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app-inventor

Why do I get an error on response content variable?

I wanted to create an where in I could retrieve using sql select query from my own web server and wanting it to put it on a listpicker. Any advice or tips? I've tried something and I got an error the operation select list cannot accept the arguments [!DOCTYPE], [5].

Here are my blocks. enter image description here

Solution

  • display the responseContent in a label, also use Do it to debug your blocks, see also tip 4 here Top 5 Tips: How to learn App Inventor

    enter image description here

    see also the App Inventor - MySQL interface

    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 do the tutorials http://appinventor.mit.edu/explore/ai2/tutorials.html to learn the basics of App Inventor, then try something and follow the Top 5 Tips: How to learn App Inventor