{"id":702,"date":"2023-07-21T16:11:19","date_gmt":"2023-07-21T08:11:19","guid":{"rendered":"https:\/\/iichen.cn\/?p=702"},"modified":"2023-07-21T16:11:19","modified_gmt":"2023-07-21T08:11:19","slug":"702","status":"publish","type":"post","link":"https:\/\/iichen.cn\/?p=702","title":{"rendered":"Flutter-FlutterBoost\u4fee\u6539\u652f\u6301Android\u7269\u7406\u8fd4\u56de\u952e\u70b9\u51fb\u56de\u4f20\u53c2\u6570"},"content":{"rendered":"<h4>1. FlutterBoost\u6e90\u7801<\/h4>\n<ul>\n<li>FlutterBoostApp->pop\u65b9\u6cd5<\/li>\n<\/ul>\n<pre><code class=\"language-dart line-numbers\">  Future&lt;bool&gt; pop(\n      {String? uniqueId, Object? result, bool onBackPressed = false}) async {\n    BoostContainer? container;\n    if (uniqueId != null) {\n      container = _findContainerByUniqueId(uniqueId);\n      if (container == null) {\n        Logger.error('uniqueId=$uniqueId not found');\n        return false;\n      }\n      if (container != topContainer) {\n        await _removeContainer(container);\n        return true;\n      }\n    } else {\n      container = topContainer;\n    }\n    \/\/ ---------------------\u8ffd\u52a0\u90e8\u5206-----------------------------------\n    \/\/ \u8fd4\u56de\u952e\u518d\u5904\u7406\n    if(onBackPressed) {\n      List&lt;PopCallback&gt; callbackList = Binding().observers();\n      for(PopCallback callback in callbackList) {\n        var params = await callback.call();\n        if(result == null) {\n          result = params;\n        } else if(result is Map) {\n          result = {...result,...params};\n        }\n        break;\n        \/\/ print(\"&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; callBack $params\");\n        \/\/ if(params is Map &amp;&amp; params.containsKey(\"key\") &amp;&amp; params[\"key\"] == container?.pageInfo?.pageName) {\n        \/\/ }\n      }\n    }\n    \/\/ --------------------------------------------------------\n\n    final currentPage = topContainer?.topPage.pageInfo.uniqueId!;\n    assert(currentPage != null);\n    \/\/ .........\n    return true;\n  }\n<\/code><\/pre>\n<h4>2. \u989d\u5916\u65b0\u589e\u7c7b<\/h4>\n<pre><code class=\"language-dart line-numbers\">typedef PopCallback = Future&lt;Map&lt;String,dynamic&gt;&gt; Function();\n\nclass Binding {\n  final List&lt;PopCallback&gt; _observers = &lt;PopCallback&gt;[];\n\n  void addObserver(PopCallback observer) =&gt; _observers.add(observer);\n\n  bool removeObserver(PopCallback observer) =&gt; _observers.remove(observer);\n\n  static final Binding _instance = Binding._internal();\n\n  factory Binding() {\n    return _instance;\n  }\n\n  Binding._internal();\n\n  List&lt;PopCallback&gt; observers() =&gt; _observers;\n}\n<\/code><\/pre>\n<pre><code class=\"language-dart line-numbers\">import 'package:flutter\/material.dart';\n\nimport 'binding.dart';\n\nclass BoostWillPopeScope extends StatefulWidget {\n  final Widget child;\n  final PopCallback? onWillPop;\n  BoostWillPopeScope({required this.child,this.onWillPop,Key? key}) : super(key: key);\n\n  @override\n  State&lt;BoostWillPopeScope&gt; createState() =&gt; _BoostWillPopeScopeState();\n}\n\nclass _BoostWillPopeScopeState extends State&lt;BoostWillPopeScope&gt;{\n  @override\n  void initState() {\n    super.initState();\n    if(widget.onWillPop != null) {\n      Binding().addObserver(widget.onWillPop!);\n    }\n  }\n\n  @override\n  void dispose() {\n    super.dispose();\n    if(widget.onWillPop != null) {\n      Binding().removeObserver(widget.onWillPop!);\n    }\n  }\n\n  @override\n  void didChangeDependencies() {\n    super.didChangeDependencies();\n    if (widget.onWillPop != null)\n      Binding().removeObserver(widget.onWillPop!);\n    if (widget.onWillPop != null)\n      Binding().addObserver(widget.onWillPop!);\n\n  }\n\n  @override\n  void didUpdateWidget(BoostWillPopeScope oldWidget) {\n    super.didUpdateWidget(oldWidget);\n    if (widget.onWillPop != oldWidget.onWillPop) {\n      if (oldWidget.onWillPop != null)\n        Binding().removeObserver(oldWidget.onWillPop!);\n      if (widget.onWillPop != null)\n        Binding().addObserver(widget.onWillPop!);\n    }\n  }\n\n  @override\n  Widget build(BuildContext context) {\n    return widget.child;\n  }\n}\n\n<\/code><\/pre>\n<h4>3. export\u5c06BoostWillPopeScope\u66b4\u9732<\/h4>\n<blockquote><p>\n  flutter_boost.dart\u8ffd\u52a0\u5bfc\u5305\n<\/p><\/blockquote>\n<h4>4. \u4f7f\u7528<\/h4>\n<blockquote><p>\n  \u540cflutter sdk\u5185\u7684WillPopeScope\n<\/p><\/blockquote>\n<pre><code class=\"language-dart line-numbers\">return BoostWillPopeScope(\n    \/\/ \u6dfb\u52a0\u65b9\u6cd5\u56de\u8c03\u5e76\u8fd4\u56de\u9700\u8981\u7684\u53c2\u6570\u5373\u53ef\n    onWillPop: () async =&gt; {\n      \"key\":RouterKeys.feedback_history\n    },\n    child: Scaffold(\n        backgroundColor: CommonColors.backgroundColor,\n        appBar: GpAppBar(\n            elevation: 0,\n            leadingColors: CommonColors.appbarIconBlackColor,\n            title: Text(\"\u5386\u53f2\u8bb0\u5f55\"),\n        ),\n        body: Text(\"\")\n    ),\n);\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1. FlutterBoost\u6e90\u7801 FlutterBoostApp->pop\u65b9\u6cd5 Future&lt;bool [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,8],"tags":[],"class_list":["post-702","post","type-post","status-publish","format-standard","hentry","category-android","category-8"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Flutter-FlutterBoost\u4fee\u6539\u652f\u6301Android\u7269\u7406\u8fd4\u56de\u952e\u70b9\u51fb\u56de\u4f20\u53c2\u6570 - IIchen<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/iichen.cn\/?p=702\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flutter-FlutterBoost\u4fee\u6539\u652f\u6301Android\u7269\u7406\u8fd4\u56de\u952e\u70b9\u51fb\u56de\u4f20\u53c2\u6570 - IIchen\" \/>\n<meta property=\"og:description\" content=\"1. 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