Get Device mac adress in Android Nougat and O programmatically

Question

I have an application, which required device mac address. I'm getting mac address in Marshmallow and below easily but problem with android nougat and O. So how to find mac.

Answer 1

Changed since 6.0 and later: https://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-hardware-id

To provide users with greater data protection, starting in this release, Android removes programmatic access to the device’s local hardware identifier for apps using the Wi-Fi and Bluetooth APIs. The WifiInfo.getMacAddress() and the BluetoothAdapter.getAddress() methods now return a constant value of 02:00:00:00:00:00.

To access the hardware identifiers of nearby external devices via Bluetooth and Wi-Fi scans, your app must now have the ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permissions.

Behavior Changes in 7.0:

Device owners can access device identifiers. A Device owner can access the Wi-Fi MAC address of a device, using DevicePolicyManagewr.getWifiMacAddress(). If Wi-Fi has never been enabled on the device, this method returns a value of null.