Instance Property

maximumPossibleForce

The maximum possible force for a touch.

Declaration

@property(nonatomic, readonly) CGFloat maximumPossibleForce;

Discussion

The value of this property is sufficiently high to provide a wide dynamic range for values of the force property.

This property is available on devices that support 3D Touch or Apple Pencil. To check at runtime if a device supports 3D Touch, read the value of the forceTouchCapability property on the trait collection for any object in your app with a trait environment.

See Also

Getting Touch Attributes

tapCount

The number of times the finger was tapped for this given touch.

timestamp

The time when the touch occurred or when it was last mutated.

type

The type of the touch.

UITouchType

The type of touch received.

phase

The phase of the touch.

UITouchPhase

The phase of a finger touch.

force

The force of the touch, where a value of 1.0 represents the force of an average touch (predetermined by the system, not user-specific).

altitudeAngle

The altitude (in radians) of the stylus.

- azimuthAngleInView:

Returns the azimuth angle (in radians) of the stylus.

- azimuthUnitVectorInView:

Returns a unit vector that points in the direction of the azimuth of the stylus.