Post on 20-Jun-2020
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CSCE 4623 - Mobile Programming
Alexander Nelson
August 26, 2019
University of Arkansas - Department of Computer Science and Computer Engineering
Introduction
Why Mobile Programming?
1.43 Billion Smartphones sold in 20181
88% of mobile phones sold are Smartphones
Worldwide Android Smartphone market Share = 76%2
US: iOS = 56, Android 44%
Put simply, they are everywhere
1https://www.digitaltrends.com/mobile/
2018-smartphone-sales-decline-news/2Strategy Analytics
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Why is Mobile Programming Challenging?
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
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Designing User Interfaces
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
What are the challenges?
• How do you build the interface?
(Android: XML and Event Driven)
• How do you interact with the user?
• What about accessibility?
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Networking
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
What are networking options?
• Wide area networks (WAN) e.g.
Cellular, Wi-Fi
• Wireless Local Area Networks
(WLAN) e.g. Wi-Fi
• Wireless Personal Area Networks
(WPAN) e.g. Bluetooth, ZigBee
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Why do we need to know OS?
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
Example OS Calls
• Reading/writing files
• Interprocess Communication
• Threading
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Accessing the Internet
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
Vast majority of applications need
access to the Internet
These communications are typically
standard interfaces
• Webservices (i.e. REST)
• Interfaces (e.g. HTML for
webpages)
• Other services (e.g. SSH, IMAP,
RDP)
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Sensors enable new technological interaction
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
Enables pervasive computing at
personal scale
You are carrying these sensors in your
pocket:
• Cameras
• GPS
• Accelerometers
• Microphone
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Phones are nearing traditional computing specs
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
Example Limitations
• Storage (≈ 64GB)
• CPU† (60% SC / (40-100) Task
dependent% MC vs. i7)
• RAM† (4 GB)
†Comparisons for iPhone XS
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Phones are nearing traditional computing specs
User InterfaceDesign
NetworkingWLAN and WPAN
OperatingSystems
Web andCloud Services
Built-InSensors
Limited HardwareResources
Example Limitations
• Storage (≈ 64 − 512GB)
• CPU† (60% SC / (40-100) Task
dependent% MC vs. i7)
• RAM† (4 GB)
• Battery
†Comparisons for iPhone XS
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The biggest limitation is the condition of the
mobile user
There is a need for immediacy and abrupt
change
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Typical phone specification (iPhone XS)
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Course Administration
Course mechanics
Course Webpage:
sites.uark.edu/ahnelson/csce-4623-mobile-programming/
Syllabus is on the website.
Course Communication:
https://csce4623-uark.slack.com/
This slack channel is to be the primary mode of communication
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Homework - Due Friday by Midnight
Sign up on the Slack website
Use your UARK username as the slack username.
Download Android Studio
https://developer.android.com/studio/index.html
Video will be on the website by end of day Friday. Send screenshot
of android studio in direct message to my slack user (ahnelson)
5% of the first project grade.
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