.idea/gradle.xml

@@ -4,6 +4,7 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
         <option name="modules">

app/src/main/java/com/example/oplogy/AppDatabase.java

@@ -3,7 +3,7 @@ package com.example.oplogy;
 import androidx.room.Database;
 import androidx.room.RoomDatabase;
 
-@Database(entities = {SetUpTable.class}, version = 2)
+@Database(entities = {SetUpTable.class}, version = 2, exportSchema = false)
 public abstract class AppDatabase extends RoomDatabase {
     // データベースにアクセスするためのメソッドを提供する
     public abstract SetUpTableDao setUpTableDao();

app/src/main/java/com/example/oplogy/CreateUUID.java

@@ -5,12 +5,12 @@ import java.util.List;
 
 public class CreateUUID {
 
-    public static String generateUUID(List<String> classIdList ){
+    public static int generateUUID(List<String> classIdList ){
         while (true){
-            String uuid = String.valueOf((int)(Math.random()*100000));
+            String uuid = String.valueOf((int)(Math.random() * 1000000));
             boolean isDuplicate = false;
             for(String classId : classIdList){
-                if(Integer.parseInt(classId) == Integer.parseInt(uuid)){
+                if(classId.equals(uuid)){
                     //重複があればフラグを立て、ループを抜ける
                     isDuplicate = true;
                     break;
@@ -19,7 +19,9 @@ public class CreateUUID {
             //重複がなければ生成したUUIDを返す
             if (!isDuplicate) {
                 //firestoreに挿入処理
-                return uuid;
+                //テスト用
+                uuid="100";
+                return Integer.parseInt(uuid);
             }
         }
     }

app/src/main/java/com/example/oplogy/MainActivity.java

@@ -156,7 +156,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialog, int which) {
-                String classId = CreateUUID.generateUUID(classIdList);
+                classId = CreateUUID.generateUUID(classIdList);
                 Toast.makeText(MainActivity.this, "クラスID: " + classId, Toast.LENGTH_SHORT).show();
                 Log .d("classIdList", classIdList.toString());
 
@@ -292,4 +292,12 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         }
     }
 
+    @Override
+    protected void onResume(){
+        super.onResume();
+        if (classId != 100000) {
+            firestoreReception.getDocumentsByClassId(classId);
+        }
+    }
+
 }