Human interface guidelines

Question 1

Modality

Answer 1

Modality is a design technique that presents content in a separate, focused mode that prevents interaction with the parent view and requires an explicit action to dismiss.

Question 2

Presenting content modally can:

Answer 2

Ensure that people receive critical information and, if necessary, act on it

Provide options that let people confirm or modify their most recent action

Help people perform a distinct, narrowly scoped task without losing track of their previous context

Give people an immersive experience or help them focus on a complex task

Question 3

Modality best practises

Answer 3

Present content modally only when there’s a clear benefit.
Aim to keep modal tasks simple, short, and narrowly focused.
Take care to avoid creating a modal experience that feels like an app within your app.
Consider using a full-screen modal style for in-depth content or a complex task.
Always give people an obvious way to dismiss a modal view.
When necessary, help people avoid data loss by getting confirmation before closing a modal view.
Make it easy to identify a modal view’s task.
Avoid presenting a modal view on top of another modal view.

Question 4

Modals

Answer 4

Action sheets

Activity views

Alerts

Popovers

Sheets

Question 5

Charting data

Answer 5

Charts provide efficient ways to communicate complex information without requiring people to read and interpret a lot of text.

Question 6

Charts

Answer 6

An effective chart highlights a few key pieces of information in a dataset, helping people gain insights and make decisions
A chart comprises several graphical elements that depict the values in a dataset and convey information about them.

Question 7

Marks (chart)

Answer 7

Choose a mark type based on the information you want to communicate about the data. Some of the most familiar mark types are bar, line, and point

Question 8

When use charts

Answer 8

Use a chart when you want to highlight important information about a dataset.
Keep a chart simple, letting people choose when they want additional details.
Make every chart in your app accessible.

Question 9

Designing effective charts

Answer 9

In general, prefer using common chart types.
such as bar charts and line charts
If you need to create a chart that presents data in a novel way, help people learn how to interpret the chart.
Examine the data from multiple levels or perspectives to find details you can display to enhance the chart.
Match the size of a chart to its functionality, focus, and level of detail.
Maintain continuity among multiple charts that focus on the same data.