fix: clear badge on app open, add clearBadge method

Matthias Nott

2026-04-01 e7c5b5de5160f3d82fc9c36bc5185b5c6e091e9e

 lib/services/push_service.dart
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@@ -1,4 +1,5 @@
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 import 'package:flutter/foundation.dart';
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+import 'package:flutter/services.dart';
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 import 'package:push/push.dart';
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 import 'mqtt_service.dart';
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@@ -82,13 +83,26 @@
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     };
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   }
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-  /// Re-send the last known token when MQTT reconnects.
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+  /// Re-send the last known token when MQTT reconnects, and clear badge.
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   void onMqttConnected() {
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     final token = _lastToken;
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     if (token != null) {
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       debugPrint('[Push] re-registering token after MQTT reconnect');
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       _sendTokenToDaemon(token);
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     }
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+    clearBadge();
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+  }
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+
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+  /// Clear the app icon badge number.
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+  static void clearBadge() {
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+    try {
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+      // Use UIApplication.shared.applicationIconBadgeNumber = 0 via platform channel
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+      const platform = MethodChannel('com.tekmidian.pailot/badge');
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+      platform.invokeMethod('clearBadge').catchError((_) {
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+        // Fallback: UNUserNotificationCenter approach
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+        debugPrint('[Push] clearBadge via platform channel failed, using Push API');
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+      });
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+    } catch (_) {}
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   }
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   /// Publish the device token to the daemon via MQTT.