How to check Wifi State (On or off) - Android

Add this line to AndroidManifest.xml

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

Main.java

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

boolean isWifiConnected = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();

if (isWifiConnected) // true if wifi connected
editText.setText("Wifi is connected");
else
editText.setText("Wifi is NOT connected");