PS: If you having issues with the NFC Tag not reading, make sure you have your scheme set to vnd.android.nfc in your Manifest. android:scheme=”vnd.android.nfc” For a more .I am learning Android and NFC programming through the official android developer tutorial. What I want is to write an app that will be triggered by NFC tag. When the app starts, I want it to display a toast message containing the UID of the scanned tag. My simple code to achieve this is: