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LFE Medieninformatik
Final Presentation Project Thesis
Exploring Limitations of M bil Pl tfMobile Platforms
Supervisor: Prof Dr Heinrich HußmannSupervisor: Prof. Dr. Heinrich Hußmann
Advisor: Florence T. Balagtas‐Fernandez
Date: 12.05.2009
LFE Medieninformatik
ProcedureProcedure1 Motivation1. Motivation
2. Approach
3. Experimental Study
4 Conclusion4. Conclusion
5/12/2009 Exploring Limitations of Mobile Platforms 2
LFE Medieninformatik
MotivationMotivation• Mobility getting more important• Mobility getting more important
• Current development on mobile device marketp– Mobile devices with advanced hardware capabilities
‐> Feature‐rich applications for mobile usage
5/12/2009 Exploring Limitations of Mobile Platforms 3
LFE Medieninformatik
Motivation• Focus on limitation of
Motivation• Focus on limitation of
– Display size:• 240 x 320 pixel or less
– Input techniques :• stylus
• touch and gestures
• Keypad
• QWERTY keyboard
5/12/2009 Exploring Limitations of Mobile Platforms 4
LFE Medieninformatik
Approach• Android Framework (Release 1 1)
Approach• Android Framework (Release 1.1)
• Comparison of Mobile Platforms– Java MEJava ME
– Android
• Implementation of Application for Social Networking
5/12/2009 Exploring Limitations of Mobile Platforms 5
LFE Medieninformatik
Approach• Development of two prototypes dealing with:
Approach• Development of two prototypes dealing with:
– Screen components• Arrangement
• Interaction via menu
– Different input techniques• Hardware dependency
5/12/2009 Exploring Limitations of Mobile Platforms 6
LFE Medieninformatik
ApproachApproach• Scrollable View vs Tabbbed View• Scrollable View vs. Tabbbed View
5/12/2009 Exploring Limitations of Mobile Platforms 7
LFE Medieninformatik
ApproachApproach• Device Menu vs Context Menu• Device Menu vs. Context Menu
5/12/2009 Exploring Limitations of Mobile Platforms 8
LFE Medieninformatik
ApproachApproach• Direct Textinput vs Modal Pop‐up Windows• Direct Textinput vs. Modal Pop‐up Windows
5/12/2009 Exploring Limitations of Mobile Platforms 9
LFE Medieninformatik
Experimental Study• Participants chose Tabbed View over Scroll View
Experimental Study• Participants chose Tabbed View over Scroll View
80
100
Scroll View
40
60
Scroll View
Tab View
Neither
0
20
Figure : Rankings of the preferred Arrangement of the Profile
5/12/2009 Exploring Limitations of Mobile Platforms 10
LFE Medieninformatik
Experimental Study• Problems with Modal Windows for Input
Experimental Study• Problems with Modal Windows for Input
80
100
40
60 Direct Input
Modal Windows
Neither
0
20
Figure: Rankings to the most difficult input techniques
5/12/2009 Exploring Limitations of Mobile Platforms 11
LFE Medieninformatik
Experimental Study• Problems with date entry via ‘DatePicker’
Experimental Study• Problems with date entry via DatePicker
4,5
5
4
,
Textual Date Input
DatePicker
3
3,5
Figure: Ratings of the statement “it was easy to input a date”
5/12/2009 Exploring Limitations of Mobile Platforms 12
LFE Medieninformatik
Experimental Study• Controversial opinions about Context Menu
Experimental Study• Controversial opinions about Context Menu
– Significantly bad ranking for Accessibility
– Equal ranking for Preferenceq g
5/12/2009 Exploring Limitations of Mobile Platforms 13
LFE Medieninformatik
Conclusion• Framework provides:
Conclusion• Framework provides:
– Wide range of screen components resolving limitations
– Gives developer great power over layout
5/12/2009 Exploring Limitations of Mobile Platforms 14
LFE Medieninformatik
Conclusion• Remaining issues
Conclusion• Remaining issues
– Appearance of some widgets
– Difficult Access of Context Menu
– Hardware Dependency (Framework Release 1.1)Hardware Dependency (Framework Release 1.1)
Low Amount of devices running Android– Low Amount of devices running Android
5/12/2009 Exploring Limitations of Mobile Platforms 15
LFE Medieninformatik
?ANY QUESTIONS?
5/12/2009 Exploring Limitations of Mobile Platforms 16
