How can i check whether an android device is connected to the web?

Question

How would i know whether my device is connected the web or not? How can i detect connectivity? Any sample code?

Answer 1

First, you need permission to know whether the device is connected to the web or not. This needs to be in your manifest, in the element:

Next, you need to get a reference to the ConnectivityManager:

ConnectivityManager cm = (ConnectivityManager) Context.getSystemService(Context.CONNECTIVITY_SERVICE);

From there you need to obtain a NetworkInfo object. For most, this will mean using ConnectivityManager. getActiveNetworkInfo():

NetworkInfo ni = cm.getActiveNetworkInfo();
if (ni == null) {
    // There are no active networks.
    return false;
}

From there, you just need to use one of NetworkInfo's methods to determine if the device is connected to the internet:

boolean isConnected = ni.isConnected();