Radio buttons
Use
radio buttons to indicate a set of mutually exclusive but related
choices.
Users can perform the following action with radio buttons:
Action
|
BlackBerry
devices with a trackpad only
|
BlackBerry devices with a touch screen and a trackpad
|
Select a radio button.
|
Press the Space key or click the
trackpad.
|
- Tap the item.
- Press the Space key.
- Click the trackpad.
|
Best practice: Implementing radio buttons
- Use radio buttons for two or more choices when space is not an issue. If space is an issue, consider using a drop-down list instead.
- Use the RadioButtonField class to create radio buttons. For more information about creating radio buttons, see the API reference for the BlackBerry® Java® SDK and the BlackBerry
Java Application UI Quick Reference Guide.
- Verify that the content for radio buttons remains static. Content for radio buttons should not change depending on the context.
- Do not start an action when users select a radio button.
For example, do not open a new screen.
- Align radio buttons vertically.
- Group and order values logically (for example, group related radio buttons together or include the most common values first). Avoid ordering radio buttons
alphabetically; alphabetical order is language specific.
Guidelines for labels
- Use clear, concise labels. Verify that the label clearly describes what occurs when users select the radio button. If the labels are too long, they wrap.
- Place labels on the right side of radio buttons.
- Use sentence case capitalization.
- Do not use end punctuation.
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