ZoomSuggestionOptions.Builder

AI-generated Key Takeaways

• ZoomSuggestionOptions.Builder helps create ZoomSuggestionOptions instances for controlling camera zoom during barcode scanning.

• It requires a ZoomSuggestionOptions.ZoomCallback in its constructor to handle zoom actions.

• Developers can set the maximum supported zoom ratio using setMaxSupportedZoomRatio() to ensure compatibility with different camera implementations.

• The build() method finally creates a ZoomSuggestionOptions object based on the provided configurations.

public static class ZoomSuggestionOptions.Builder extends Object

Builder to build out a ZoomSuggestionOptions.

Public Constructor Summary

Builder(ZoomSuggestionOptions.ZoomCallback zoomCallback) Builder for ZoomSuggestionOptions.

Public Method Summary

ZoomSuggestionOptions	build() Builds a ZoomSuggestionOptions instance.
ZoomSuggestionOptions.Builder	setMaxSupportedZoomRatio(float maxSupportedZoomRatio) Sets the max supported zoom ratio.

Inherited Method Summary

From class java.lang.Object

Object	clone()
boolean	equals(Object arg0)
void	finalize()
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

Public Constructors

public Builder (ZoomSuggestionOptions.ZoomCallback zoomCallback)

Builder for ZoomSuggestionOptions.

Parameters

zoomCallback	The ZoomSuggestionOptions.ZoomCallback to zoom the camera.

Public Methods

public ZoomSuggestionOptions build ()

Builds a ZoomSuggestionOptions instance.

public ZoomSuggestionOptions.Builder setMaxSupportedZoomRatio (float maxSupportedZoomRatio)

Sets the max supported zoom ratio.

Different camera libraries have different ways to fetch the max supported zoom ratio.

• Camera1: camera.getZoomRatios(camera.getMaxZoom())
• Camera2: characteristics.get(CameraCharacteristics.SCALER_AVAILABLE_MAX_DIGITAL_ZOOM)
• CameraX: camera.getCameraInfo().getZoomState().getValue().getMaxZoomRatio()

If unset, then the library may produce an unbounded zoom ratio.

Parameters

maxSupportedZoomRatio	the max supported zoom ratio fetched from camera.

Returns

• this object, for chaining method calls.