Check Internet Connection in Android

Hi All,

There are many features or snippet of code, which we are using in our daily development.
Here I am sharing some common basic function for make our life easy and fast in the development. Below is the code written in the Kotlin.

Permission: Add permission in to the Android manifest file.

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

API level 29 or above use below function which is written in Kotlin.

fun isOnline(context: Context?): Boolean
    {
        var result = false
        val connectivityManager = context?.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            connectivityManager?.run {
                connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)?.run {
                    result = when {
                        hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
                        hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
                        hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
                        else -> false
                    }
                }
            }
        } else {
            connectivityManager?.run {
                connectivityManager.activeNetworkInfo?.run {
                    if (type == ConnectivityManager.TYPE_WIFI) {
                        result = true
                    } else if (type == ConnectivityManager.TYPE_MOBILE) {
                        result = true
                    }
                }
            }
        }
        return result
    }

NOTE : activeNetworkInfo in now deprecated on API level 29. so below method is no loger use.

public boolean isOnline()

       {

              ConnectivityManager cm = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

              NetworkInfo netInfo = cm.getActiveNetworkInfo();

              if (netInfo != null && netInfo.isConnectedOrConnecting()&& cm.getActiveNetworkInfo().isAvailable()&& cm.getActiveNetworkInfo().isConnected())

              {

                     return true;

              }

              return false;

       } 

//There is another method for Internet connection

   public static boolean haveNetworkConnection(final Context context)

       {

              boolean haveConnectedWifi = false;

              boolean haveConnectedMobile = false;

              final ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

              if (cm != null)

              {

                     final NetworkInfo[] netInfo = cm.getAllNetworkInfo();

                     for (final NetworkInfo netInfoCheck : netInfo)

                     {

                           if (netInfoCheck.getTypeName().equalsIgnoreCase("WIFI"))

                           {

                                  if (netInfoCheck.isConnected())

                                  {

                                         haveConnectedWifi = true;

                                  }

                           }

                           if (netInfoCheck.getTypeName().equalsIgnoreCase("MOBILE"))

                           {

                                  if (netInfoCheck.isConnected())

                                  {

                                         haveConnectedMobile = true;

                                  }

                           }

                     }

              }

              return haveConnectedWifi || haveConnectedMobile;

       }

Call Method

if (haveNetworkConnection(context.this))

       {

              //Connection available....

       }

       else

       {

              //No Connection available....

       }

I will be happy if you will provide your feedback or follow this blog. Any suggestion and help will be appreciated.

Thank you :)