Scan with zxing class library under Android

Program source code and executable file: Http://files.cnblogs.com/rainboy2010/zxingdemo.zip

Zxing, an extremely powerful bar code parsing class Library, the following explains how to use the Zxing class library to implement sweep sweep function, first put on a:

The main code is as follows:

1. Get the preview image in the Onpreviewframe method and pass it to Decodehandler to parse

public void Onpreviewframe (byte[] data, camera camera)   {point    cameraresolution = Configmanager.getcameraresolution ();    if (!useoneshotpreviewcallback)     {      camera.setpreviewcallback (null);    }    if (Previewhandler! = null)     {      Message message = Previewhandler.obtainmessage (Previewmessage, CAMERARESOLUTION.X,CAMERARESOLUTION.Y, data);      Message.sendtotarget ();      Previewhandler = null;    }     else     {      log.d (TAG, "Got preview callback, but no handler for it");    }  }

2. Call the Zxing class library in the Decode method to parse the image

private void Decode (byte[] data, int width, int height) {Long start = System.currenttimemillis ();        Result rawresult = null;    byte[] Rotateddata = new Byte[data.length];  for (int y = 0, y < height; y++) {for (int x = 0; x < width; x + +) rotateddata[x * height + height    -Y-1] = data[x + y * Width]; } int tmp = width;    Here we is swapping, that's the difference to #11 width = height;        height = tmp;    Planaryuvluminancesource Source = Cameramanager.get (). Buildluminancesource (rotateddata, width, height);    Binarybitmap bitmap = new Binarybitmap (new Hybridbinarizer (source));    try {rawresult = multiformatreader.decodewithstate (bitmap);    } catch (Readerexception re) {//Continue} finally {Multiformatreader.reset ();      } if (Rawresult! = null) {Long end = System.currenttimemillis ();      LOG.D (TAG, "Found Barcode (" + (End-start) + "ms): \ n" + rawresult.tostring ()); Message message =Message.obtain (Activity.gethandler (), r.id.decode_succeeded, Rawresult);      LOG.D (TAG, "Sending decode succeeded message ...");    Message.sendtotarget ();      } else {Message message = Message.obtain (Activity.gethandler (), r.id.decode_failed);    Message.sendtotarget (); }  }

Scan with zxing class library under Android