PIPでjava.lang.IllegalStateExceptionが発生する問題対応

ABVJE_UI_Android/src/jp/agentec/abook/abv/ui/home/activity/ChatWebViewActivity.java

@@ -1324,9 +1324,11 @@ public class ChatWebViewActivity extends CommunicationWebViewActivity implements
      * PIPモードに変更
      */
     public void startPIPMode() {
-        PictureInPictureParams.Builder mPipBuilder = new PictureInPictureParams.Builder();
-        enterPictureInPictureMode(mPipBuilder.build());
-        startPIP = true;
+        if (!startPIP) {
+            PictureInPictureParams.Builder mPipBuilder = new PictureInPictureParams.Builder();
+            enterPictureInPictureMode(mPipBuilder.build());
+            startPIP = true;
+        }
     }
 
     public void exitPIPmode() {