Instance Property

hasTorch

A Boolean value that specifies whether the capture device has a torch.

Declaration

@property(nonatomic, readonly) BOOL hasTorch;

Discussion

A torch is a light source, such as an LED flash, that is available on the device and used for illuminating captured content or providing general illumination. This property reflects whether the current device has such illumination hardware built-in.

Even if the device has a torch, that torch might not be available for use. Thus, you should also check the value of the torchAvailable property before using it.

You can observe changes to the value of this property using Key-value observing.

See Also

Managing Torch Settings

torchAvailable

Indicates whether the torch is currently available for use.

torchActive

A Boolean value indicating whether the device’s torch is currently active.

torchLevel

The current torch brightness level.

AVCaptureTorchMode

Constants to specify the capture device’s torch mode.

torchMode

The current torch mode.

- isTorchModeSupported:

Returns a Boolean value that indicates whether the device supports the specified torch mode.

- setTorchModeOnWithLevel:error:

Sets the illumination level when in torch mode.

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