Connecting Android 4 Mobile phone to Arduino Help!!!

Dear Friends

would you help me to find a good website for good projects on linking Android 4 mobile phones with Arduino +USB host shield, i need both APK, and Sketch pre made open sources to read analogue signals from Arduino in Android 4 mobile phones?, i am interested in te direct USB cable link

thank you for help

Cross-post deleted.

Hello , What do you mean of Crossing post?, can u explain?

I mean posting the same question in different parts of the forum.

It wastes time - don't do it.

why not use bluetooth?