com.scvngr.levelup.core.ui.view

Class AsyncTaskCodeLoader

java.lang.Object

com.scvngr.levelup.core.ui.view.LevelUpCodeLoader

com.scvngr.levelup.core.ui.view.AsyncTaskCodeLoader

All Implemented Interfaces:

PendingImage.LoadCancelable

@LevelUpApi(contract=PUBLIC)
public final class AsyncTaskCodeLoader
extends LevelUpCodeLoader

Loads and caches LevelUpQrCodeGenerator.LevelUpQrCodeImages using AsyncTasks.

Constructor Summary

Constructors

Constructor and Description
AsyncTaskCodeLoader(LevelUpQrCodeGenerator qrCodeGenerator, LevelUpCodeCache codeCache)

Method Summary

Modifier and Type	Method and Description
protected void	onCancelLoad(String loadKey) Implement this to handle any load cancellation.
void	onCancelLoads() Cancel all loads.
protected void	onStartLoadInBackground(String qrCodeContents, String key, PendingImage.OnImageLoaded<LevelUpQrCodeGenerator.LevelUpQrCodeImage> onImageLoaded) Implement this to start the loading of the given QR code into an image in the background.

Methods inherited from class com.scvngr.levelup.core.ui.view.LevelUpCodeLoader

cancelLoad, cancelLoads, dispatchOnImageLoaded, generateQrCode, getCodeCache, getKey, getLevelUpCode, getQrCodeGenerator, loadLevelUpCode, registerOnImageLoadedCallback, startLoadInBackground, unregisterOnImageLoadedCallback

Methods inherited from class java.lang.Object

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

Constructor Detail

AsyncTaskCodeLoader

public AsyncTaskCodeLoader(LevelUpQrCodeGenerator qrCodeGenerator,
                           LevelUpCodeCache codeCache)

Parameters:

qrCodeGenerator - the LevelUpQrCodeGenerator used in this loader.

codeCache - the LevelUpCodeCache to store the generated QR codes.

Method Detail

onCancelLoads

public void onCancelLoads()

Description copied from class: LevelUpCodeLoader

Cancel all loads. Implement this to stop any pending loads.

Specified by:

onCancelLoads in class LevelUpCodeLoader

onCancelLoad

protected void onCancelLoad(String loadKey)

Description copied from class: LevelUpCodeLoader

Implement this to handle any load cancellation.

Specified by:

onCancelLoad in class LevelUpCodeLoader

Parameters:

loadKey - the key under which the QR code is tracked.

onStartLoadInBackground

protected void onStartLoadInBackground(String qrCodeContents,
                                       String key,
                                       PendingImage.OnImageLoaded<LevelUpQrCodeGenerator.LevelUpQrCodeImage> onImageLoaded)

Description copied from class: LevelUpCodeLoader

Implement this to start the loading of the given QR code into an image in the background. If an existing request for the same content has been made, the second request will be dropped unless the previous request has been cancelled. This must be called on the main thread.

Subclasses shouldn't call this method directly, instead call LevelUpCodeLoader.startLoadInBackground(String, String, com.scvngr.levelup.core.ui.view.PendingImage.OnImageLoaded) )}.

Specified by:

onStartLoadInBackground in class LevelUpCodeLoader

Parameters:

qrCodeContents - the contents to render into a QR code.

key - the key under which the QR code is tracked.

onImageLoaded - called when the image has been loaded.