Android:How can I check if wifi authenticated or not

Question

My application is using wifi manager in android, but I am facing an error in a situation the situation is::WIFI is turned on but it is not authenticated(with our company wifi user name and password)at that time my application is force closing,

code I am using is

try{
    if (connectivityManager != null && 
       (connectivityManager.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTED) ||
       (connectivityManager.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTED))
    { 
        //You are connected, do something online.
        return true;
    }
    else if (connectivityManager.getNetworkInfo(0).getState() == NetworkInfo.State.DISCONNECTED ||  
             connectivityManager.getNetworkInfo(1).getState() == NetworkInfo.State.DISCONNECTED ) 
    {             
        //Not connected.        
        //Toast.makeText(getApplicationContext(), "You must be connected to the internet", Toast.LENGTH_LONG).show();
        loginTask.myPublishProgress("You must be connected to the internet");
        return false; 
    }   
    }
catch(NullPointerException ae)
   {
        ae.printStackTrace();
        loginTask.myPublishProgress("You must be connected to the internet");

   }

can you post your logcat? – itsrajesh4uguys May 07 '13 at 05:50 — itsrajesh4uguys, May 07 '13 at 05:50

score 1 · Answer 1 · edited May 23 '17 at 10:27

1

Use SupplicantState

SupplicantState supState; 
wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
supState = wifiInfo.getSupplicantState();

See this answer in stackoverflow

If COMPLETED - All authentication completed.

edited May 23 '17 at 10:27

Community

1
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answered May 07 '13 at 05:49

Arun C

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don't know about old APIs, but SupplicantState will rarely provide enough transitions when a bad password is input to ensure authentication is the "disableReason" in the now hidden APIs - i.e. we can never know if authentication failed in recent APIs – leRobot May 09 '16 at 10:36
Not useful for me, my device wi-fi is not authenticated but this code returns me COMPLETED every time. – Manish Jain Sep 01 '16 at 12:18

score 1 · Accepted Answer · edited May 23 '17 at 12:34

1

Hi check the below answers:

How to detect when WIFI Connection has been established in Android?

How do I see if Wi-Fi is connected on Android?

edited May 23 '17 at 12:34

Community

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answered May 07 '13 at 05:56

itsrajesh4uguys

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These answers only check effective connection, and don't provide enough detail to assert authentication is the issue. My comment elsewhere in this post: "don't know about old APIs, but SupplicantState will rarely provide enough transitions when a bad password is input to ensure authentication is the "disableReason" in the now hidden APIs - i.e. we can never know if authentication failed in recent APIs" – leRobot May 09 '16 at 10:37
Agreed! For api Above 21 its possible to check using ConnectivityManager.NetworkCallback() However, there is no solution check for api below 21, if anyone finds that solution please help. Thank you. – Junia Montana Mar 08 '20 at 20:36

score 0 · Answer 3 · answered May 07 '13 at 06:33

Don't use

conectivityManager.getNetworkInfo(0) and getNetworkInfo(1).

Instead of that use

For WiFi

NetworkInfo conectivityManager = connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

For mobile networks(3g)

NetworkInfo conectivityManager = connectivity.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

Cause on Jelly Beans will make trouble hardcoding values like that.

Android:How can I check if wifi authenticated or not

3 Answers3