新增网格样式的扫描激光（类似支付宝扫码样式）

lib/src/main/java/com/king/zxing/util/CodeUtils.java

@@ -161,7 +161,7 @@ public class CodeUtils {
             canvas.drawBitmap(src, 0, 0, null);
             canvas.scale(scaleFactor, scaleFactor, srcWidth / 2, srcHeight / 2);
             canvas.drawBitmap(logo, (srcWidth - logoWidth) / 2, (srcHeight - logoHeight) / 2, null);
-            canvas.save(Canvas.ALL_SAVE_FLAG);
+            canvas.save();
             canvas.restore();
         } catch (Exception e) {
             bitmap = null;
@@ -439,7 +439,7 @@ public class CodeUtils {
             paint.setColor(textColor);
             paint.setTextAlign(Paint.Align.CENTER);
             canvas.drawText(code,srcWidth/2,srcHeight + textSize /2 + offset,paint);
-            canvas.save(Canvas.ALL_SAVE_FLAG);
+            canvas.save();
             canvas.restore();
         } catch (Exception e) {
             bitmap = null;