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]