!!important!!
in recent android version(after 4.2), you must enable developer options first before using this app.
In order to enable developer options,you must
1.Open the Settings app.
2.(Only on Android 8.0 or higher) Select System.
3.Scroll to the bottom and select About phone.
4.Scroll to the bottom and tap Build number 7 times.
after that you can use this app.
!!important!!


This tool is a simple tool for Developers.You can call Settings UI which can toggle Enabling USB Debug etc,same as Settings -> Applications -> Development.You can check your own appearance to select there.(in your environment,item numbers shown may be different from screenshots).I place this tool at my home screen.
I made this tool for practice purpose and my own use.

※This tool is not usb driver.Please install usb driver if you can't connect device and pc.Usually you can download it from device vendor's site.


ps
I got inquiry,so add notes.
At first, I try to make this tool as widget which can toggle USB Debug settings directly if you touch it.But I don't adapt it because it's not recommended way from Android 1.5. So I choose normal Activity which just finishes after calling Settings UI.

reference(for developers)
http://android-developers.blogspot.com/2009/04/future-proofing-your-apps.html