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<br><br><?xml version="1.0"
encoding="utf-8"?> <fx:Declarations> <!-- Place non-visual elements (e.g., services, value objects) here --> </fx:Declarations> <fx:Script> <![CDATA[ import
com.google.zxing.BarcodeFormat; import
com.google.zxing.BinaryBitmap; import
com.google.zxing.BufferedImageLuminanceSource; import
com.google.zxing.DecodeHintType; import
com.google.zxing.Result; import
com.google.zxing.client.result.ParsedResult; import
com.google.zxing.client.result.ResultParser; import
com.google.zxing.common.BitMatrix; import
com.google.zxing.common.ByteMatrix; import
com.google.zxing.common.GlobalHistogramBinarizer; import
com.google.zxing.common.flexdatatypes.HashTable; import
com.google.zxing.qrcode.QRCodeReader; import
com.google.zxing.qrcode.detector.Detector; import
spark.events.ViewNavigatorEvent; protected
var camera:Camera; private
var videoDisplay:Video=new
Video(360, 360); private
var qrReader:QRCodeReader; private
var bmd:BitmapData; private
var cameraStarted:Boolean = false; protected
function button1_clickHandler(event:MouseEvent):void { if
(!cameraStarted) { if
(Camera.isSupported) { camera=Camera.getCamera(); camera.setMode(360, 360, 24); videoDisplay.x = 360; sv.addChild(videoDisplay); videoDisplay.attachCamera(camera); videoDisplay.rotation=90; qrReader=new
QRCodeReader; btn.label = "Scan Now"; lbl.text = ""; cameraStarted = true; } else
{ lbl.text = "no camera found"; } } else
{ decodeSnapshot(); } } public function
decodeSnapshot():void { lbl.text="checking..."; bmd=new
BitmapData(300, 300); bmd.draw(videoDisplay, null, null, null, null, true); videoDisplay.cacheAsBitmap=true; videoDisplay.cacheAsBitmapMatrix=new
Matrix; decodeBitmapData(bmd, 300, 300); bmd.dispose(); bmd=null; System.gc(); } public function
decodeBitmapData(bmpd:BitmapData, width:int, height:int):void { var
lsource:BufferedImageLuminanceSource=new
BufferedImageLuminanceSource(bmpd); var
bitmap:BinaryBitmap=new
BinaryBitmap(new
GlobalHistogramBinarizer(lsource)); var
ht:HashTable=null; ht=this.getAllHints(); var
res:Result=null; try
{ res=qrReader.decode(bitmap, ht); } catch
(event:Error) { } if
(res == null) { videoDisplay.clear(); lbl.text="nothing decoded"; } else
{ var
parsedResult:ParsedResult=ResultParser.parseResult(res); lbl.text=parsedResult.getDisplayResult(); sv.removeChild(videoDisplay); cameraStarted = false; btn.label = "Start Camera"; } } public function
getAllHints():HashTable { var
ht:HashTable=new
HashTable; ht.Add(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE); return
ht; } ]]> </fx:Script> <s:VGroup width="100%"
horizontalAlign="center"
id="vg"> <s:SpriteVisualElement id="sv"
width="360"
height="400"/> <s:Label id="lbl"
text=""
/> <s:Button id="btn"
label="Start Camera"
width="220"
height="93"
click="button1_clickHandler(event)"/> </s:VGroup></s:View> |
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public function
decodeSnapshot():void{ lbl.text="checking..."; bmd=new
BitmapData(300, 300); bmd.draw(videoDisplay, null, null, null, null, true); videoDisplay.cacheAsBitmap=true; videoDisplay.cacheAsBitmapMatrix=new
Matrix; decodeBitmapData(bmd, 300, 300); bmd.dispose(); bmd=null; System.gc();} public function
decodeBitmapData(bmpd:BitmapData, width:int, height:int):void{ var
lsource:BufferedImageLuminanceSource=new
BufferedImageLuminanceSource(bmpd); var
bitmap:BinaryBitmap=new
BinaryBitmap(new
GlobalHistogramBinarizer(lsource)); var
ht:HashTable=null; ht=this.getAllHints(); var
res:Result=null; try
{ res=qrReader.decode(bitmap, ht); } catch
(event:Error) { } if
(res == null) { videoDisplay.clear(); lbl.text="nothing decoded"; } else
{ var
parsedResult:ParsedResult=ResultParser.parseResult(res); lbl.text=parsedResult.getDisplayResult(); sv.removeChild(videoDisplay); cameraStarted = false; btn.label = "Start Camera"; }} public function
getAllHints():HashTable{ var
ht:HashTable=new
HashTable; ht.Add(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE); return
ht;} |
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if
(Camera.isSupported){ camera=Camera.getCamera(); camera.setMode(360, 360, 24); videoDisplay.x = 360; sv.addChild(videoDisplay); videoDisplay.attachCamera(camera); videoDisplay.rotation=90; qrReader=new
QRCodeReader; btn.label = "Scan Now"; lbl.text = ""; cameraStarted = true;}else
{ lbl.text = "no camera found";} |
Adding a QR Code Reader in Flex on Android,布布扣,bubuko.com
Adding a QR Code Reader in Flex on Android
原文：http://www.cnblogs.com/ggzjj/p/3612850.html