Examples
- Variants
- Icons
- Sizes
- States


Different button styles for varying emphasis levels.
Properties
Required
NeoButtonVariant
required
The variant/style of the button.
VoidCallback
required
The callback to call when the button is pressed.
Content
String
The text label to display on the button.
PhosphorIconData
The icon to display on the button. (e.g.
PhosphorIconsRegular.plus)NeoButtonIconPosition
default:".leading"
The position of the icon. Only applies when
icon is provided.String
The tooltip text to display when over the button.
bool
Adds a caret icon to the button and rotates it based on this boolean value. Useful for dropdown toggles.
Layout
NeoButtonSize
default:".medium"
The size of the button.
bool
default:"false"
Whether the button should fill the available width.
NeoButtonAlignment
default:".center"
The alignment of the content inside the button. Only applies when
isExpanded is true.State
bool
default:"false"
Shows a spinning indicator and disables interaction. Useful for async operations.
bool
default:"false"
Applies danger styling (typically red colors) to indicate destructive actions like deletion.
bool
default:"true"
Controls whether the button responds to user interaction. Disabled buttons have reduced opacity and show a forbidden cursor.
bool
default:"false"
When enabled, users must hold the button for a specified duration before the action is triggered. Only supported for
NeoButtonVariant.secondary buttons.Duration
default:"Duration(seconds: 1)"
The duration users must hold the button when
requireHold is true.Styling
Color
The background color of the button. Only valid on the
primary variant — use fgColor and fgInteractionColor for other variants.Color
The background color for both hover and pressed states. Overrides the theme-derived interaction color.
Color
The foreground color of all content inside the button (label, icon, caret). Essential when using custom background colors.
Color
The foreground color for both hover and pressed states.
Enums
NeoButtonVariant
Different variants/styles of buttons.primary: Solid fill for high emphasis.secondary: Border-only for medium emphasis.tertiary: No fill or border initially; fills on hover for low emphasis.link: Underlined text style for low-emphasis actions and navigation.
NeoButtonSize
small: Compact size for dense UIs.medium: Standard size for most cases.
NeoButtonAlignment
start: Aligns content to the left.center: Default centering.
NeoButtonIconPosition
leading: Icon before label.trailing: Icon after label.
Best Practices
- Width Constraints: When using
isExpanded: true, always provide width constraints to prevent layout issues by wrapping inExpanded,ConstrainedBox,SizedBox, etc. - Loading States: Use
isLoading: truefor async operations to provide visual feedback and prevent double-taps - Danger Actions: Always use
isDanger: truefor destructive actions like deletion or data loss - Combine with
NeoHapticsin theonPressedcallback for enhanced user experience on supported devices - Limit the number of primary (filled) buttons per screen to avoid decision paralysis
tooltipis essential for accessibility when using icon-only buttons, and helpful for providing additional context on any button- Edge case: If no
labeloriconis provided, the button renders as empty—always provide at least one







