Android NFC读取数据

1、添加相应的权限和gradle引用
<uses-feature
android:name=”android.hardware.nfc”
android:required=”true”/>
<uses-permission android:name=”android.permission.NFC”/>
api ‘com.google.guava:guava:25.1-android‘
2、在res下创建xml文件夹，然后新建xml文件nfc_tech_filter

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <tech-list>
        <resources >
            <tech-list>
                <!--<tech>android.nfc.tech.IsoDep</tech>-->
                <tech>android.nfc.tech.NfcA</tech>
                <!--<tech>android.nfc.tech.NfcB</tech>-->
                <!--<tech>android.nfc.tech.NfcF</tech>-->
                <!--<tech>android.nfc.tech.NfcV</tech>-->
                <tech>android.nfc.tech.Ndef</tech>
                <!--<tech>android.nfc.tech.NdefFormatable</tech>-->
                <!--<tech>android.nfc.tech.MifareClassic</tech>-->
                <!--<tech>android.nfc.tech.MifareUltralight</tech>-->
            </tech-list>
        </resources>
    </tech-list>
</resources>