dart Flutter中的视频库选择器上的应用程序崩溃

lsmepo6l 于 2023-09-28 发布在 Flutter

关注(0)|答案(3)|浏览(173)

我的flutter版本是3.13.2，我使用的是image_picker 1.0.4。
当从iOS图库中选择视频时，它第一次选择视频时没有任何崩溃，但第二次总是崩溃。它不会在Android设备上崩溃，在拾取图像时也不会崩溃。我第二次从图库中选择视频时总是崩溃。
以下是我从Firebase crashlytics收到的崩溃日志：
在从主线程访问布局引擎后，不得从后台线程执行对布局引擎的修改

TextButton(
  onPressed: () async {
    final ImagePicker picker = ImagePicker();
    final XFile? galleryVideo =
        await picker.pickVideo(source: ImageSource.gallery);
  },
  child: Text("Pick video from gallery"),
),

我已经尝试将Flutter版本更新到最新版本，并将库版本更新到最新版本。

dart

来源：https://stackoverflow.com/questions/77022955/application-crashing-on-video-gallery-picker-in-flutter

3条答案

按热度按时间

e7arh2l61#

我在iOS模拟器中尝试并测试了下面提到的代码。一切正常。你应该尝试和测试，并提供一个承认我。你可以在评论区问任何问题。
在Info.plist文件中添加以下代码：

<key>NSPhotoLibraryUsageDescription</key>
<string>This app requires access to the photo library.</string>
    
<key>NSCameraUsageDescription</key>
<string>This app requires access to the camera.</string>
<key>NSMicrophoneUsageDescription</key>
<string>This app does not require access to the microphone.</string>

将这些代码复制并粘贴到main.dart文件中：

import "package:flutter/material.dart";
import "package:image_picker/image_picker.dart";
void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}
class MyApp extends StatelessWidget {
  const MyApp({super.key});
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Flutter Demo",
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(),
      debugShowCheckedModeBanner: false,
    );
  }
}
class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});
  @override
  State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
  final ImagePicker picker = ImagePicker();
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: ElevatedButton(
          onPressed: openVideoPicker,
          child: const Text("Pick Video From Gallery"),
        ),
      ),
    );
  }
  Future<void> openVideoPicker() async {
    XFile xFile = XFile("");
    xFile = await picker.pickVideo(source: ImageSource.gallery) ?? XFile("");
    xFile.path.isEmpty ? print("Picker Close") : print("Picked: ${xFile.path}");
    return Future<void>.value();
  }
}