Network checking call in android

gistfile1.txt

   <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
 
 ConnectivityReceiver.java
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
 
public class ConnectivityReceiver
        extends BroadcastReceiver {
 
    public static ConnectivityReceiverListener connectivityReceiverListener;
 
    public ConnectivityReceiver() {
        super();
    }
 
    @Override
    public void onReceive(Context context, Intent arg1) {
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        boolean isConnected = activeNetwork != null
                && activeNetwork.isConnectedOrConnecting();
 
        if (connectivityReceiverListener != null) {
            connectivityReceiverListener.onNetworkConnectionChanged(isConnected);
        }
    }
 
    public static boolean isConnected() {
        ConnectivityManager
                cm = (ConnectivityManager) MyApplication.getInstance().getApplicationContext()
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        return activeNetwork != null
                && activeNetwork.isConnectedOrConnecting();
    }
 
 
    public interface ConnectivityReceiverListener {
        void onNetworkConnectionChanged(boolean isConnected);
    }
}


MyApplication.java




import android.app.Application;
 
public class MyApplication extends Application {
 
    private static MyApplication mInstance;
 
    @Override
    public void onCreate() {
        super.onCreate();
 
        mInstance = this;
    }
 
    public static synchronized MyApplication getInstance() {
        return mInstance;
    }
 
    public void setConnectivityListener(ConnectivityReceiver.ConnectivityReceiverListener listener) {
        ConnectivityReceiver.connectivityReceiverListener = listener;
    }
}



Activity 


main inside 
  checkConnection();
  
  
    // Method to manually check connection status
    private void checkConnection() {
        boolean isConnected = ConnectivityReceiver.isConnected();
        condition(isConnected);
    }
 implements ConnectivityReceiver.ConnectivityReceiverListener {

public void condition(){

 if (isConnected) {
            message = "Good! Connected to Internet";
        
        } else {
            message = "Sorry! Not connected to internet";
         
        }

}
 @Override
    protected void onResume() {
        super.onResume();
 
        // register connection status listener
        MyApplication.getInstance().setConnectivityListener(this);
    }
 
    /**
     * Callback will be triggered when there is change in
     * network connection
     */
    @Override
    public void onNetworkConnectionChanged(boolean isConnected) {
        showSnack(isConnected);
    }