47 lines
976 B
Dart
47 lines
976 B
Dart
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import 'dart:async';
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import 'package:flutter/material.dart';
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final RouteObserver<ModalRoute<void>> routeObserver =
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RouteObserver<ModalRoute<void>>();
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Future<dynamic> navPushOrReplace(
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BuildContext context, WidgetBuilder builder) async {
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if (_depth < _depthMax) {
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return Navigator.push(
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context,
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MaterialPageRoute(builder: builder),
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);
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} else {
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return Navigator.pushReplacement(
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context,
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MaterialPageRoute(builder: builder),
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);
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}
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}
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var navigatorObserver = _NavigatorObserver();
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const _depthMax = 15;
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var _depth = 0;
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int currentDepth() {
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return _depth;
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}
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class _NavigatorObserver extends NavigatorObserver {
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@override
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void didPop(Route route, Route? previousRoute) {
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_depth--;
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print("DEPTH : $_depth");
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super.didPop(route, previousRoute);
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}
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@override
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void didPush(Route route, Route? previousRoute) {
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_depth++;
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print("DEPTH : $_depth");
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super.didPush(route, previousRoute);
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}
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}
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