Part 1 of this tutorial introduced Bluetooth communications and implemented a simple method of sending text data back and forth between two Android devices over the Bluetooth wireless link. If you are not familiar with using App Inventor’s Bluetooth component, start with Part 1. In Part 2, a data packet concept is introduced to guide … Continue reading Part 2: Sending numeric data using App Inventor Bluetooth communications →
(Some very minor updates were made to this in November 2019). This tutorial covers basic App Inventor Bluetooth communications code. Subsequent tutorials will add additional features. To implement and test this sample code, you need access to two Android devices – one to act as a Bluetooth “server” and the other to act as … Continue reading Part 1: Basic Bluetooth communications using App Inventor →
This post is a major update to a previous post on reading and writing text files using App Inventor. This revision includes information on how to locate the text files you create in your App Inventor apps, plus how to transfer those files from your smart phone or tablet to your computer. An earlier blog … Continue reading Updated: Writing and Reading Text Files Using App Inventor →
A frequent search topic on this blog is how to use lists. “Lists” are a way of storing a collection of data in App Inventor programs. Many other programming languages provide a number of methods for storing collections of data including arrays, records, even lists, and even something called “collections” (imagine that!) App Inventor provides … Continue reading Using Lists in App Inventor →
Update: When the program is run in AI2 Companion, it behaves differently than when run as a standalone “build” .apk app. CLICK HERE FOR A MAJOR UPDATE TO THIS TUTORIAL ON TEXT FILES! Also, lots more information on files, CSV files, TinyDB, TinyWebDB and Fusion Tables in Volume 3 – App Inventor 2 Databases and … Continue reading Writing to and reading from text files in App Inventor programs →
Help yourself to faster programming by purchasing my App Inventor 2 Guides from any of the following vendors – thank you very much! Detailed descriptions of all the books are below, including Table of Contents and some sample chapters. Where to Buy App Inventor 2 Introduction (Volume 1 e-book) Step-by-step guide to easy Android programming Buy … Continue reading App Inventor Books →