I am developing a sharing app in MIT app Inventor ,
please guide me how to create file sharing app from one device to another using WiFi or WiFi direct
Great. Welcome to the forum. What have you done so far? You might share your Blocks to get specific recommendations.
You can search the Forum (using the magnifying glass icon) and get these great suggestions Search results for 'file sharing' - MIT App Inventor Community
You are new so here are some resources to help you learn to use the AI2 tools. A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook http://www.appinventor.org/book2 ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.
There is a free programming course here http://www.appinventor.org/content/CourseInABox/Intro and the aia files for the projects in the book are here: http://www.appinventor.org/bookFiles
How to do a lot of basic things with App Inventor are described here: http://www.appinventor.org/content/howDoYou/eventHandling .
Also look here App inventor español. Offline. Tutorial. Ejemplos. Instalación. Códigos. Juegos. Curso gratis de App inventor. and here Tutorial Index | imagnity for more tutorials.