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 d30d202..e79c3b3 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
@@ -6,64 +6,72 @@
 //-----------------------------------------------------------------
 // ユーザーアカウント
 public class Acanthus extends Application {
+    //-----------------------------------------------------------------
     private Integer preferenceUid;
     private String preferenceName;
     private String preferenceEmail;
     private String preferencePassword;
     private String preferenceToken;
+    //-----------------------------------------------------------------
+    private Integer aid;
 
     //-----------------------------------------------------------------
-    // setter
-    public Integer getPreferenceUid(){
-        if(preferenceUid == null){
-            SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
+    // getter
+    public Integer getPreferenceUid() {
+        if (preferenceUid == null) {
+            SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
             preferenceUid = preferences.getInt("uid", 0);
         }
         return preferenceUid;
     }
 
     public String getPreferenceName() {
-        if(preferenceName == null){
-            SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
+        if (preferenceName == null) {
+            SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
             preferenceName = preferences.getString("name", "");
         }
         return preferenceName;
     }
 
     public String getPreferenceEmail() {
-        if(preferenceEmail == null){
-            SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
+        if (preferenceEmail == null) {
+            SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
             preferenceEmail = preferences.getString("email", "");
         }
         return preferenceEmail;
     }
 
     public String getPreferencePassword() {
-        if(preferencePassword == null){
-            SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
+        if (preferencePassword == null) {
+            SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
             preferencePassword = preferences.getString("password", "");
         }
         return preferencePassword;
     }
 
     public String getPreferenceToken() {
-        if(preferenceToken == null){
-            SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
+        if (preferenceToken == null) {
+            SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
             preferenceToken = preferences.getString("token", "");
         }
         return preferenceToken;
     }
 
+    public Integer getAid() {
+        if (this.aid == null) this.aid = 1111;
+        return aid;
+    }
+
     //-----------------------------------------------------------------
     // setter
-    public void setPreferenceUid(Integer preferenceUid){
+    public void setPreferenceUid(Integer preferenceUid) {
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
         editor.putInt("uid", preferenceUid);
         editor.commit();
     }
 
-    public void setPreferenceName(String preferenceName){
+    public void setPreferenceName(String preferenceName) {
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
         editor.putString("name", preferenceName);
@@ -77,19 +85,22 @@
         editor.commit();
     }
 
-    public void setPreferencePassword(String preferencePassword){
+    public void setPreferencePassword(String preferencePassword) {
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
         editor.putString("password", preferencePassword);
         editor.commit();
     }
 
-    public void setPreferenceToken(String preferenceToken){
+    public void setPreferenceToken(String preferenceToken) {
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
         editor.putString("token", preferenceToken);
         editor.commit();
     }
 
+    public void setAid(Integer aid) {
+        this.aid = aid;
+    }
     //-----------------------------------------------------------------
 }
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
new file mode 100644
index 0000000..8f9dc88
--- /dev/null
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintViewModel.java
@@ -0,0 +1,63 @@
+package org.ntlab.acanthus_client.views.paint;
+
+import android.graphics.Paint;
+import android.view.View;
+
+import androidx.lifecycle.ViewModel;
+
+import org.ntlab.acanthus_client.Acanthus;
+import org.ntlab.acanthus_client.resources.accounts.LoginRest;
+import org.ntlab.acanthus_client.resources.gallery.StrokesRest;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.jackson.JacksonConverterFactory;
+import retrofit2.converter.scalars.ScalarsConverterFactory;
+
+
+//-----------------------------------------------------------------
+//
+public class PaintViewModel extends ViewModel {
+    private Retrofit retrofit;
+
+    //-----------------------------------------------------------------
+    //-----------------------------------------------------------------
+    public PaintViewModel() {
+        Retrofit retrofit = new Retrofit.Builder()
+                .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/acanthus/")
+                .addConverterFactory(ScalarsConverterFactory.create())
+                .addConverterFactory(JacksonConverterFactory.create())
+                .build();
+    }
+
+    //-----------------------------------------------------------------
+    //-----------------------------------------------------------------
+    //
+    public void addPosition(Acanthus acanthus, int strokeNo, float x, float y) {
+        final StrokesRest strokesRest = retrofit.create(StrokesRest.class);
+
+        //-----------------------------------------------------------------
+        //
+        Call<Integer> call = strokesRest.addPositions(acanthus.getAid(), strokeNo, x, y);
+        call.enqueue(new Callback<Integer>() {
+            @Override
+            public void onResponse(Call<Integer> call, Response<Integer> response) {
+//                if(response.isSuccessful())
+            }
+
+            @Override
+            public void onFailure(Call<Integer> call, Throwable t) {
+
+            }
+        });
+    }
+
+    //-----------------------------------------------------------------
+    //
+    public void getRemoteAnimationInfo() {
+    }
+
+
+}