diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
deleted file mode 100644
index 797acea..0000000
--- a/.idea/runConfigurations.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 78c8159..160c466 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -32,6 +32,7 @@
         <activity android:name=".views.sign_up.SignUpActivity"></activity>
         <activity android:name=".views.paint.InviteActivity"></activity>
         <activity android:name=".views.paint.PaintActivity"></activity>
+        <activity android:name=".views.paint.page.PageActivity"></activity>
         <activity android:name=".views.login.LoginScreenActivity" />
         <activity
             android:name=".views.MainActivity"
diff --git a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
index b9c2bf2..6fab8ba 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
@@ -23,7 +23,8 @@
     private String preferenceToken;
     //-----------------------------------------------------------------
     private Integer aid;
-    private Integer editingPageNo = 0;
+    private Integer editingPageNo = 1;
+    private Integer editingPageId = 0;
     private Animation currentAnimation;
     private Collection<AnimationJson> animationJsonList = new ArrayList<>();
 
@@ -78,10 +79,14 @@
     }
 
     public Integer getEditingPageNo() {
-        if (editingPageNo == null) editingPageNo = 0;
+        if (editingPageNo == null) editingPageNo = 1;
         return editingPageNo;
     }
 
+    public Integer getEditingPageId() {
+        return this.editingPageId;
+    }
+
     public Animation getCurrentAnimation() {
         return currentAnimation;
     }
@@ -143,6 +148,10 @@
         this.currentAnimation = currentAnimation;
     }
 
+    public void setEditingPageId(Integer editingPageId) {
+        this.editingPageId = editingPageId;
+    }
+
     //HomeViewModelでしようするためのsetter
     public void setAnimationJsonList(Collection<AnimationJson> sentAnimationJsonList) {
         this.animationJsonList.clear();
diff --git a/app/src/main/java/org/ntlab/acanthus_client/entities/Page.java b/app/src/main/java/org/ntlab/acanthus_client/entities/Page.java
index 10340b0..cc25367 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/entities/Page.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/entities/Page.java
@@ -5,14 +5,29 @@
 //-----------------------------------------------------------------
 // ページ情報
 public class Page {
+    private Integer pid;
+    private Integer pageNo;
     private ArrayList<Layer> layers = new ArrayList<>();
 
+    //-----------------------------------------------------------------
+    // getter
+    public Integer getPid() {
+        return pid;
+    }
+
+    public Integer getPageNo() {
+        return pageNo;
+    }
+
     public ArrayList<Layer> getLayers() {
         return this.layers;
     }
 
+    //-----------------------------------------------------------------
+    // setter
     public void setLayers(ArrayList<Layer> layers) {
         this.layers = layers;
     }
+
 }
 
diff --git a/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/PagesRest.java b/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/PagesRest.java
index 816392f..7c577d5 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/PagesRest.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/PagesRest.java
@@ -28,8 +28,13 @@
 
     //-----------------------------------------------------------------
     //
-    @DELETE("gallery/{aid}/pageMap/{pid}")
-    Call<Integer> deletePage(@Path("aid") Integer aid, @Path("pid") Integer pid);
+    @DELETE("gallery/{aid}/pageMap/{pageNo}")
+    Call<Integer> deletePage(@Path("aid") Integer aid, @Path("pageNo") Integer pageNo);
+
+    //-----------------------------------------------------------------
+    //
+    @GET("gallery/{aid}/pageMap/{pageNo}")
+    Call<Page> getPage(@Path("aid") Integer aid, @Path("pageNo") Integer pageNo);
 
     //-----------------------------------------------------------------
     //
diff --git a/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/StrokesRest.java b/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/StrokesRest.java
index 11f7b1a..0f7a43f 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/StrokesRest.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/resources/gallery/StrokesRest.java
@@ -43,21 +43,23 @@
     //-----------------------------------------------------------------
     //
     @FormUrlEncoded
-    @POST("gallery/{aid}/pageMap/0/layers/0/strokes/{strokeNo}/positions")
-    Call<Integer> addPositions(@Field("positionNo") int i,@Path("aid") Integer aid, @Path("strokeNo") Integer strokeNo,
+    @POST("gallery/{aid}/pageMap/{pid}/layers/0/strokes/{strokeNo}/positions")
+    Call<Integer> addPositions(@Field("positionNo") int i, @Path("aid") Integer aid,
+                               @Path("pid") int pid, @Path("strokeNo") Integer strokeNo,
                                @Field("x") double x, @Field("y") double y);
 
     //-----------------------------------------------------------------
     //
-    @DELETE("gallery/{aid}/pageMap/0/layers/0/strokes")
-    Call<String> deleteStrokes(@Path("aid") Integer aid, @Query("uid") Integer uid);
+    @DELETE("gallery/{aid}/pageMap/{pid}/layers/0/strokes")
+    Call<String> deleteStrokes(@Path("aid") Integer aid, @Path("pid") Integer pid, @Query("uid") Integer uid);
 
     //-----------------------------------------------------------------
     //
     @DELETE("gallery/{aid}/pageMap/0/layers/0/strokes/{strokeNo}/positions")
     Call<String> deleteStrokeNo(@Path("aid") Integer aid, @Path("strokeNo") Integer strokeNo);
+
     //-----------------------------------------------------------------
     //
     @GET("gallery/{aid}/pageMap/{pid}/image")
-    Call<String> getLayers(@Path("aid") Integer aid, @Path("pid")Integer pid);
+    Call<String> getLayers(@Path("aid") Integer aid, @Path("pid") Integer pid);
 }
\ No newline at end of file
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintViewModel.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintViewModel.java
index 18ed989..2f174ce 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintViewModel.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintViewModel.java
@@ -24,36 +24,31 @@
 
     private PaintModelContainer paintModelContainer;
 
-    private MutableLiveData<Integer> mPageLength = new MutableLiveData<>();
     private MutableLiveData<Integer> mCurPageNo = new MutableLiveData<>();
+    private MutableLiveData<Integer> mCurPageId = new MutableLiveData<>();
     private MutableLiveData<Integer> mPageSize = new MutableLiveData<>();
     private MutableLiveData<Integer> mStrokeNo = new MutableLiveData<>();
+
     private MutableLiveData<Collection<Stroke>> mStrokes = new MutableLiveData<>();
 
     private ScheduledThreadPoolExecutor thread = new ScheduledThreadPoolExecutor(1);
-    private ArrayList<Double>positionLocalx = new ArrayList<>();
-    private ArrayList<Double>positionLocaly = new ArrayList<>();
-    private ArrayList<Integer>localstrokeNo = new ArrayList<>();
-    private int cnt=0;
-    private float fsx=0;
-    private float fsy=0;
+    private ArrayList<Double> positionLocalx = new ArrayList<>();
+    private ArrayList<Double> positionLocaly = new ArrayList<>();
+    private ArrayList<Integer> localstrokeNo = new ArrayList<>();
+    private int cnt = 0;
+    private float fsx = 0;
+    private float fsy = 0;
+
     //-----------------------------------------------------------------
     // getter
     public MutableLiveData<Collection<Stroke>> getStroke() {
         return this.mStrokes;
     }
-    public void deleteStroke() {
-        this.mStrokes.getValue().clear();
-    }
 
     public LiveData<Integer> getStrokeNo() {
         return this.mStrokeNo;
     }
 
-    public LiveData<Integer> getPageLength() {
-        return this.mPageLength;
-    }
-
     public LiveData<Integer> getPageNo() {
         return this.mCurPageNo;
     }
@@ -73,6 +68,8 @@
         mStrokes.setValue(new ArrayList<>());
         mStrokes.getValue().add(new Stroke());
 
+        // ページの情報初期化
+        paintModelContainer.getPageConnectionModel().getPage(mCurPageId);
         paintModelContainer.getPageConnectionModel().getPageSize(mPageSize);
 
         thread.scheduleWithFixedDelay(this, 1000L, 100L, TimeUnit.MILLISECONDS);
@@ -80,22 +77,24 @@
 
     //-----------------------------------------------------------------
     // 描画APIの通信リクエスト
-    public void addLocalStrokeRequest(float x,float y) {
+    public void addLocalStrokeRequest(float x, float y) {
         paintModelContainer.getPaintConnectionModel().addLocalStroke(mStrokeNo);
-        fsx=x;
-        fsy=y;
-        cnt=1;
+        fsx = x;
+        fsy = y;
+        cnt = 1;
     }
+
     public void addPositionRequest(float x, float y) {
 //        Log.d("mStrokeNo", mStrokeNo.getValue().toString());
-                paintModelContainer.getPaintConnectionModel().addPosition(cnt,x,y,mStrokeNo.getValue());
-                //positionLocalx.add((double)x);
-                //positionLocaly.add((double)y);
+        paintModelContainer.getPaintConnectionModel().addPosition(cnt, x, y, mStrokeNo.getValue());
+        //positionLocalx.add((double)x);
+        //positionLocaly.add((double)y);
         cnt++;
     }
+
     public void addPositionRequestfirst() {
-        paintModelContainer.getPaintConnectionModel().addPosition(0,fsx,fsy,mStrokeNo.getValue());
-        paintModelContainer.getPaintConnectionModel().addPosition(cnt,-1,-1,mStrokeNo.getValue());
+        paintModelContainer.getPaintConnectionModel().addPosition(0, fsx, fsy, mStrokeNo.getValue());
+        paintModelContainer.getPaintConnectionModel().addPosition(cnt, -1, -1, mStrokeNo.getValue());
         //Log.d("x", positionLocalx.toString());
         //Log.d("y", positionLocaly.toString());
         //positionLocalx.clear();
@@ -115,12 +114,15 @@
     }
 
     //-----------------------------------------------------------------
-    //
-    public void updatePageNo(MotionEvent event) {
+    // 操作するページを切り替える
+    public void switchToEditPageRequest(MotionEvent event) {
         PageOperationModel pageOperationModel = paintModelContainer.getPageOperationModel();
+        PageConnectionModel pageConnectionModel = paintModelContainer.getPageConnectionModel();
 
-        // 編集中のページ番号が最大ページ数を超えないように
-        pageOperationModel.updatePageNo(event, mCurPageNo, mPageSize.getValue());
+        pageOperationModel.changeEditPageNo(event, mCurPageNo, mPageSize.getValue());
+        //ページを操作したので更新
+        pageConnectionModel.getPage(mCurPageId);
+
     }
 
     //-----------------------------------------------------------------
@@ -130,6 +132,7 @@
 
         pageConnectionModel.addPage();
         pageConnectionModel.getPageSize(mPageSize);
+        Log.d("pageSize:", mPageSize.getValue().toString());
     }
 
     //-----------------------------------------------------------------
@@ -139,6 +142,16 @@
 
         pageConnectionModel.deletePage();
         pageConnectionModel.getPageSize(mPageSize);
+        //ページ削除後同じページ番号のページを再取得する必要あり
+        Log.d("pageSize:", mPageSize.getValue().toString());
+
+        //pageConnectionModel.getPage(mCurPageNo);
+    }
+
+    //-----------------------------------------------------------------
+    //
+    public void deleteStroke() {
+        this.mStrokes.getValue().clear();
     }
 
     //-----------------------------------------------------------------
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 41257da..114b080 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
@@ -1,5 +1,7 @@
 package org.ntlab.acanthus_client.views.paint.models;
 
+import android.util.Log;
+
 import androidx.lifecycle.MutableLiveData;
 
 import org.ntlab.acanthus_client.Acanthus;
@@ -60,7 +62,7 @@
     }
 
     //-----------------------------------------------------------------
-    //
+    // ページ削除
     public void deletePage() {
         final PagesRest pagesRest = retrofit.create(PagesRest.class);
 
@@ -79,7 +81,7 @@
     }
 
     //-----------------------------------------------------------------
-    //
+    // ページサイズ取得
     public void getPageSize(MutableLiveData<Integer> pageSize) {
         final PagesRest pagesRest = retrofit.create(PagesRest.class);
 
@@ -87,7 +89,8 @@
         call.enqueue(new Callback<Integer>() {
             @Override
             public void onResponse(Call<Integer> call, Response<Integer> response) {
-                if (response.isSuccessful()) pageSize.setValue(response.body());
+                if (response.isSuccessful())
+                    pageSize.setValue(response.body());
             }
 
             @Override
@@ -98,4 +101,28 @@
     }
 
     //-----------------------------------------------------------------
+    // ページ情報を取得するリクエスト
+    public void getPage(MutableLiveData<Integer> pageId) {
+        final PagesRest pagesRest = retrofit.create(PagesRest.class);
+
+        Call<Page> call = pagesRest.getPage(acanthus.getAid(), acanthus.getEditingPageNo());
+        call.enqueue(new Callback<Page>() {
+            @Override
+            public void onResponse(Call<Page> call, Response<Page> response) {
+                if (response.isSuccessful()) {
+                    //acanthus.setEditingPageId(response.body());
+                    // ページ番号とページIDを取得する
+                    acanthus.setEditingPageNo(response.body().getPageNo());
+                    acanthus.setEditingPageId(response.body().getPid());
+                }
+            }
+
+            @Override
+            public void onFailure(Call<Page> call, Throwable t) {
+                Log.d("failure", "omg");
+            }
+        });
+    }
+
+    //-----------------------------------------------------------------
 }
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 cb08f12..1c299f1 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
@@ -1,6 +1,7 @@
 package org.ntlab.acanthus_client.views.paint.models;
 
 import android.preference.SwitchPreference;
+import android.util.Log;
 import android.view.MotionEvent;
 import android.view.VelocityTracker;
 
@@ -9,8 +10,7 @@
 import org.ntlab.acanthus_client.Acanthus;
 
 //-----------------------------------------------------------------
-//
-
+// ページの操作
 public class PageOperationModel {
     //-----------------------------------------------------------------
     // スワイプの向き
@@ -31,19 +31,25 @@
 
     //-----------------------------------------------------------------
     //-----------------------------------------------------------------
-    public void updatePageNo(MotionEvent event, MutableLiveData<Integer> mCurPageNo, Integer pageSize) {
+    // 編集中のページを切り替える
+    public void changeEditPageNo(MotionEvent event, MutableLiveData<Integer> mCurPageNo, Integer pageSize) {
         mCurPageNo.setValue(acanthus.getEditingPageNo());
 
         //ページの枚数以上現在のページ番号を更新しない
-        if (getVelocityDirection(event).equals(SwipeDirectionType.LEFT) && (mCurPageNo.getValue() < (pageSize - 1)))
+        if (getVelocityDirection(event).equals(SwipeDirectionType.LEFT) && (mCurPageNo.getValue() < pageSize))
             incrementPageNo(mCurPageNo);
         if (getVelocityDirection(event).equals(SwipeDirectionType.RIGHT))
             decrementPageNo(mCurPageNo);
+
+
+
+        Log.d("pageNo", acanthus.getEditingPageNo().toString());
+        Log.d("pid", acanthus.getEditingPageId().toString());
     }
 
     //-----------------------------------------------------------------
     //-----------------------------------------------------------------
-    //
+    // ページを進める
     public void incrementPageNo(MutableLiveData<Integer> mPageNo) {
         Integer editingNo = acanthus.getEditingPageNo();
 
@@ -52,16 +58,16 @@
     }
 
     //-----------------------------------------------------------------s
-    //
-    private void decrementPageNo(MutableLiveData<Integer> mPageNo) {
+    // ページ番号を前に戻す
+    public void decrementPageNo(MutableLiveData<Integer> mPageNo) {
         Integer editingNo = acanthus.getEditingPageNo();
-        if (0 < editingNo) {
+
+        if (1 < editingNo) {
             acanthus.setEditingPageNo(acanthus.getEditingPageNo() - 1);
             mPageNo.setValue(acanthus.getEditingPageNo());
         }
     }
 
-
     //-----------------------------------------------------------------
     // 操作からスワイプの向きを取得する
     private SwipeDirectionType getVelocityDirection(MotionEvent event) {
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PaintConnectionModel.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PaintConnectionModel.java
index f2d866d..960c354 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PaintConnectionModel.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/models/PaintConnectionModel.java
@@ -58,9 +58,7 @@
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
     }
-//-----------------------------------------------------------------
-//----------▽▽POST▽▽----------
-    //-----------------------------------------------------------------
+
     //-----------------------------------------------------------------
     // ローカルでのストロークの追加(POST)
     public void addLocalStroke(MutableLiveData<Integer> mStrokeNo) {
@@ -70,7 +68,7 @@
         //-----------------------------------------------------------------
         // ストローク追加API
         Call<Integer> call = strokesRest.addStroke(
-                acanthus.getAid(), acanthus.getEditingPageNo(), 0, acanthus.getPreferenceUid(), acanthus.getPreferenceToken(),
+                acanthus.getAid(), acanthus.getEditingPageId(), 0, acanthus.getPreferenceUid(), acanthus.getPreferenceToken(),
                 0, 0, 10);
 
         // strokeNoを更新
@@ -82,21 +80,23 @@
 
             @Override
             public void onFailure(Call<Integer> call, Throwable t) {
-                Log.d("POSTonFailure: ","strokeNo");
+                Log.d("POSTonFailure: ", "strokeNo");
             }
         });
     }
 
     //-----------------------------------------------------------------
     // ローカルでの筆跡追加(POST)
-    public void addPosition(int i ,double x, double y, int currentStrokeNo) {
+    public void addPosition(int i, double x, double y, int currentStrokeNo) {
         final StrokesRest strokesRest = retrofit.create(StrokesRest.class);
 
         //Log.d("strokeNo:", currentStrokeNo);
+        Log.d("curPageId:", acanthus.getEditingPageId().toString());
+        Log.d("curPageNo:", acanthus.getEditingPageNo().toString());
 
         //-----------------------------------------------------------------
         // 座標追加
-        Call<Integer> call = strokesRest.addPositions(i,acanthus.getAid(), currentStrokeNo, x, y);
+        Call<Integer> call = strokesRest.addPositions(i, acanthus.getAid(), acanthus.getEditingPageId(), currentStrokeNo, x, y);
         call.enqueue(new Callback<Integer>() {
             @Override
             public void onResponse(Call<Integer> call, Response<Integer> response) {
@@ -105,15 +105,11 @@
 
             @Override
             public void onFailure(Call<Integer> call, Throwable t) {
-                Log.d("POSTonFailure: ","i:"+i+",x:"+x+",y:"+y );
+                Log.d("POSTonFailure: ", "i:" + i + ",x:" + x + ",y:" + y);
             }
         });
     }
-//----------△△POST△△----------
-//-----------------------------------------------------------------
-///////////////////////////////////////////////////////////////////////////////////////////////////////////
-//-----------------------------------------------------------------
-//----------▽▽GET▽▽----------
+
     //-----------------------------------------------------------------
     // 全strokeを取得する
     public void getStrokes(MutableLiveData<Collection<Stroke>> strokes) {
@@ -121,7 +117,7 @@
 
         //-----------------------------------------------------------------
         // 筆跡追加API
-        Call<Collection<Stroke>> call = strokesRest.getStrokes(acanthus.getAid(), 0, 0);
+        Call<Collection<Stroke>> call = strokesRest.getStrokes(acanthus.getAid(), acanthus.getEditingPageId(), 0);
         call.enqueue(new Callback<Collection<Stroke>>() {
             @Override
             public void onResponse(Call<Collection<Stroke>> call, Response<Collection<Stroke>> response) {
@@ -143,7 +139,7 @@
 
         //-----------------------------------------------------------------
         // 現在の筆跡番号の取得
-        Call<Integer> call = layersRest.getStrokeSize(acanthus.getAid(), 0, 0);
+        Call<Integer> call = layersRest.getStrokeSize(acanthus.getAid(), acanthus.getEditingPageId(), 0);
         call.enqueue(new Callback<Integer>() {
             @Override
             public void onResponse(Call<Integer> call, Response<Integer> response) {
@@ -156,11 +152,7 @@
             }
         });
     }
-//----------△△GET△△----------
-//-----------------------------------------------------------------
-///////////////////////////////////////////////////////////////////////////////////////////////////////////
-//-----------------------------------------------------------------
-//----------▽▽delete▽▽----------
+
     //-----------------------------------------------------------------
     // "Clear"ボタンによる描画の全消去 / サーバー側の筆跡全削除
     public void deleteStrokes() {
@@ -168,7 +160,7 @@
 
         //-----------------------------------------------------------------
         // 筆跡をすべて削除する
-        Call<String> call = strokesRest.deleteStrokes(acanthus.getAid(), acanthus.getPreferenceUid());
+        Call<String> call = strokesRest.deleteStrokes(acanthus.getAid(), acanthus.getEditingPageId(), acanthus.getPreferenceUid());
         call.enqueue(new Callback<String>() {
             @Override
             public void onResponse(Call<String> call, Response<String> response) {
@@ -179,7 +171,7 @@
             }
         });
     }
-//----------△△delete△△----------
-//-----------------------------------------------------------------
+
+    //-----------------------------------------------------------------
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageActivity.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageActivity.java
index 6e55aef..83f2533 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageActivity.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/page/PageActivity.java
@@ -75,7 +75,7 @@
     //-----------------------------------------------------------------
     //
     public void slidePage(MotionEvent event) {
-        paintViewModel.updatePageNo(event);
+        paintViewModel.switchToEditPageRequest(event);
     }
 
     //-----------------------------------------------------------------
@@ -89,13 +89,6 @@
     //-----------------------------------------------------------------
     //
     private void startObserve() {
-        paintViewModel.getPageLength().observe(this, new Observer<Integer>() {
-            @Override
-            public void onChanged(Integer i) {
-                binding.buttonAddPage.setText(String.valueOf(i));
-            }
-        });
-
         paintViewModel.getPageNo().observe(this, new Observer<Integer>() {
             @Override
             public void onChanged(Integer pageNo) {