避免重复初始化异常

lib/data/services/login_service.dart

@@ -12,14 +12,25 @@ class LoginService {
           return '';
         }));
 
-    if (Firebase.apps.isEmpty) {
-      Firebase.initializeApp(
-        name: 'DeepSound',
-        options: DefaultFirebaseOptions.currentPlatform,
-        //demoProjectId:'1:907754492821:android:2deffc5aa1037ae2145c9c'
-      ).then((value) {
-        print('Firebase Initialized:${value.options}');
-      });
+    _initializeFirebase();
+  }
+
+  Future<void> _initializeFirebase() async {
+    try {
+      // 尝试获取已存在的实例
+      Firebase.app('DeepSound');
+      print('已存在的 Firebase 实例被重用');
+    } catch (e) {
+      try {
+        // 如果不存在则初始化新实例
+        await Firebase.initializeApp(
+          name: 'DeepSound',
+          options: DefaultFirebaseOptions.currentPlatform,
+        );
+        print('Firebase 初始化成功');
+      } catch (e) {
+        print('Firebase 初始化失败: $e');
+      }
     }
   }
 }