how to determine, if an internet connection is currently available and active on an android device?

Question

i have this android application that requires to load data from a remote server via the internet. this update-functionaliy obviously requires the device to not only be connected to some kind of network, but also to the internet.

so: is want to schedule the update-service to some date and when it starts, it should determine whether it actually CAN reach the target server or not. therefore, a simple "is the device connected to wifi?" does not suffice, as the device may be connected to a wireless network that does not offer internet access. something like a PING is required...

whats the easiest / best way to determine, if there is an internet connection is available i.e. server is reachable?

score 4 · Answer 1 · answered Nov 11 '10 at 14:11

boolean connected;            
ConnectivityManager connectivityManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
            if(connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED || 
                    connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED) {
                //we are connected to the internet
                connected = true;
            }
            else
                connected = false;

add persmission: <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

problem: what if my device is connected to some wifi network that does NOT function as an internet gateway? — xenonite, Dec 02 '10 at 10:38

score 2 · Answer 2 · answered Nov 11 '10 at 12:58

2

Just try to connect to your server, and timeout if you haven't started download progress in an acceptable period of time.

answered Nov 11 '10 at 12:58

San Jacinto

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score 1 · Accepted Answer · edited May 23 '17 at 12:28

1

Take a look at this answer here on StackOverflow. It should be just what you are looking for.

edited May 23 '17 at 12:28

Community

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answered Nov 11 '10 at 13:12

Octavian Helm

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score 0 · Answer 4 · edited May 23 '17 at 12:14

0

Here is the best answer to problem:

Device is connected on router but there is no internet gateway active.

edited May 23 '17 at 12:14

Community

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answered Jan 03 '12 at 15:05

virusss8

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how to determine, if an internet connection is currently available and active on an android device?

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