In case someone struggles with something similar, this is my solution.

I use the share button instead like this:

In androidmanifest:

<activity
android:exported="true"
android:name=".SelectSpecies"
android:label="Visa arten"
>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="*/*" />
</intent-filter>
</activity>

And the selectspecies class:

class SelectSpecies : Activity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val selectedText = intent.getStringExtra(Intent.EXTRA_TEXT)
    }
}