Android 长按识别图中二维码 zxing

#基于 Zxing, 初学Android  代码质量不高//长按，通过zxing读取图片，判断是否有二维码
bigImage.setOnLongClickListener(new View.OnLongClickListener() {  @Override  public boolean onLongClick(View viewm) {  Bitmap obmp = ((BitmapDrawable) (bigImage).getDrawable()).getBitmap();  int width = obmp.getWidth();  int height = obmp.getHeight();  int[] data = new int[width * height];  obmp.getPixels(data, 0, width, 0, 0, width, height);  RGBLuminanceSource source = new RGBLuminanceSource(width, height, data);  BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));  QRCodeReader reader = new QRCodeReader();  Result re = null;  try {  re = reader.decode(bitmap1);  } catch (NotFoundException e) {  e.printStackTrace();  } catch (ChecksumException e) {  e.printStackTrace();  } catch (FormatException e) {  e.printStackTrace();  }  if (re == null) {  showAlert(obmp);  } else {  showSelectAlert(obmp, re.getText());  }  return false;  }  });  private void showAlert(final Bitmap bitmap) {  AlertDialog.Builder builder = new AlertDialog.Builder(this);  builder.setMessage("保存图片")  .setCancelable(false)  .setPositiveButton("确定", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialogInterfacem, int i) {  saveImageToGallery(bitmap);  }  })  .setNegativeButton("取消", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialogInterfacem, int i) {  }  });  builder.show();  
}  private void showSelectAlert(final Bitmap bitmap, final String url) {  AlertDialog.Builder builder = new AlertDialog.Builder(this);  builder.setTitle("请选择");  String str[] = {"保存图片", "扫二维码"};  builder.setItems(str, new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialogInterfacem, int i) {  switch (i) {  case 0: {  saveImageToGallery(bitmap);  }  break;  case 1: {  Intent n = new Intent(EnlargeimagevActivity.this, DetailActivity.class);  n.putExtra(DetailActivity.BUNDLE_KEY_DISPLAY_TYPE, DetailActivity.WEBVIEW_DETAIL);  n.putExtra(DetailwebFragment.WEB_URL, url);  startActivity(n);  }  break;  }  }  });  builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialogInterfacem, int i) {  }  });  builder.show();  
}

zxing 下载  http://download.csdn.net/detail/eric19920720/9709305

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