Usage
A picker displays one or more lists of distinct values that people can choose from.
iOS Picker button
How to test a picker button
Given that I am on a screen with a picker button
1 Keyboard only
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WHEN I use the arrow keys or ctrl + tab to move focus to a picker I SEE focus is visually indicated (strongly if high contrast enabled)
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Then when I use the spacebar I SEE the picker opens
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Then when I use the arrow key I SEE the selection changes
2
VoiceOver
screenreader
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WHEN I use a screenreader AND I swipe to focus on a picker
- I HEAR its purpose is clear and matches visible label
- I HEAR it identifies itself as a button
- I HEAR any visible label is read with the picker in a single swipe
- I HEAR it expresses its value (and state if disabled/dimmed)
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Then when I doubletap with the picker in focus I HEAR the selection is changed
3 Device settings
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When I use Text resize I SEE text can resize up to 200% without losing information
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When I use Increased contrast I SEE focus outline becomes high contrast
1 Keyboard actions
| When I use | I see/hear |
|---|---|
| Arrow keys or ctrl + tab | Focus visibly moves to the picker |
| Spacebar | Expands/collapses picker |
| Arrow keys | Selects options |
2 Mobile screenreader gestures
| When I use | I hear |
|---|---|
| Swipe | Focus moves to the picker, expresses its name, role, state |
| Doubletap | Picker displays options |
3 Screenreader output
| Reads | I hear |
|---|---|
| Name | Its purpose is clear and matches visible label |
| Role | It identifies itself as a button |
| Group | Any visible label is read with the picker in a single swipe |
| State | It expresses its value (and state if disabled/dimmed) |
4 Device settings
| When I use | I see |
|---|---|
| Text resize | Text can resize up to 200% without losing information |
| Increased contrast | Focus outline becomes high contrast |