```
@RequiresApi(value = Build.VERSION_CODES.LOLLIPOP) 
public interface ActionHolder

                    
```
The holder of Action. This class should keep a list or set of currently running actions, and offers to them the base Camera2 objects that are needed to apply changes. This class, or an holder of it, should also forward the capture callbacks to all Actions. See com.otaliastudios.cameraview.engine.Camera2Engine for our implementation.

Method Summary

Modifier and Type	Method	Description
`abstract void`	`addAction(@NonNull() Action action)`	Adds a new action
`abstract void`	`removeAction(@NonNull() Action action)`	Removes a previously added action
`abstract CameraCharacteristics`	`getCharacteristics(@NonNull() Action action)`	Returns the CameraCharacteristics of the currentcamera device.
`abstract TotalCaptureResult`	`getLastResult(@NonNull() Action action)`	Returns the latest TotalCaptureResult.
`abstract CaptureRequest.Builder`	`getBuilder(@NonNull() Action action)`	Returns the current CaptureRequest.Builder so thatactions can apply changes to it and later submit them.
`abstract void`	`applyBuilder(@NonNull() Action source)`	Applies the current builder (as per getBuilder)as a repeating request on the preview.
`abstract void`	`applyBuilder(@NonNull() Action source, @NonNull() CaptureRequest.Builder builder)`	Applies the given builder as a single capture request.Callers can catch the exception and choose what to do.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - addAction
```
 abstract void addAction(@NonNull() Action action)
```
    Adds a new action
    
    Parameters:
    
    action - action
  - removeAction
```
 abstract void removeAction(@NonNull() Action action)
```
    Removes a previously added action
    
    Parameters:
    
    action - action
  - getCharacteristics
```
@NonNull() abstract CameraCharacteristics getCharacteristics(@NonNull() Action action)
```
    Returns the CameraCharacteristics of the currentcamera device.
    
    Parameters:
    
    action - action
  - getLastResult
```
@Nullable() abstract TotalCaptureResult getLastResult(@NonNull() Action action)
```
    Returns the latest TotalCaptureResult. Can be usedby actions to start querying the state before receiving theirfirst frame.
    
    Parameters:
    
    action - action
  - getBuilder
```
@NonNull() abstract CaptureRequest.Builder getBuilder(@NonNull() Action action)
```
    Returns the current CaptureRequest.Builder so thatactions can apply changes to it and later submit them.
    
    Parameters:
    
    action - action
  - applyBuilder
```
 abstract void applyBuilder(@NonNull() Action source)
```
    Applies the current builder (as per getBuilder)as a repeating request on the preview.
    
    Parameters:
    
    source - action
  - applyBuilder
```
 abstract void applyBuilder(@NonNull() Action source, @NonNull() CaptureRequest.Builder builder)
```
    Applies the given builder as a single capture request.Callers can catch the exception and choose what to do.
    
    Parameters:
    
    source - action
    
    builder - builder

Interface ActionHolder

Method Summary

Methods inherited from class java.lang.Object

Method Detail

addAction

removeAction

getCharacteristics

getLastResult

getBuilder

applyBuilder

applyBuilder