Post on 24-Dec-2015
transcript
Hack Day
Tweet about Hack Day today! _technovation_
Welcome to Hack Day!
Meet your mentor and your teammates!
Share:–What’s your name?–What school do you go to (or company
do you work for)?–What’s your favorite app?–Why are you excited about the
Technovation Challenge?
Technovation Mission and Vision
Technovation strives to promote women in technology by giving girls the confidence and skills they need to succeed in computer science and entrepreneurship.
Our goal is to empower every girl to see themselves not just as users of technology---but as inventors, designers, builders, and entrepreneurs.
Peer To Peer University: P2PU
P2PU Task #1: Survey and Team Registration
• Before completing tasks for Hack Day, you’ll need to take your pre-survey: surveymonkey.com/s/presurvey2013
• …and register your team (see next two slides)
Register your team
1. Create an account on P2PU: www.p2pu.org
Register your team
2. Complete the Technovation registration form: bit.ly/TCteam13
Earn Badges on P2PU
A digital badge indicates your team's achievement of a skill, quality or interested through your Technovation Challenge Journey. These badges let the Technovation Community know a little more about your team and help us all work together.
Earn Badges on P2PU
Each time you complete one of the Technovation Tasks, your mentor can give your team a badge to award your hard work.
• Beginner-level app building language • Completely web-based tool, requires
an internet connection to use• Must be signed into your Gmail
account first• Two major parts: Designer and Blocks
Editor
App Inventor
App Inventor: Designer
Design the user interface of the app!
App Inventor: Blocks Editor
Program the functionality of the app - how it works!
App Inventor: Emulator
In case you don’t have a real phone to test with you can use the emulator. It simulates a phone on your computer.
– Click on Settings App– Select Wireless &
networks– Select Wi-Fi settings– Select Wi-Fi. A green
check will appear by it.– Select Wi-Fi settings.
Choose the network and password (if there is one) written on the board.
Set-up Wireless
– Click on the Settings App– Select Applications. This
will open a new page.– Select "Unknown sources".
A green check will appear by it.
– Select Development. This will open a new page.
– Select "USB debugging". A green check will appear.
– Select "Stay awake". A green check will appear.
– Hit back button until back at Settings screen.
Phone Settings for Development
Activity: CrystalBall Hack
In this tutorial, you’ll create an app that works like a crystal ball. Users think of a question such as “Will I win my soccer game?” and then tap the screen to see the crystal ball’s response. We’ll walk through it together.
CrystalBall: Getting Started
• To begin, go to gmail.com and sign into your email account
• Create a Gmail account if you don’t have one
• Open up a new tab in your browser, go to http://appinventor.mit.edu/ and click “invent”
• Under My Projects, click “New” and name your project CrystalBall
Activity: CrystalBall Hack
In the Designer• Add a label with the text “What do
you want to know?”• Add a label with the text “Shake the
crystal ball and all will be revealed”• Put the 2 labels in a vertical screen
arrangement• Add a button named “FortuneText”
and set the background to be the Crystal Ball Image
• Set the text of the button to be “”.• Add a label under the the button
that says “Tap to Clear..”• Add an accelerometer
sensor
Activity: CrystalBall Hack
In the Blocks Editor• Get the Shaking Event
Handler for the Accelerometer. • Put in a Set Fortune.Text block
in the event handler.• Connect a call pick random
item from the list to the Set Fortune.Text block
• Connect a make a list block to the list value in the pick random item block.
• Add the text “Yes”, “No”, “Maybe”, and “time will tell” to the list as items
Activity: CrystalBall Hack
In the Blocks Editor• Find the
FortuneText clicked event handler.
• Set the FortuneText.Text to a blank text box.
Activity: CrystalBall Hack
On the phone• Package for the
phone• Test it!
• Most fun part of app-building!• It’s good to always be
thinking how you can make things better• Customizing your app helps
you learn the tools better and prepare to make an app on your own
Customizing Your App
Activity: CrystalBall Hack
How can we customize this app?• Change the look– Background picture
• Add a sound• Add more answers• Other ideas?
• Read the tutorial questions on your worksheet
• Discuss the answers in your group
• Turn in to your teacher• Be prepared to share with the
group
Discussion
• An event is an action that occurs outside the program• Usually from the User!• Examples:–Key presses–Screen Touches
Event-driven Programming
• Just like with a computer, program events happen in your life everyday• Examples–Phone rings–Your friend tosses a ball at you
Events in Real Life
• What do you do when an event happens?–Phone rings •Answer the phone!
–Your friend tosses a ball at you •Catch the ball!
• These are called Event Handlers–Notice they can be different for each
event
Events in Real Life
• In CrystalBall, what was our event?–Phone was shaken
•What did our event handler do?–Displayed an answer from the list!
Event-driven Programming
• A named container that holds a value• The value can change• Your wallet – Sometimes might have $5– Other times it might have $20
• Hair Color– Sally’s is Brown–Michael’s is …
Variables
In this tutorial, you create an app that allows the user to draw lines and dots of various colors on the screen.
PaintPotHack
• Driver – hands on keyboard & mouse• Navigator – reads instructions and
tells driver what to do• Switch every 5-10 minutes• Two brains are better than one
Pair Programming
Pair Programming in Practice
If you have problems• Watch the YouTube videos (Part 1 & 2)
• Post questions to the P2PU forum
Resources
How can we customize the app?– Add more color
buttons– Have a random
color button– Use camera to add
background image– Others?
PaintPotHack
• Read the tutorial questions on your worksheet
• Discuss the answers in your group
• Turn in worksheet to your teacher
• Be prepared to share your answers with the group
Discussion
In this app you will create a game that has a mole that jumps randomly around the screen every half second. If the user successfully touches the mole, then the score increases by one point.
MoleMash Hack
Resources
If you have problems• Watch the YouTube videos (Part 1, 2 & 3)
• Post question P2PU forum
• A named sequence of steps•Why is it useful to make procedures?–Code Reuse, less coding–Only need to change code in one place if there are bugs or updates
Procedure
• What do you do when brushing your teeth?–Put toothpaste on brush, add
water, brush, spit, rinse your brush
• It’s actually several steps represented by “brushing your teeth”
• But your mom only needs to say “brush your teeth” and you know what she means
Procedures in Real Life
What procedures did we use in MoleMash? What did they do?–MoveMole•Update the position of the mole
–UpdateScore•Print the new score
Procedures in MoleMash
What are some ways you have found that work well to find errors in your app?
– Proper Naming– Test frequently– Reread your code– Add Comments– Deactivate code that’s not
in use– Use the Watch feature to
see variables– Do It allows you to test procedures
Debugging
How can we customize it?– Add a second mole– Speed up the mole– Change the look• Change the mole• Change the background
– Add a sound– Others?
MoleMash Hack
• Read the tutorial questions on your worksheet
• Discuss the answers in your group
• Turn in to your teacher• Be prepared to share
Discussion
• Work alone or in pairs to design and develop your own application
• Try to use the tools you’ve learned– Events– Variables– Lists– Procedures– Camera– Buttons
Activity: Create Your Own App
– Labels– Accelerometer– ImageSprites– Timer– Sound
• Have another pair/person test your app– Do they like it?– Is it easy to use?– Do they have suggestions for improvement?
• Describe your app to your group• Continue to work on your app at home • Show your friends & family!
Activity: Create Your Own App
• Read the tutorial questions on your worksheet
• Discuss the answers in your group
• Turn in to your teacher• Be prepared to share your
answers with the group
Discussion
In this tutorial, you’ll create an app that autoresponds to text messages while the user is driving. The user also has the option to have the app speak the message that was received.
Activity: No Text While Driving Hack
Resources
If you have problems• Watch the YouTube videos (Part 1, 2, 3, 4
& 5)
• Post questions to P2PU forum
How can we customize this app?– Custom responses for
different phone numbers
– Others?
Activity: No Text While Driving Hack
• Read the tutorial questions on your worksheet
• Discuss the answers in your group
• Turn in to your teacher• Be prepared to share your
answers with the group
Discussion
• Think-Pair-Share–Share 2 things you learned with a partner–Be prepared to share with the group
• Get the contact info for your team and set up your first meeting for January!
Wrap Up
Before you go!
Tweet us: @_technovation_#technovation
Join our Facebook community: Technovation Challenge