App inventor 2 download project source code

MIT is in process of adding a new feature that will enable third parties to add components to App Inventor. This means the capabilities of AI2 will continue to grow in to the future. App Inventor has a bright future ahead! But the download links are no longer working. Obviously, something is broken. I have an idea for a simple fix to get it working but doubt I can fix immediately in my current situation.

I have read the three parts of the Bluetooth lessons. I was wondering the best way to handle multiple tries to create a bluetooth connection. I have a complex app that communicates with six Bluetooth devices. On start up, it re-connects to all of the devices.

I also found that some times, the connection for a device would fail. For my code, I set it to retry the open connection up to 3 times and that seems to have solved the problem. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email.

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Are you saving the. Thanks Like Like. Is this an App Inventor app or some other app? Plus, I had no idea App Inventor was as powerful as it was. I would have never known had it not been for your book. Thanks for publishing it. Also, may I kindly offer a suggestion you may want to consider regarding the layout for future updates? The screenshots and text show up on all my screens very small.

Maybe a font of 2 or 3. Perhaps the screenshots and accompanying text could be made two or three times bigger. The color of the blocks has changed from the examples in the book to what I appear to have on my screen. The text is sometimes opaque about where each block is, but this could be on me. Sometimes it is a little difficult to tell which screen you mean, ie Screen1 or FindCustomer.

Perhaps a little breadcrumb above each screenshot could make it painfully obvious which screen is being referenced. Now of course I can and should be willing to dig a little deeper into the text you wrote and the downloadable projects you kindly provide. My fear is that someone may get frustrated at the not-painfully-obvious screenshots and miss out on the great resource that is your book. I think those are good ideas. I assume you are referring to the web site tutorials and not the e-books?

Regardless, you have some good suggestions and I appreciate your taking the time to pass those along! Images that appear on web pages can be clicked on, and that will usually display a larger version of the image. I should note this in the web posts! In about a month, I am considering go through and re-editing all of the web site blog posts to improve them and hopefully I can fix any of these confusing items. I will look in to that. Regarding 1, the text font and text size are set by the e-reader software.

See if you can use an adjustment to change the text size. Screenshots are always a fixed size in an e-book — I wish there was a way to create variable screen sizes that would appear in different sizes on different types of devices. Have you provided a reviewer with a demonstration app source and apk? If any of the previous points does not apply to your particular contribution, please state so in the comments of the request. Contributions: Slider: Added Slider visible component which is like a ProgressBar that adds a draggable thumb.

Using this approach developer can indicate if the notification dialog is cancelable by user or not. Button updates: Added logic so that when such buttons are pressed, it will give user a visual feedback by changing the button background. Other related work: Developed AppToMarket application. Apps built with App Inventor v1. This utility application was developed to overcome this limitation and was used by App Inventor community developers to convert their apps to publishable apps. More detailed instructions can be found here , a slide show can be seen here , and all the documentation for the project is available in our site.

If you want to make changes to the source, you are going to need to run an automated test suite, and for that you will also need phantomjs. Have a look at the testing section for more information. Note 1: If you are working on a bit linux system, you need to install bit version of: glibc to get a bit version of ld-linux. Note 2: Certain Java 8 features, such as lambda expressions, are not supported on Android, so please don't use them in your changes to the source code.

Consider forking the project if you want to make changes to the sources. If you simply want to run it locally, you can simply clone it. If you decide to fork, follow the instructions given by github.

After that you can clone your own copy of the sources with:. Configuring a remote pointing to this repository is also a good idea if you are forking:. Finally, you will also have to make sure that you are ignoring files that need ignoring:. App Inventor uses Blockly, the web-based visual programming editor from Google, as a core part of its editor.

Blockly core is made available to App Inventor as a git submodule. The first time after forking or cloning the repository, you will need to perform the following commands:. For developers who will be working on Blockly within the context of App Inventor, the preferred checkout procedure is to perform a git submodule init , edit the. After changing. If you need to switch back to a branch that does contains the Blockly and Closure Library sources in the tree, you will need to run the command:.

When switching back, you will need to repeat the initialization and update procedure above. Run this command to run a self-diagnosis of your environment. This command tries to figure out common installation issues and offers you a solution to fix them yourself.

Make sure this passes all the checks before you proceed further. Before compiling the code, an auth key is needed. You can create one by running the following commands:.