Checking internet connection on android

Sometimes the active connection is not first in the list, or is inactive or in an error state. This is how I would do it:

  NetworkInfo i = conMgr.getActiveNetworkInfo();
  if (i == null)
    return false;
  if (!i.isConnected())
    return false;
  if (!i.isAvailable())
    return false;
  return true;

[EDIT 1] Don't forget to add this permission in the application manifest:

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

Does this help you?

Emmanuel

Is better:

if (conMgr != null) {
    NetworkInfo i = conMgr.getActiveNetworkInfo();
    if (i != null) {
        if (!i.isConnected())
            ret = false;
        if (!i.isAvailable())
            ret = false;                
    }

    if (i == null)
        ret = false;

} else
    ret = false;

with the other form, if "Network i" is equal null then, check after for !i.isConnected() must fail (i is null).

The short answer:

public boolean isNetworkAvailable() {
    ConnectivityManager connectivityManager = (ConnectivityManager)getActivity().getApplicationContext()
                                              .getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
    return activeNetworkInfo != null;
}