Created
May 18, 2019 22:28
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Check Network Connectivity in android
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package com.mobotechnology.bipinpandey.mvp_hand_dirty.main_activity.broadCastReciever; | |
import android.content.BroadcastReceiver; | |
import android.content.Context; | |
import android.content.Intent; | |
import android.net.ConnectivityManager; | |
import android.net.NetworkInfo; | |
import android.os.AsyncTask; | |
import android.util.Log; | |
import java.net.URL; | |
import java.net.URLConnection; | |
public class CheckConnectivity extends BroadcastReceiver { | |
Click mClick; | |
public void setList(Click click) { | |
mClick = click; | |
} | |
@Override | |
public void onReceive(final Context context, final Intent intent) { | |
final String action = intent.getAction(); | |
if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) { | |
checkConnectivity(context); | |
} | |
} | |
private void checkConnectivity(final Context context) { | |
if (!isNetworkInterfaceAvailable(context)) { | |
mClick.offline(); | |
return; | |
} | |
new AsyncTask<Void, Void, Boolean>() { | |
@Override | |
protected Boolean doInBackground(Void... voids) { | |
return isAbleToConnect(); | |
} | |
@Override | |
protected void onPostExecute(Boolean isConnected) { | |
super.onPostExecute(isConnected); | |
if (isConnected) { | |
mClick.online(); | |
} else { | |
mClick.offline(); | |
} | |
} | |
}.execute(); | |
} | |
//This only checks if the network interface is available, doesn't guarantee a particular network service is available, for example, there could be low signal or server downtime | |
private boolean isNetworkInterfaceAvailable(Context context) { | |
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); | |
NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); | |
return activeNetwork != null && activeNetwork.isConnectedOrConnecting(); | |
} | |
//This makes a real connection to an url and checks if you can connect to this url, this needs to be wrapped in a background thread | |
private boolean isAbleToConnect() { | |
try { | |
URL myUrl = new URL("http://www.google.com"); | |
URLConnection connection = myUrl.openConnection(); | |
connection.setConnectTimeout(1000); | |
connection.connect(); | |
return true; | |
} catch (Exception e) { | |
Log.i("exception", "" + e.getMessage()); | |
return false; | |
} | |
} | |
} |
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