NFC tag scan only triggers my app to start

Question

I have an app that scans NFC tags, collects the data from the tag and sends that data to the server. The data on the tag is in the following format:

1,3,3001         


        

Answer 1

You could create a custom mimeType in your NDEF message and then create an intent-filter which matches it exactly. This would mean your app would be launched as it is the most specific filter.

Example:

<intent-filter>
    <action android:name="android.nfc.action.NDEF_DISCOVERED" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:mimeType="application/vnd.com.my.app.package.customString" />
</intent-filter>

Edit: Alternatively if you cannot create a custom mimeType then perhaps your utility will create a custom URL? Then you can create a filter for the custom url instead:

<intent-filter>
            <action android:name="android.nfc.action.NDEF_DISCOVERED" />
            <category android:name="android.intent.category.DEFAULT" />
            <data
                android:scheme="http"
                android:host="www.mywebsite.net" 
                android:path="/customPathForAction" />
</intent-filter>