Check a Device's Network Connection with complete example

Device can have two types of network connections, either a Wi-Fi or a mobile network connection. If a network connection is unavailable, android application should not respond properly.

To check the network connection, you typically use the following classes:

Check a Device's Network Connection

Connectivity Manager

Network Info

ConnectivityManager class:

You need to instantiate an object of getSystemService class by calling getSystemService() method. Its syntax is given below:

ConnectivityManager connectivitymanager = (ConnectivityManager) this.context.getSystemService(Context.CONNECTIVITY_SERVICE);  

ConnectivityManager method returns an array of NetworkInfo. So you have to receive it like this.

NetworkInfo[] info = connectivitymanager .getAllNetworkInfo();

And you need to declear intrernet permission in your manifest file:

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

Your final code is:

public static boolean isNetworkAvailable(Context context) {
		final ConnectivityManager connectivitymanager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo activeNetworkInfo = connectivitymanager.getActiveNetworkInfo();
		if (activeNetworkInfo != null) { // connected to the internet
			if (activeNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
				// connected to wifi
Toast.makeText(context, "Internet is connected", Toast.LENGTH_SHORT).show();
				return true;
			} else if (activeNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
				// connected to the mobile provider's data plan
Toast.makeText(context, "Internet is connected", Toast.LENGTH_SHORT).show();
				return true;
			}
		}
		Toast.makeText(context, "Internet is not connected", Toast.LENGTH_SHORT).show();
		return false;
	}