diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
index 2896e5f..05da37c 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
@@ -53,13 +53,14 @@
     protected void onResume() {
         super.onResume();
         paintViewModel.start();
+        paintCanvas.clearCanvas();
     }
 
     //-----------------------------------------------------------------
     @Override
     protected void onPause() {
         super.onPause();
-        paintViewModel.stop();
+//        paintViewModel.stop();
     }
 
     //-----------------------------------------------------------------
@@ -85,7 +86,6 @@
         paintOnionCanvas = findViewById(R.id.paintOnionCanvas);
         paintOnionCanvas.init(paintViewModel);
 
-
         paintToolBar = new PaintToolBar(this, paintCanvas, paintOnionCanvas);
     }
 
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintCanvas.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintCanvas.java
index 4304e5b..81ae629 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintCanvas.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintCanvas.java
@@ -101,7 +101,6 @@
         for (int i = 0; i < paths.size(); i++) {
             try {
                 canvas.drawPath(paths.get(i), paints.get(i));
-                curCanvas.drawPath(paths.get(i), paints.get(i));
             } catch (IndexOutOfBoundsException ex) {
             }
         }
@@ -109,7 +108,6 @@
         for (int i = 0; i < clonePaths.size(); i++) {
             try {
                 canvas.drawPath(clonePaths.get(i), clonePaints.get(i));
-                curCanvas.drawPath(clonePaths.get(i), clonePaints.get(i));
             } catch (IndexOutOfBoundsException ex) {
             }
         }
@@ -216,6 +214,14 @@
     //-----------------------------------------------------------------
     @RequiresApi(api = Build.VERSION_CODES.O)
     public void canvassc() {
+
+        for (int i = 0; i < clonePaths.size(); i++) {
+            try {
+                curCanvas.drawPath(clonePaths.get(i), clonePaints.get(i));
+            } catch (IndexOutOfBoundsException ex) {
+            }
+        }
+
         ByteArrayOutputStream stream = new ByteArrayOutputStream();
         image.compress(Bitmap.CompressFormat.PNG, 100, stream);
         byte[] byteArray = stream.toByteArray();
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintOnionCanvas.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintOnionCanvas.java
index 77ff9ed..e5fd319 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintOnionCanvas.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintOnionCanvas.java
@@ -81,6 +81,12 @@
         path.reset();
         invalidate();
     }
+
+    //-----------------------------------------------------------------
+    //
+    public void stopUpdate(){
+        paintViewModel.stop();
+    }
     //-----------------------------------------------------------------
 
 }
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintToolBar.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintToolBar.java
index 12795e5..083b05b 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintToolBar.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintToolBar.java
@@ -58,6 +58,8 @@
 
                     //-----------------------------------------------------------------
                     case R.id.navigation_page:
+
+                        paintOnionCanvas.stopUpdate();
                         paintOnionCanvas.clearCanvas();
 
                         paintCanvas.canvassc();
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageConnectionModel.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageConnectionModel.java
index 8b5c4d3..5a71ede 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageConnectionModel.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageConnectionModel.java
@@ -108,28 +108,43 @@
 
         Call<Page> call = pagesRest.getPage(acanthus.getAid(), acanthus.getEditingPageNo());
 
-        try {
-            Response<Page> response = call.execute();
-            // ページ番号とページIDを取得する
-            acanthus.setEditingPageId(response.body().getPid());
-            mPageId.setValue(response.body().getPid());
-
-            Log.d("curPageNo", acanthus.getEditingPageNo().toString());
-            Log.d("curPageID", acanthus.getEditingPageId().toString());
-        } catch (Exception ex) {
-        }
 
         call.enqueue(new Callback<Page>() {
             @Override
             public void onResponse(Call<Page> call, Response<Page> response) {
                 if (response.isSuccessful()) {
 
+                    //-----------------------------------------------------------------
                     // ページ番号とページIDを取得する
                     acanthus.setEditingPageId(response.body().getPid());
                     mPageId.setValue(response.body().getPid());
 
                     Log.d("curPageNo", acanthus.getEditingPageNo().toString());
                     Log.d("curPageID", acanthus.getEditingPageId().toString());
+
+                    //-----------------------------------------------------------------
+                    // ページが後ろにあれば取得
+                    if (1 < acanthus.getEditingPageNo()) {
+                        final PagesRest pagesRest = retrofit.create(PagesRest.class);
+
+                        Call<Page> call2 = pagesRest.getPage(acanthus.getAid(), acanthus.getEditingPageNo() - 1);
+
+                        call2.enqueue(new Callback<Page>() {
+                            @Override
+                            public void onResponse(Call<Page> call2, Response<Page> response) {
+
+                                if (response.isSuccessful()) {
+                                    acanthus.setPrePageId(response.body().getPid());
+                                    Log.d("prePageID", acanthus.getPrePageId().toString());
+                                }
+                            }
+
+                            @Override
+                            public void onFailure(Call<Page> call, Throwable t) {
+                            }
+                        });
+                        //-----------------------------------------------------------------
+                    }
                 }
             }
 
@@ -161,21 +176,14 @@
 
     //-----------------------------------------------------------------
     // 前のページのIDを取得する
-    public void getPrePageId() {
-
-        // ページが後ろにあれば取得
-        if (1 < acanthus.getEditingPageNo()) {
-            final PagesRest pagesRest = retrofit.create(PagesRest.class);
-
-            Call<Page> call = pagesRest.getPage(acanthus.getAid(), acanthus.getEditingPageNo() - 1);
-
-            try {
-                Response<Page> response = call.execute();
-                acanthus.setPrePageId(response.body().getPid());
-            } catch (Exception ex) {
-            }
-
-
+//    public void getPrePageId() {
+//
+//        // ページが後ろにあれば取得
+//        if (1 < acanthus.getEditingPageNo()) {
+//            final PagesRest pagesRest = retrofit.create(PagesRest.class);
+//
+//            Call<Page> call = pagesRest.getPage(acanthus.getAid(), acanthus.getEditingPageNo() - 1);
+//
 //            call.enqueue(new Callback<Page>() {
 //                @Override
 //                public void onResponse(Call<Page> call, Response<Page> response) {
@@ -190,9 +198,9 @@
 //                public void onFailure(Call<Page> call, Throwable t) {
 //                }
 //            });
-
-        }
-    }
+//
+//        }
+//    }
 
 //-----------------------------------------------------------------
 }
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageOperationModel.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageOperationModel.java
index 026450e..6dd7ef8 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageOperationModel.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PageOperationModel.java
@@ -70,7 +70,7 @@
         Integer editingNo = acanthus.getEditingPageNo();
 
         if (1 < editingNo) {
-            acanthus.setEditingPageNo(acanthus.getEditingPageNo() - 1);
+            acanthus.setEditingPageNo(editingNo - 1);
             mPageNo.setValue(acanthus.getEditingPageNo());
         }
     }
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageViewModel.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageViewModel.java
index d9b2f3c..75d4ae7 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageViewModel.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageViewModel.java
@@ -91,7 +91,7 @@
     // ひとつ前のページを記憶する
     private void updatePrePageId(){
         PageConnectionModel pageConnectionModel = paintModelContainer.getPageConnectionModel();
-        pageConnectionModel.getPrePageId();
+//        pageConnectionModel.getPrePageId();
     }
 
     //-----------------------------------------------------------------