How to check Internet connection in android every N seconds

Question

I want to check state of Internet connection every N seconds how I can do it

I want to send mail when received SMS in android device

Answer 1

Check internet connection every N seconds:

Create a NetworkUtils with isNetworkAvailable() method that returns true or false according to connection status:

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class NetworkUtils {
    public static boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivityManager
                = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        return activeNetworkInfo != null && activeNetworkInfo.isConnected();
    }
}

Create a CheckConnection() class that checks the connection every N seconds:

class CheckConnection extends TimerTask {
    private Context context;
    public CheckConnection(Context context){
        this.context = context;
    }
    public void run() {
        if(NetworkUtils.isNetworkAvailable(context)){
            //CONNECTED
        }else {
            //DISCONNECTED
        } 
    }
}

You can use CheckConnection class from your activity like:

Timer timer = new Timer();
final int MILLISECONDS = 5000; //5 seconds
timer.schedule(new CheckConnection(this), 0, MILLISECONDS);

Hope this helps!