I have a solution, but a bad one
Mhhhh i have a solution, but i don´t like it -.-
I wrote an applikation with an empty activity. In "Activity_Create" i start a service (with intent of activity). After it I finish the Activity.
Inside the Service i do all my stuff.
My manifest
AddActivityText(main, <intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED"/>
<category android:name="android.intent.category.DEFAULT"/>
<data android:mimeType="text/plain" />
</intent-filter>)
I don´t like this solution because i see the activity for a few millisecounds. It´s like a black blink.
Maybe somebody know a better solution.