You launch this from within the Account Settings area of your Gmail account.
It uses a simplistic gui physical block programming style that is very similar to MIT’s SCRATCH programming language for kids.
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I started the example that make a kitty.png pic purr a purr.mp3 on a click event.
The blocks are written in Java at the lowest level… even though you assemble the higher level blocks.
Java 6 SDK is required and also contains the JRE.
The “Blocks Editor” is super slow to launch… You click on this file that you download AppInventorForAndroidCodeblocks.jnlp It opens in java 6.
That launches the android 2.2 emulator and then it takes a good 5 minutes to go from a black screen to a screen with robot and a slide lock… then you drag the slide lock across.
Initial App Inventor Emulator Black Android TextScreen
Drag Green Lock Right To Unlock App Inventor Emulator Android Phone
Slide Unlock Emulator Ready To Select For Connection After A Few Minutes
I had to stop and restart the .jnlp file a time or two… it’s SLOW and not obvious whether to stop and restart or not.
Android App Inventor Emulator Green Zoom HelloPurrKitty
Since it is horribly slow and difficult to get connection to the emulator, I have moved on for now to trying the Android SDK AVD and Eclipse and it’s ADT Android plug-in for Eclipse… and the emulator without Eclipse if possible.
Miscellaneous 