SeekBar for Android Preferences
This is a simple SeekBar for Android Preferences. Feel free to add it to your own project and modify it to accommodate your needs.
See file /src/res/xml/preferences.xml for an example of usage. Replace com.yourpackage.www by your own package. Don't forget to add your own package to /src/java/SeekBarPreference.java. Minimum value is always 1. Tested on Android 5.0.2 only. To know how to use Android Preferences see this guide : https://developer.android.com/guide/topics/ui/settings.html.