43113追加対応。

ABVJE_UI_Android/src/jp/agentec/abook/abv/ui/home/view/FullscreenableChromeClient.java

@@ -54,6 +54,7 @@ public class FullscreenableChromeClient extends WebChromeClient {
         this.onShowCustomView(view, callback);
     }
 
+
     @Override
     public void onHideCustomView() {
         if (mCustomView == null) {
@@ -76,7 +77,11 @@ public class FullscreenableChromeClient extends WebChromeClient {
         WindowManager.LayoutParams winParams = win.getAttributes();
         final int bits = WindowManager.LayoutParams.FLAG_FULLSCREEN;
         if (enabled) {
-            win.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+            win.getDecorView().setSystemUiVisibility((View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+                    | View.SYSTEM_UI_FLAG_FULLSCREEN
+                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                    | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN));
             winParams.flags |= bits;
         } else {
             winParams.flags &= ~bits;