32 lines
1.1 KiB
Dart
32 lines
1.1 KiB
Dart
import 'dart:io';
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import 'dart:ui';
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import 'package:flutter/services.dart';
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import 'package:flutter/widgets.dart';
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// 必须标注：原生启动后台 isolate 时要从 native 闭包化这个入口函数，
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// 新版 Flutter/Dart 不加 @pragma('vm:entry-point') 会报 "To closurize ... it must be annotated"，
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// 后台 isolate 起不来 → 下载进度/成功回调永远到不了 Dart，进度条不刷新。
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@pragma('vm:entry-point')
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void callbackDispatcher() {
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// Initialize state necessary for MethodChannels.
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WidgetsFlutterBinding.ensureInitialized();
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const MethodChannel backgroundChannel = MethodChannel('vincent/m3u8_downloader_background', JSONMethodCodec());
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backgroundChannel.setMethodCallHandler((MethodCall call) async {
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final dynamic args = call.arguments;
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final CallbackHandle handle = CallbackHandle.fromRawHandle(args[0]);
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final Function? closure = PluginUtilities.getCallbackFromHandle(handle);
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if (closure == null) {
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print('Fatal: could not find callback');
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exit(-1);
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}
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closure(args[1]);
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});
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backgroundChannel.invokeMethod('didInitializeDispatcher');
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} |