Bug #42869 pdfプレビュー画面で画面を回転させると、スライドが行われているように見える

ABVJE_UI_Android/src/jp/agentec/abook/abv/ui/viewer/activity/ContentViewActivity.java

@@ -625,6 +625,7 @@ public class ContentViewActivity extends ABVContentViewActivity {
         mPageScrollView = new PageScrollView(getApplicationContext());
 		mPageScrollView.setHorizontalScrollBarEnabled(false); // ScrollBarを非表示
         mPageScrollView.addView(mContentWrapLayout, new ViewGroup.LayoutParams(mAllPageCount * mDisplaySize.width, FP));
+        mPageScrollView.setBackgroundColor(Color.BLACK);
 
 		RelativeLayout.LayoutParams param0 = createParam(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
         param0.addRule(RelativeLayout.CENTER_IN_PARENT);