Podcast
Questions and Answers
What is the recommended touch target size for touchscreen objects?
What is the recommended touch target size for touchscreen objects?
What is the minimum recommended text size for legibility at a typical viewing distance without zooming on an iOS device?
What is the minimum recommended text size for legibility at a typical viewing distance without zooming on an iOS device?
What should be ensured to avoid distortion when displaying images on an iOS device?
What should be ensured to avoid distortion when displaying images on an iOS device?
What type of layout should be created to ensure that users can see primary content without zooming or scrolling horizontally on an iOS device?
What type of layout should be created to ensure that users can see primary content without zooming or scrolling horizontally on an iOS device?
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What is the purpose of macro reflow in UI design?
What is the purpose of macro reflow in UI design?
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What is the recommended contrast ratio for small text against its background, according to the W3C?
What is the recommended contrast ratio for small text against its background, according to the W3C?
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In UI design, what does UX refer to?
In UI design, what does UX refer to?
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Which website provides UI design tips for iOS?
Which website provides UI design tips for iOS?
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What are the common elements discussed under Material Design?
What are the common elements discussed under Material Design?
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What does UI refer to in the context of an app or system?
What does UI refer to in the context of an app or system?
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Which method should be used as a best practice to register and unregister the sensor event listener in Android?
Which method should be used as a best practice to register and unregister the sensor event listener in Android?
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What is the impact of failing to disable sensors that have substantial power requirements in Android?
What is the impact of failing to disable sensors that have substantial power requirements in Android?
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How can limited data be managed in Android to reduce bandwidth usage?
How can limited data be managed in Android to reduce bandwidth usage?
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In the context of finite battery, what does Android system not do when the screen turns off?
In the context of finite battery, what does Android system not do when the screen turns off?
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What are the constraints that need to be considered when developing for RecyclerView in the context of mobile UX?
What are the constraints that need to be considered when developing for RecyclerView in the context of mobile UX?
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Which of the following is NOT a benefit of using binary serialization formats like Protocol Buffers or FlatBuffers?
Which of the following is NOT a benefit of using binary serialization formats like Protocol Buffers or FlatBuffers?
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What is the recommended approach for conserving battery while transferring data on an Android device?
What is the recommended approach for conserving battery while transferring data on an Android device?
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In the context of hand-held usage, what does 'divided user attention' refer to?
In the context of hand-held usage, what does 'divided user attention' refer to?
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What is the purpose of caching static resources in a mobile app?
What is the purpose of caching static resources in a mobile app?
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Why is using Wi-Fi recommended for data transfers in most cases?
Why is using Wi-Fi recommended for data transfers in most cases?
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Study Notes
Touchscreen and Text Size Guidelines
- Recommended touch target size for touchscreen objects is generally 44x44 pixels to ensure ease of interaction.
- Minimum recommended text size for legibility on an iOS device is 11 points at typical viewing distances to maintain clarity without zooming.
Image and Content Display
- Ensure proper aspect ratio and resolution to avoid distortion when displaying images on iOS devices.
- Create a responsive layout that provides primary content viewable without zooming or horizontal scrolling.
UI Design Considerations
- Macro reflow in UI design enables efficient layout adjustments and optimizes rendering processes in response to content changes.
- Recommended contrast ratio for small text against its background is at least 4.5:1, according to W3C standards.
- UX in UI design refers to User Experience, emphasizing the overall experience a user has with the application.
Resources and Common Elements
- Apple’s Human Interface Guidelines website provides valuable tips for UI design on iOS.
- Common elements under Material Design include elevation, padding, margin, typography, and responsive layouts.
Understanding UI and Event Handling
- UI stands for User Interface, which is the point of interaction between a user and an application or system.
- Best practice for managing sensor event listeners in Android is to register and unregister them in appropriate lifecycle methods to prevent memory leaks.
Power management and Data Efficiency
- Failing to disable power-hungry sensors in Android can lead to significant battery drain.
- Limited data can be managed by implementing caching strategies and data compression to reduce bandwidth usage.
Android System Behavior and Compatibility
- When the screen turns off, the Android system does not perform heavy background processing to conserve battery life.
- Constraints for developing with RecyclerView in mobile UX include managing view recycling effectively and optimizing for performance within limited resources.
Data Transfer and User Attention
- A recommended approach for conserving battery while transferring data on Android devices is to utilize background tasks effectively.
- 'Divided user attention' in handheld usage refers to users multitasking or being distracted, impacting their focus and interaction with the app.
Resource Management Recommendations
- Caching static resources in a mobile app reduces loading times and enhances performance by minimizing repetitive data requests.
- Using Wi-Fi for data transfers is recommended for its faster speeds and lower costs compared to mobile data, improving overall user experience.
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Description
Explore the principles and components of UI/UX design for mobile programming in Sem 1 2023/2024. Learn about Android common UI components, material design, environment, style, and user interface interaction tips.
