app/src/main/java/one/nem/kidshift/FabManager.java

@@ -0,0 +1,53 @@
+package one.nem.kidshift;
+
+// HiltのSingletonインスタンス
+// FloatingActionButtonを別モジュールから制御するためのクラス
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+import javax.inject.Inject;
+
+import one.nem.kidshift.model.callback.FabEventCallback;
+import one.nem.kidshift.utils.KSLogger;
+import one.nem.kidshift.utils.factory.KSLoggerFactory;
+
+public class FabManager {
+    private FloatingActionButton fab;
+
+    private final KSLogger logger;
+
+    @Inject
+    public FabManager(KSLoggerFactory loggerFactory) {
+        this.logger = loggerFactory.create("FabManager");
+    }
+
+    public void setFab(FloatingActionButton fab) {
+        this.fab = fab;
+    }
+
+    private void checkFab() {
+        if (fab == null) {
+            logger.error("Fab is not set");
+            throw new IllegalStateException("Fab is not set");
+        }
+    }
+
+    public void show() {
+        checkFab();
+        fab.show();
+    }
+
+    public void hide() {
+        checkFab();
+        fab.hide();
+    }
+
+    public void setFabEventCallback(FabEventCallback callback) {
+        checkFab();
+        fab.setOnClickListener(v -> callback.onClicked());
+        fab.setOnLongClickListener(v -> {
+            callback.onLongClicked();
+            return true;
+        });
+    }
+}

app/src/main/java/one/nem/kidshift/MainActivity.java

@@ -80,28 +80,6 @@ public class MainActivity extends AppCompatActivity {
         fab = findViewById(R.id.mainFab);
     }
 
-    public class FabControl{
-        public void showFab() {
-            fab.setVisibility(View.VISIBLE);
-        }
-
-        public void hideFab() {
-            fab.setVisibility(View.GONE);
-        }
-
-        public void setFabIcon(int iconResId) {
-            fab.setImageResource(iconResId);
-        }
-
-        public void setFabEventCallback(FabEventCallback callback) {
-            fab.setOnClickListener(v -> callback.onClicked());
-            fab.setOnLongClickListener(v -> {
-                callback.onLongClicked();
-                return true;
-            });
-        }
-    }
-
     /**
      * 起動時にバックグラウンドで行う各種更新処理とか
      */