How can I create a settings button in Android's app info page?

Question

Nova Launcher opens their settings with the cogwheel in the upper right. How is this done? How would I place my app's settings activity there?

Answer 1

On Android 7.0 and higher, you can use this <intent-filter> on your settings activity:

<intent-filter>
  <action android:name="android.intent.action.APPLICATION_PREFERENCES" />
  <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

The Settings app should pick that up and make it available to the user via that gear icon.