Android 长按识别图中二维码 zxing

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#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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