Book Image

LiveCode Mobile Development Cookbook

By : Dr. Edward Lavieri
Book Image

LiveCode Mobile Development Cookbook

By: Dr. Edward Lavieri

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LiveCode Mobile Development Cookbook
Dr. Edward Lavieri
Sep, 2014 | 256 pages
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Table of Contents (17 chapters)
LiveCode Mobile Development Cookbook
LiveCode Mobile Development Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
LiveCode Mobile Basics
LiveCode Mobile Basics
Introduction
Setting up your mobile environment for iOS development
Setting up your mobile environment for Android development
Defining icons and images for iOS development
Defining icons and images for Android development
Configuring standalone application settings for iOS applications
Configuring standalone application settings for Android applications
Using the simulator
Saving a standalone mobile app
2
Human-computer Interfaces
Human-computer Interfaces
Introduction
Creating a new main stack
Displaying web pages in your app
Masking user passwords
Including glow effects on buttons
Including state graphics on buttons
Getting an object's properties
Setting custom properties
Aligning interface objects
Dynamically displaying interface objects
Getting the user input
Recording user actions
Restricting the user input
Using mobile keyboards
Using a date picker
Using a time picker
Using effects between cards
Using buttons for navigation
3
Loops and Timers
Loops and Timers
Introduction
Implementing a countdown timer
Implementing a count-up timer
Pausing a timer
Resuming a timer
Using a loop to count
Using a loop to iterate through a list
4
Managing Text
Managing Text
Introduction
Reading the user input
Searching text
Replacing text
Combining text
Encrypting text
Writing text
Reading text
Sorting text
Formatting text
Appending text
Translating text into Pig Latin
5
Communications
Communications
Introduction
Initiating a phone call
Sending an e-mail
Formatting an e-mail
6
Data Structures
Data Structures
Introduction
Using arrays
Using multidimensional arrays
Saving external data
Loading external data
Reading XML
Writing XML
Using SQLite
Using MySQL
7
External Media
External Media
Introduction
Loading an image
Capturing an image from a mobile device's camera
Resizing an image
Playing a movie
Controlling the movie playback
Playing an audio file
8
Using MobGUI
Using MobGUI
Introduction
Setting up MobGUI
Using a navigational bar
Using a button
Using a navigational button
Using a slider
Using a toggle button
Using a list button
Using a progress bar
9
Using Animation Engine
Using Animation Engine
Introduction
Setting up Animation Engine
Moving objects along a line
Moving objects along a polygonal path
Moving objects along an elliptical path
Moving objects along a circular path
Stopping a moving object
Calculating the distance between two points
Using speed
Using collision listeners
Simulating gravity
10
Miscellaneous
Miscellaneous
Introduction
Adding numbers
Subtracting numbers
Multiplying numbers
Dividing numbers
Using advanced math
Randomizing numbers
Opening a web page
Querying web data
Using the geometry manager
Using invisible objects
Taking snapshots of a card
Taking snapshots of an area on a card
Detecting the operating system
Index
Index

Subtracting numbers

Subtracting numbers using LiveCode is a simple task. To demonstrate how to subtract one number from another, we will create a user interface that accepts two numbers, and when the equals sign is selected, the results will be displayed.

How to do it...

Follow the steps in this recipe to create an interface and LiveCode script that subtracts one number from another:

  1. Open LiveCode and create a new main stack.

  2. Set the background color of the default card to black.

  3. Drag a new text entry field to the card and set the following properties:

    • Name: fld_nbr1

    • Width: 88

    • Height: 31

    • Location: 194, 53

    • Font: Courier

    • Text size: 18

    • Align text right

  4. Drag a second text entry field to the card and set the following properties:

    • Name: fld_nbr2

    • Width: 88

    • Height: 31

    • Location: 194, 95

    • Font: Courier

    • Text size: 18

    • Align text right

  5. Drag a third text entry field to the card and set the following properties:

    • Name: fld_nbr3

    • Width: 88

    • Height: 31

    • Location: 194, 151

    • Font: Courier

    • Text size: 18

    • Align...

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