reputation: 75

Making master password and storing it on android device

I'm currently working on an app, and on the home screen, there should be something like this: https://i.sstatic.net/RqzLw.png So my question is: how do i store that data in the android device? I did not find anything helpfull on google, all i got is mysql data storage. Thanks.

Upvotes: 0

Views: 87

Answers (2)

dahui
dahui

Reputation: 2166

You can use SharedPreferences to easily save and load simple values such as Strings, see below:

Saving a String

SharedPreferences prefs = context.getSharedPreferences("app", MODE_PRIVATE);
Editor edit = prefs.edit();
edit.clear();
edit.putString("password", txtPass.getText().toString().trim());
edit.commit();

Loading

SharedPreferences userDetails = context.getSharedPreferences("app", MODE_PRIVATE);
String pass = prefs.getString("password", null);

If you're storing passwords you might want to look into more secure methods or use encryption/decryption techniques when saving and loading.

Upvotes: 1

slanecek
slanecek

Reputation: 806

You can use Shared Preferences, but it's not adviced to save sensitive informations (such as passwords) in a phone.

Even you would encrypt a password, it could easily be decrypted back because Android apps can easily be decompiled.

Upvotes: 0

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