CPSC 110-08: Computing on Mobile Phones Spring 2012 Paint Pot: Part II

CS Principles

• Learning Objective 4: The student can use programming as a creative tool.

Setting up the Android Phones

We will be doing this activity with Android phones using the lab macines in MCEC-136. To use the phones with the lab machines, there are a couple of minor setup activities.

However, if you want to be able to use the phones from your laptops, you will also need to make sure that your laptop contains the appropriate driver for your phone by following the above setup instructions.

Paint Pot Part II

Now that you have worked through the Paint Pot I Tutorial, let's add more functionality to our app.

Implement Part II of the Paint Pot Tutorial, by carefully following the step-by-step instructions.

Abstraction: Using Global Variables

One of the important concepts in this version of the Paint Pot app is the use of global variables to make it possible to switch between drawing large dots and small dots.

TODO: Read this short tutorial on variables and values.

Adding a Paint Pot Page to Our Portfolios

(HOMEWORK: If you do not complete this activity in class today, please complete it by Friday before class.)

Create a page titled "Paint Pot" under your Homework category and use it to describe your app.

NOTE that this and other homework pages should be linked into the Portfolio's Navigation under the Homework link. It should not merely be attached to the Homework page itself. In other words, your navigation bar should look something like this:

Your description should contain the following elements:

• One or two paragraphs that describe the Paint Pot app. You should mention some of the key components that the app uses and what you learned about App Inventor. See for an example: my page
• A brief description of what global variables you used in your app and how their use improved the functionality of the app.
• A screenshot of your app's user interface. You can grab this from the designer page in the browser.

  Look for the Take Screenshot application under the Accessories menu on your workstation. NOTE: The screenshot should be embedded right in your description -- not merely uploaded and linked as a file.

• A screenshot of one or more of the blocks used in your app.

• A link to the Paint Pot Tutorial (as a reference). NOTE: The link should be embedded right in your descripion.