com.microblink.blinkbarcode.fragment.overlay

Class BaseOverlayController

java.lang.Object

com.microblink.blinkbarcode.fragment.overlay.BaseOverlayController

All Implemented Interfaces:

ScanningOverlay, ScanResultListener

Direct Known Subclasses:

BasicOverlayController

public abstract class BaseOverlayController
extends java.lang.Object
implements ScanningOverlay

Field Summary

Fields

Modifier and Type	Field and Description
protected android.app.AlertDialog	errorDialog
protected android.os.Handler	handler
protected OverlayState	overlayState
protected RecognizerRunnerFragment	recognizerRunnerFragment
protected RecognizerRunnerView	recognizerRunnerView
protected ScanResultListener	scanResultListener
protected ScanSoundPlayer	scanSoundPlayer
protected TorchController	torchController

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BaseOverlayController(ScanResultListener scanResultListener)

Method Summary

Modifier and Type	Method and Description
protected abstract int	getBeepSoundResourceId()
protected android.content.Context	getContext()
protected abstract int	getSplashScreenLayoutId()
protected void	onCameraAutofocusFailed()
protected void	onFragmentConfigurationChanged(android.content.res.Configuration newConfig)
protected void	onFragmentCreated(android.os.Bundle savedInstanceState)
protected void	onFragmentDestroyed()
protected void	onFragmentPaused()
protected void	onFragmentResumed()
protected void	onFragmentSaveInstanceState(android.os.Bundle outState)
protected void	onFragmentStarted()
protected void	onFragmentStopped()
void	onFrameRecognitionDone(RecognitionSuccessType recognitionSuccessType) Called for each camera frame, after the recognition has been completed.
void	onRecognizerRunnerFragmentAttached(RecognizerRunnerFragment recognizerRunnerFragment, android.app.Activity activity) Called after RecognizerRunnerFragment gets attached to its host activity.
void	onRecognizerRunnerViewCreated(RecognizerRunnerFragment recognizerRunnerFragment) Called when RecognizerRunnerView has been created within given RecognizerRunnerFragment.
void	onUnrecoverableError(java.lang.Throwable throwable) This method is called when the scanning cannot be performed because of an error.
void	pauseScanning() If the RecognizerRunnerView has been created, pauses the scanning loop by calling RecognizerRunnerView.pauseScanning().
void	resumeScanning() If the RecognizerRunnerView has been created, resumes the scanning loop (that has been paused) by calling RecognizerRunnerView.resumeScanning(boolean) }.
protected void	setMeteringAreas()
protected abstract boolean	shouldResetStateOnRecognizerResume()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.microblink.blinkbarcode.view.recognition.ScanResultListener

onScanningDone

Field Detail

scanResultListener

@NonNull
protected ScanResultListener scanResultListener

overlayState

@NonNull
protected OverlayState overlayState

recognizerRunnerFragment

@Nullable
protected RecognizerRunnerFragment recognizerRunnerFragment

recognizerRunnerView

@Nullable
protected RecognizerRunnerView recognizerRunnerView

handler

@NonNull
protected android.os.Handler handler

errorDialog

@Nullable
protected android.app.AlertDialog errorDialog

scanSoundPlayer

@NonNull
protected ScanSoundPlayer scanSoundPlayer

torchController

@NonNull
protected TorchController torchController

Constructor Detail

BaseOverlayController

protected BaseOverlayController(@NonNull
                                ScanResultListener scanResultListener)

Method Detail

onRecognizerRunnerViewCreated

@CallSuper
public void onRecognizerRunnerViewCreated(@NonNull
                                                     RecognizerRunnerFragment recognizerRunnerFragment)

Description copied from interface: ScanningOverlay

Called when RecognizerRunnerView has been created within given RecognizerRunnerFragment. You can use RecognizerRunnerFragment.getRecognizerRunnerView() to get the created RecognizerRunnerView and configure it. The most important thing you should do in this method is to set RecognizerBundle to created RecognizerRunnerView using RecognizerRunnerView.setRecognizerBundle(RecognizerBundle). You can also register various callbacks to RecognizerRunnerView, except CameraEventsListener (using BaseCameraView.setCameraEventsListener(CameraEventsListener)) and ScanResultListener (using RecognizerRunnerView.setScanResultListener(ScanResultListener) - those two listeners will be set to RecognizerRunnerView within RecognizerRunnerFragment after calling this method - if you need to observe camera events within RecognizerRunnerFragment, you can set your own BaseCameraEventsListener to it with RecognizerRunnerFragment.setCameraEventsListener(BaseCameraEventsListener). In this method, you can also access RecognizerRunnerFragment's content layout with method RecognizerRunnerFragment.getContentLayout() and add your views to it.

Specified by:

onRecognizerRunnerViewCreated in interface ScanningOverlay

Parameters:

recognizerRunnerFragment - RecognizerRunnerFragment within which RecognizerRunnerView has been created.

resumeScanning

@AnyThread
public void resumeScanning()

Description copied from interface: ScanningOverlay

If the RecognizerRunnerView has been created, resumes the scanning loop (that has been paused) by calling RecognizerRunnerView.resumeScanning(boolean) }.

If the RecognizerRunnerView has not been created yet, does nothing.

Specified by:

resumeScanning in interface ScanningOverlay

See Also:

RecognizerRunnerView.resumeScanning(boolean)

shouldResetStateOnRecognizerResume

protected abstract boolean shouldResetStateOnRecognizerResume()

pauseScanning

@AnyThread
public void pauseScanning()

Description copied from interface: ScanningOverlay

If the RecognizerRunnerView has been created, pauses the scanning loop by calling RecognizerRunnerView.pauseScanning(). But keeps camera active. If the RecognizerRunnerView has not been created yet, does nothing.

You can resume scanning by calling ScanningOverlay.resumeScanning().

Specified by:

pauseScanning in interface ScanningOverlay

See Also:

RecognizerRunnerView.pauseScanning()

getBeepSoundResourceId

protected abstract int getBeepSoundResourceId()

onRecognizerRunnerFragmentAttached

@CallSuper
public void onRecognizerRunnerFragmentAttached(@NonNull
                                                          RecognizerRunnerFragment recognizerRunnerFragment,
                                                          @NonNull
                                                          android.app.Activity activity)

Description copied from interface: ScanningOverlay

Called after RecognizerRunnerFragment gets attached to its host activity. This happens before RecognizerRunnerFragment.onCreateView(LayoutInflater, ViewGroup, Bundle) which internally invokes ScanningOverlay.onRecognizerRunnerViewCreated(RecognizerRunnerFragment). This means that at the time this method is invoked, methods like RecognizerRunnerFragment.getRecognizerRunnerView() or RecognizerRunnerFragment.getContentLayout() will return null. However, this is a good place to register your LifecycleObserver with RecognizerRunnerFragment.registerLifecycleObserver(LifecycleObserver) if your overlay needs to be notified about lifecycle events of RecognizerRunnerFragment.

Specified by:

onRecognizerRunnerFragmentAttached in interface ScanningOverlay

Parameters:

recognizerRunnerFragment - RecognizerRunnerFragment that has been attached to host activity.

activity - Activity to which RecognizerRunnerFragment has been attached.

getContext

@NonNull
protected android.content.Context getContext()

getSplashScreenLayoutId

@LayoutRes
protected abstract int getSplashScreenLayoutId()

setMeteringAreas

protected void setMeteringAreas()

onFragmentCreated

protected void onFragmentCreated(@Nullable
                                 android.os.Bundle savedInstanceState)

onFragmentStarted

protected void onFragmentStarted()

onFragmentResumed

protected void onFragmentResumed()

onFragmentPaused

protected void onFragmentPaused()

onFragmentStopped

protected void onFragmentStopped()

onFragmentDestroyed

protected void onFragmentDestroyed()

onFragmentConfigurationChanged

protected void onFragmentConfigurationChanged(@NonNull
                                              android.content.res.Configuration newConfig)

onFragmentSaveInstanceState

protected void onFragmentSaveInstanceState(@Nullable
                                           android.os.Bundle outState)

onCameraAutofocusFailed

protected void onCameraAutofocusFailed()

onUnrecoverableError

public void onUnrecoverableError(@NonNull
                                 java.lang.Throwable throwable)

Description copied from interface: ScanResultListener

This method is called when the scanning cannot be performed because of an error.

Specified by:

onUnrecoverableError in interface ScanResultListener

Parameters:

throwable - type of error

onFrameRecognitionDone

public void onFrameRecognitionDone(RecognitionSuccessType recognitionSuccessType)

Description copied from interface: ScanningOverlay

Called for each camera frame, after the recognition has been completed.

Specified by:

onFrameRecognitionDone in interface ScanningOverlay

Parameters:

recognitionSuccessType - frame recognition status.