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lib/utils/debouncer.dart

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+import 'dart:async';
+import 'dart:ui';
+
+class Debouncer {
+  final int milliseconds;
+  Timer? _timer;
+
+  Debouncer({this.milliseconds = 500});
+
+  /// 调用时会延迟执行，如果期间再次调用会重置计时器
+  void run(VoidCallback action) {
+    _timer?.cancel();
+    _timer = Timer(Duration(milliseconds: milliseconds), action);
+  }
+
+  /// 页面销毁时要记得调用
+  void dispose() {
+    _timer?.cancel();
+  }
+}