diff --git a/app/src/main/java/com/example/cosmosclient/views/CreateGroupActivity.java b/app/src/main/java/com/example/cosmosclient/views/CreateGroupActivity.java
index 14e774e..49e3d17 100644
--- a/app/src/main/java/com/example/cosmosclient/views/CreateGroupActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/CreateGroupActivity.java
@@ -62,21 +62,22 @@
             public void onClick(View view){
                 //ボタン連打防止
                 createGroupButton.setEnabled(false);
+                createGroupButton.setBackgroundColor(0xaa808080);
                 new Handler().postDelayed(new Runnable() {
                     public void run() {
                         createGroupButton.setEnabled(true);
+                        createGroupButton.setBackgroundColor(0xaa009688);
                     }
                 }, 1000L);
 
-                try {
-                    Call<Group> createGroup = createGroupService.createGroup(groupNameText.getText().toString(), uId, token);
+                Call<Group> createGroup = createGroupService.createGroup(groupNameText.getText().toString(), uId, token);
 
-                    createGroup.enqueue(new Callback<Group>() {
-                        @Override
-                        public void onResponse(Call<Group> call, Response<Group> response) {
-                            if (response.isSuccessful()) {
-                                //成功時
-                                Group result = response.body();
+                createGroup.enqueue(new Callback<Group>() {
+                    @Override
+                    public void onResponse(Call<Group> call, Response<Group> response) {
+                        if (response.isSuccessful()) {
+                            //成功時
+                            Group result = response.body();
 
 //                                //確認用
 //                                System.out.println(result.getgId());
@@ -84,28 +85,25 @@
 //                                System.out.println(result.getRequests());
 //                                System.out.println(result.getUri());
 
-                                Toast.makeText(CreateGroupActivity.this,
-                                        "グループを作成しました", Toast.LENGTH_SHORT).show();
-                                finish();
-                            } else {
-                                //onFailureでキャッチできない用のエラー
-                                System.out.println("");
-                                Toast.makeText(CreateGroupActivity.this,
-                                        "通信エラー",Toast.LENGTH_SHORT).show();
-                            }
-                        }
-
-                        @Override
-                        public void onFailure(Call<Group> call, Throwable t) {
-                            //失敗時
-                            t.printStackTrace();
                             Toast.makeText(CreateGroupActivity.this,
-                                    "グループ作成失敗",Toast.LENGTH_SHORT);
+                                    "グループを作成しました", Toast.LENGTH_SHORT).show();
+                            finish();
+                        } else {
+                            //onFailureでキャッチできない用のエラー
+                            System.out.println("");
+                            Toast.makeText(CreateGroupActivity.this,
+                                    "通信エラー",Toast.LENGTH_SHORT).show();
                         }
-                    });
-                }catch(Exception e){
-                    e.printStackTrace();
-                }
+                    }
+
+                    @Override
+                    public void onFailure(Call<Group> call, Throwable t) {
+                        //失敗時
+                        t.printStackTrace();
+                        Toast.makeText(CreateGroupActivity.this,
+                                "グループ作成失敗",Toast.LENGTH_SHORT).show();
+                    }
+                });
             }
         });
     }