Category Archives: General

More stuff coming soon …

Each week the past 3 weeks I thought I was going to have time to put together some new tutorials and post them, but “stuff happens” and I have not had time. I have a great list of tutorial suggestions that have come from readers and I really want to work on them and get them posted!

Sorry for the long delay!

In other news, I have completed the writing of Volume 4 of my App Inventor tutorial guide books. The book is now undergoing proof reading and final formatting. I hope to have it available as both an e-book and as a printed book.  I can now announce the title of the book “App Inventor: Graphics, Animation and Charts”. More details including a table of contents and sample pages as we get closer to release!

Update on FB – website link and Volume 4 App Inventor Guide

Facebook – Web site link

Short update – my web site at http://appinventor.pevest.com was linked directly to FB so that comments entered here, appeared there, and comments entered on the web site, appeared here on Facebook. All automatically.

However, that link is now broken. I was using a WordPress plugin to cross link the web site and FB page but last week, the makers of the plugin discontinued its use and the cross linking is no longer working. Hopefully I can find a new plugin to perform that function!

It was a nice to have feature as I could just check for updates on the web site without having to also check on FB. Oops! Now that this feature is gone, I will try to check the FB page more frequently.

Volume 4 Update

Volume 4 of my App Inventor guides is nearing completion. I have to write one last demo program,  the  text for one chapter, proof read the entire text, and begin the publishing process. I will announce the book topic once I get the final chapter written (I prefer not to pre-announce until I know the availability). I can announce now that Volume 4 should be available in both print and e-book formats! Producing the print version adds a little delay to the final release but the final result should be very good.

UPDATE: Sales of the print version of Volume 4 are being discontinued as of October 18, 2016, due to rampant copyright theft. There are more used copies for sale than the total number of printed books actually sold. Based on sales, readers prefer the e-book version – therefore I am in process of discontinuing sales of the print version. The e-book continues to be available.

appinventor.pevest.com server is back online, 18 Jan 2016

The server that hosts the appinventor.pevest.com virtual server suffered an outage late on January 17th, continuing into early January 18th. The Internet Service Provider that hosts the server has restored service. From their note to me, it seems there may have been a denial of service attack on their infrastructure.

I was in the midst of writing a new tutorial on creating “pretty user interface” components in App Inventor; that tutorial was lost in the outage. Not as bad as it sounds as the code and illustrations were all saved – I just need to rewrite the text.

Writing Android apps in Javascript

Another way to develop apps for Android is to write apps in the Javascript program scripting language (note – Javascript is not related to Java, in spite of the similar name). By using a special platform called Cordova, it is possible to package Javascript programs into a self contained Android .apk file that runs on the Android OS.

Even better – it is possible to package your Javascript app, using Cordova, into forms that run on iOS (iPhones and iPad) and Windows Phone too!

Continue reading Writing Android apps in Javascript

Graphical programming and robotics-the tools get better and easier

MIT App Inventor is a “graphical programming language” in that we assemble programs by clicking and dragging symbols on screen, interactively, rather than writing our programs as text.

This weekend, FIRST Robotics kicks off its 2016 season. Students will design, construct, test and deploy a complex robotic system to meet the 2016 competition challenge (to be unveiled on Saturday).

The robot control system may be programmed in C++, Java, National Instrument’s LabView, RobotBuilder and/or GRIP.

Continue reading Graphical programming and robotics-the tools get better and easier