androidandroid-intentnfc

When trying to detect NFC tag, my app is not launched, instead system NFC service is launched


I am trying to launch my app when an NFC tag is scanned.

I added to my manifest:

<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="android.hardware.nfc" android:required="true" />

and in my activity

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.nfc.action.NDEF_DISCOVERED" />
            <category android:name="android.intent.category.DEFAULT" />
            <data android:scheme="http" />
            <data android:scheme="https" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.nfc.action.NDEF_DISCOVERED" />
            <category android:name="android.intent.category.DEFAULT" />
            <data android:mimeType="application/vnd.com.example" />
        </intent-filter>
        <meta-data android:name="android.nfc.action.TECH_DISCOVERED"
            android:resource="@xml/nfc_tech_filter" />

With following XML:

<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <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>

But I can scan a tag, the system NFC service (Pixel 8) is launched

What am I missing?


Solution

  • Just found that I had to separate the techs in the Manifest

    <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
        <tech-list>
            <tech>android.nfc.tech.IsoDep</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.NfcA</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.NfcB</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.NfcF</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.NfcV</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.Ndef</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.NdefFormatable</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.MifareClassic</tech>
        </tech-list>
        <tech-list>
            <tech>android.nfc.tech.MifareUltralight</tech>
        </tech-list>
    </resources>