Continuously check Internet Connection and connection type

Internet connectivity broadcast receiver

NetworkUtills

package com.saud_khan_dev.speed_test.backend.network_utills;

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

public class NetworkUtil {
    public static final int TYPE_WIFI = 1;
    public static final int TYPE_MOBILE = 2;
    public static final int TYPE_NOT_CONNECTED = 0;
    public static final int NETWORK_STATUS_NOT_CONNECTED = 0;
    public static final int NETWORK_STATUS_WIFI = 1;
    public static final int NETWORK_STATUS_MOBILE = 2;

    public static int getConnectivityStatus(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        if (null != activeNetwork) {
            if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
                return TYPE_WIFI;

            if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
                return TYPE_MOBILE;
        }
        return TYPE_NOT_CONNECTED;
    }

    public static int getConnectivityStatusString(Context context) {
        int conn = NetworkUtil.getConnectivityStatus(context);
        int status = 0;
        if (conn == NetworkUtil.TYPE_WIFI) {
            status = NETWORK_STATUS_WIFI;
        } else if (conn == NetworkUtil.TYPE_MOBILE) {
            status = NETWORK_STATUS_MOBILE;
        } else if (conn == NetworkUtil.TYPE_NOT_CONNECTED) {
            status = NETWORK_STATUS_NOT_CONNECTED;
        }
        return status;
    }
}

Network change broadcast receiver

package com.saud_khan_dev.speed_test.backend.broadcast_receivers;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

import com.saud_khan_dev.speed_test.backend.network_utills.NetworkUtil;

public class NetworkChangeReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        int status = NetworkUtil.getConnectivityStatusString(context);
        int connectionType = NetworkUtil.getConnectivityStatus(context);
        Log.e("network reciever", "network reciever");
        if ("android.net.conn.CONNECTIVITY_CHANGE".equals(intent.getAction())) {
            if (status == NetworkUtil.NETWORK_STATUS_NOT_CONNECTED) {
                Toast.makeText(context, "Not connected", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(context, "Connected", Toast.LENGTH_SHORT).show();
            }
            if (connectionType==NetworkUtil.TYPE_MOBILE){
                Toast.makeText(context, "Mobile data", Toast.LENGTH_SHORT).show();
            }else if (connectionType==NetworkUtil.TYPE_WIFI){
                Toast.makeText(context, "Wifi", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

Required Permissions

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

Put it in manifest file

<receiver
    android:name=".backend.broadcast_receivers.NetworkChangeReceiver"
    android:label="NetworkChangeReceiver" >
    <intent-filter>
        <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
        <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
    </intent-filter>
</receiver>