Check if Connected to Internet & if isConnected to Wifi in Android.

By | November 6, 2014

This sample code checks whether the android device is connected to Internet and
if it is connected to internet, it is connected to Wifi or Not?

package com.coderzheaven.demo1;

import android.app.Activity;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;

public class MainActivity extends Activity {

	NetworkInfo activeNetwork;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		if (connectedToInternet())
			System.out.println("Connected to Internet.");
		else
			System.out.println("Not Connected to internet");

		if (isWifi())
			System.out.println("Connected to Wifi.");
		else
			System.out.println("Not Connected to Wifi");
	}

	Boolean connectedToInternet() {
		ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

		activeNetwork = cm.getActiveNetworkInfo();
		return (activeNetwork != null && activeNetwork
				.isConnectedOrConnecting());

	}

	Boolean isWifi() {
		return (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI);
	}
}

MAKE SURE YOU ADD BELOW PERMISSION TO THE ANDROID MANIFEST

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

2 thoughts on “Check if Connected to Internet & if isConnected to Wifi in Android.

  1. abcdef

    Well, no! Being connected to WiFi does not mean that you’re connected to Internet. Think about a situation you’re connected to wifi router with no uplink connection at all: Your code would happily claim you’re connected to Internet in that case.

    Reply
    1. James Post author

      Yes, you are right, you have to check for the response code in that case.
      if responsecode == 200 connected.
      I just demonstrated a way to check if device is connected or not.

      Thanks for the comment.

      Reply

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