ORKContinuousScaleAnswerFormat Class Reference

Inherits from ORKAnswerFormat : NSObject
Declared in ORKAnswerFormat.h

The ORKContinuousScaleAnswerFormat class represents an answer format that lets participants select a value on a continuous scale.

The continuous scale answer format produces an ORKScaleQuestionResult object that has a real-number value.

– initWithMaximumValue:minimumValue:defaultValue:maximumFractionDigits:vertical:maximumValueDescription:minimumValueDescription:

Returns an initialized continuous scale answer format using the specified values.

- (instancetype)initWithMaximumValue:(double)maximumValue minimumValue:(double)minimumValue defaultValue:(double)defaultValue maximumFractionDigits:(NSInteger)maximumFractionDigits vertical:(BOOL)vertical maximumValueDescription:(nullable NSString *)maximumValueDescription minimumValueDescription:(nullable NSString *)minimumValueDescription

Parameters

maximumValue

The upper bound of the scale.

minimumValue

The lower bound of the scale.

defaultValue

The default value of the scale. If this value is out of range, the slider is displayed without a default value.

maximumFractionDigits

The maximum number of fractional digits to display.

vertical

Pass YES to use a vertical scale; for the default horizontal scale, pass NO.

maximumValueDescription

A localized label to describe the maximum value of the scale. For none, pass nil.

minimumValueDescription

A localized label to describe the minimum value of the scale. For none, pass nil.

Return Value

An initialized scale answer format.

Discussion

This method is the designated initializer.

Declared In

ORKAnswerFormat.h

– initWithMaximumValue:minimumValue:defaultValue:maximumFractionDigits:vertical:

Returns an initialized continuous scale answer format using the specified values.

- (instancetype)initWithMaximumValue:(double)maximumValue minimumValue:(double)minimumValue defaultValue:(double)defaultValue maximumFractionDigits:(NSInteger)maximumFractionDigits vertical:(BOOL)vertical

Parameters

maximumValue

The upper bound of the scale.

minimumValue

The lower bound of the scale.

defaultValue

The default value of the scale. If this value is out of range, the slider is displayed without a default value.

maximumFractionDigits

The maximum number of fractional digits to display.

vertical

Pass YES to use a vertical scale; for the default horizontal scale, pass NO.

Return Value

An initialized scale answer format.

Declared In

ORKAnswerFormat.h

– initWithMaximumValue:minimumValue:defaultValue:maximumFractionDigits:

Returns an initialized horizontal continous scale answer format using the specified values.

- (instancetype)initWithMaximumValue:(double)maximumValue minimumValue:(double)minimumValue defaultValue:(double)defaultValue maximumFractionDigits:(NSInteger)maximumFractionDigits

Parameters

maximumValue

The upper bound of the scale.

minimumValue

The lower bound of the scale.

defaultValue

The default value of the scale. If this value is out of range, the slider is displayed without a default value.

maximumFractionDigits

The maximum number of fractional digits to display.

Return Value

An initialized scale answer format.

Discussion

This method is a convenience initializer.

Declared In

ORKAnswerFormat.h

  maximum

The upper bound of the scale. (read-only)

@property (readonly) double maximum

Declared In

ORKAnswerFormat.h

  minimum

The lower bound of the scale. (read-only)

@property (readonly) double minimum

Declared In

ORKAnswerFormat.h

  defaultValue

The default value for the slider. (read-only)

@property (readonly) double defaultValue

Discussion

If the value of this property is less than minimum or greater than maximum, the slider has no default value.

Declared In

ORKAnswerFormat.h

  maximumFractionDigits

The maximum number of fractional digits to display. (read-only)

@property (readonly) NSInteger maximumFractionDigits

Declared In

ORKAnswerFormat.h

  vertical

A Boolean value indicating whether the scale is oriented vertically. (read-only)

@property (readonly, getter=isVertical) BOOL vertical

Declared In

ORKAnswerFormat.h

  numberStyle

A formatting style applied to the minimum, maximum, and slider values.

@property ORKNumberFormattingStyle numberStyle

Declared In

ORKAnswerFormat.h

  numberFormatter

A number formatter applied to the minimum, maximum, and slider values. Can be overridden by subclasses.

@property (readonly) NSNumberFormatter *numberFormatter

Declared In

ORKAnswerFormat.h

  maximumValueDescription

A localized label to describe the maximum value of the scale. (read-only)

@property (readonly, nullable) NSString *maximumValueDescription

Declared In

ORKAnswerFormat.h

  minimumValueDescription

A localized label to describe the minimum value of the scale. (read-only)

@property (readonly, nullable) NSString *minimumValueDescription

Declared In

ORKAnswerFormat.h

  maximumImage

An image for the upper bound of the slider.

@property (strong, nullable) UIImage *maximumImage

Discussion

The recommended image size is 30 x 30 points. The maximum range label will not be visible.

Declared In

ORKAnswerFormat.h

  minimumImage

An image for the lower bound of the slider.

@property (strong, nullable) UIImage *minimumImage

Discussion

The recommended image size is 30 x 30 points. The minimum range label will not be visible.

Declared In

ORKAnswerFormat.h