diff --git a/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java b/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java
index f892e37..0a00eb2 100644
--- a/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java
+++ b/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java
@@ -3,18 +3,26 @@
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
+import com.example.citrusclient.models.Todo;
+import com.example.citrusclient.models.Book;
 import com.example.citrusclient.rest.TodosRest;
 
+
+import java.util.ArrayList;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
 import retrofit2.Retrofit;
 import retrofit2.converter.jackson.JacksonConverterFactory;
 
 public class TodosViewModel extends ViewModel {
-
     private final Retrofit retrofit;
     private final TodosRest todosRest;
 
     //LiveData
-    private final MutableLiveData<String> titleLiveData;
+    private final MutableLiveData<Book> curBookLiveData;
+    private final MutableLiveData<ArrayList<Todo>> todosLiveData;
 
     //Constructor
     public TodosViewModel()
@@ -24,25 +32,156 @@
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
         this.todosRest = retrofit.create(TodosRest.class);
-        this.titleLiveData = new MutableLiveData<>();
+        this.curBookLiveData = new MutableLiveData<>();
+        this.todosLiveData = new MutableLiveData<ArrayList<Todo>>();
     }
 
     //getter
-    public MutableLiveData<String> getTitleLiveData() {return titleLiveData;};
+    public MutableLiveData<Book> getCurBookLiveData() {return curBookLiveData;}
+    public MutableLiveData<ArrayList<Todo>> getTodosLiveData() {return todosLiveData;}
 
-    public void getTodos()
+    public void getAllTodos(String accountId,Integer bookId, String token)
     {
+        Call<ArrayList<Todo>> call = todosRest.getAllTodos(accountId, bookId, token);
+        call.enqueue(new Callback<ArrayList<Todo>>() {
+            @Override
+            public void onResponse(Call<ArrayList<Todo>> call, Response<ArrayList<Todo>> response) {
+                if (response.isSuccessful()) {
 
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<ArrayList<Todo>> call, Throwable t) {
+                System.out.println("ChangePw NetworkError" + t);
+            }
+
+        });
     }
 
-    public void putTodo()
+    public void getTodosByMonth(String accountId,Integer bookId, Integer year, Integer month,
+                                String token)
     {
+        Call<ArrayList<Todo>> call = todosRest.getTodosByMonth(accountId, bookId, year, month, token);
+        call.enqueue(new Callback<ArrayList<Todo>>() {
+            @Override
+            public void onResponse(Call<ArrayList<Todo>> call, Response<ArrayList<Todo>> response) {
+                if (response.isSuccessful()) {
 
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<ArrayList<Todo>> call, Throwable t) {
+                System.out.println("ChangePw NetworkError" + t);
+            }
+
+        });
     }
 
-    public void deleteTodo()
+    public void getTodosByDay(String accountId,Integer bookId, Integer year, Integer month,
+                              Integer day, String token)
     {
+        Call<ArrayList<Todo>> call = todosRest.getTodosByDay(accountId, bookId, year, month, day, token);
+        call.enqueue(new Callback<ArrayList<Todo>>() {
+            @Override
+            public void onResponse(Call<ArrayList<Todo>> call, Response<ArrayList<Todo>> response) {
+                if (response.isSuccessful()) {
 
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<ArrayList<Todo>> call, Throwable t) {
+                System.out.println("ChangePw NetworkError" + t);
+            }
+
+        });
+    }
+
+    public void getTodoById(String accountId,Integer bookId, Integer year, Integer month,
+                              Integer day, Integer todoId, String token)
+    {
+        Call<Todo> call = todosRest.getTodoById(accountId, bookId, year, month, day, todoId, token);
+        call.enqueue(new Callback<Todo>() {
+            @Override
+            public void onResponse(Call<Todo> call, Response<Todo> response) {
+                if (response.isSuccessful()) {
+
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<Todo> call, Throwable t) {
+                System.out.println("ChangePw NetworkError" + t);
+            }
+
+        });
+    }
+
+    public void createTodo(String accountId,Integer bookId, Integer year, Integer month,
+                           Integer day, String title, String token)
+    {
+        Call<Todo> call = todosRest.createTodo(accountId, bookId, year, month, day, title, token);
+        call.enqueue(new Callback<Todo>() {
+            @Override
+            public void onResponse(Call<Todo> call, Response<Todo> response) {
+                if (response.isSuccessful()) {
+
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<Todo> call, Throwable t) {
+                System.out.println("ChangePw NetworkError" + t);
+            }
+
+        });
+    }
+
+    public void setCheck(String accountId, Integer BookId, Integer year, Integer month,
+                           Integer day, Integer todoId, boolean check, String token)
+    {
+        Call<Void> call = todosRest.setCheck(accountId, BookId, year, month, day, todoId, check, token);
+        call.enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                if (response.isSuccessful()) {
+
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+
+            }
+        });
+    }
+
+    public void deleteTodo(String accountId, Integer BookId, Integer year, Integer month,
+                           Integer day, Integer todoId, String token)
+    {
+        Call<Void> call = todosRest.deleteTodoById(accountId, BookId, year, month, day, todoId, token);
+        call.enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                if (response.isSuccessful()) {
+
+                } else {
+
+                }
+            }
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+
+            }
+        });
     }
 
 }