1

lib/zhiwen.dart

@@ -1,5 +1,6 @@
 
 import 'zhiwen_platform_interface.dart';
+import 'dart:async';
 
 class Zhiwen {
   Future<String?> getPlatformVersion() {
@@ -37,4 +38,10 @@ class Zhiwen {
   Future<Map<String, dynamic>> getUserCount() {
     return ZhiwenPlatform.instance.getUserCount();
   }
+
+  /// 获取指纹录入进度事件流
+  /// 返回包含 step, totalSteps, progress, message 的 Map
+  Stream<Map<String, dynamic>> get progressStream {
+    return ZhiwenPlatform.instance.progressStream;
+  }
 }

lib/zhiwen_method_channel.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
+import 'dart:async';
 
 import 'zhiwen_platform_interface.dart';
 
@@ -9,6 +10,13 @@ class MethodChannelZhiwen extends ZhiwenPlatform {
   @visibleForTesting
   final methodChannel = const MethodChannel('zhiwen');
 
+  /// The event channel for receiving fingerprint enrollment progress.
+  @visibleForTesting
+  final progressEventChannel = const EventChannel('zhiwen_progress');
+
+  /// 进度事件流控制器
+  Stream<Map<String, dynamic>>? _progressStream;
+
   @override
   Future<String?> getPlatformVersion() async {
     final version = await methodChannel.invokeMethod<String>('getPlatformVersion');
@@ -64,4 +72,13 @@ class MethodChannelZhiwen extends ZhiwenPlatform {
     final result = await methodChannel.invokeMethod('getUserCount');
     return Map<String, dynamic>.from(result as Map);
   }
+
+  /// 获取指纹录入进度事件流
+  @override
+  Stream<Map<String, dynamic>> get progressStream {
+    _progressStream ??= progressEventChannel
+        .receiveBroadcastStream()
+        .map((event) => Map<String, dynamic>.from(event as Map));
+    return _progressStream!;
+  }
 }

lib/zhiwen_platform_interface.dart

@@ -1,4 +1,5 @@
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
+import 'dart:async';
 
 import 'zhiwen_method_channel.dart';
 
@@ -24,6 +25,11 @@ abstract class ZhiwenPlatform extends PlatformInterface {
   Future<Map<String, dynamic>> deleteOneFingerprint(int userId);
   Future<Map<String, dynamic>> identifyFingerprint();
   Future<Map<String, dynamic>> getUserCount();
+
+  /// 获取指纹录入进度事件流
+  /// 返回包含 step, totalSteps, progress, message 的 Map
+  Stream<Map<String, dynamic>> get progressStream;
+
   /// Platform-specific implementations should set this with their own
   /// platform-specific class that extends [ZhiwenPlatform] when
   /// they register themselves.