How to check if current user is logged in android

Question

How to check if current user is logged in android. I have an external database, I have successfully connected it to the database. I need to check if the user is logged in or not

if user not logged will display {register activity} otherwise will display {my info activity}

You can use shared preference for that. Check [this](http://stackoverflow.com/a/21703572/1777090) answer. — MysticMagicϡ, Mar 20 '14 at 08:12

score 19 · Answer 1 · edited May 23 '15 at 09:22

It can be done by sharedpreferences and if you want to do from database then take one Boolean and save log in info according to user id and then when you first time login then make it true and after that any time just fetch that Boolean and if true then {my info activity} other wise {register activity} simple is it dude :)

like this for using sharedpreferences when first time login then

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
prefs.edit().putBoolean("Islogin", Islogin).commit(); // islogin is a boolean value of your login status

and anytime when u want to get status then

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        boolean Islogin = prefs.getBoolean("Islogin", false); // get value of last login status

Now check

if(Islogin)
        {   // condition true means user is already login
            Intent i = new Intent(this, "your login activity");
            startActivityForResult(i, 1);
        }

else
{
    // condition false take it user on login form 
}

For token validation you do need to make web server call to check. — Abhiroop Nandi Ray, Apr 20 '20 at 10:41

score 1 · Accepted Answer · answered Sep 08 '16 at 15:18

1

According to this:

To check if the user is signed-in, call isConnected().

if (mGoogleApiClient != null && mGoogleApiClient.isConnected()) {
   // signed in. Show the "sign out" button and explanation.
   // ...
} else {
   // not signed in. Show the "sign in" button and explanation.
   // ...
}

answered Sep 08 '16 at 15:18

diegomercado

177
1
5

Then, how to implement it inside a fragment? – Daisy Oct 08 '18 at 09:12
Will it work if after login via Google user changes the password of his Gmail account (from Gmail website) – Kartik Agarwal Oct 14 '18 at 20:06

score 0 · Answer 3 · answered Mar 20 '14 at 08:13

0

Save the state in PreferenceManager.

You can see a little example here

answered Mar 20 '14 at 08:13

MiguelAngel_LV

1,200
5
16

The link works, but you get a https error because the web has 7 years... – MiguelAngel_LV Jan 19 '21 at 10:42

score 0 · Answer 4 · answered Mar 20 '14 at 08:19

If you just want to test if the user is logged in to the device, it is sufficient to do this with SharedPreference as others indicated.

However, if you want to ensure that the user is logged in to your external website, it is more complicated and requires more work.

1- Your website should have remember me functionality by setting some cookie

2- Once the user logged in successfully to your website from the app; you need to preserve the remember me cookie (e.g. serialize it to some file)

3- When the user open the app, you have to load that cookie if exists and make a request to the server to ensure if the user still logged in or not (e.g. handle the HTTP response code)

score 0 · Answer 5 · answered May 15 '14 at 11:36

0

This can be done in two ways. One is storing them in a global variables and second is storing the data in shared preferences. see this example.

answered May 15 '14 at 11:36

Aliti

2,025
2
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How to check if current user is logged in android

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