相关疑难解决方法(0)

我的 flutter 应用程序在运行时抛出此异常。

MissingPluginException（在通道plugins.flutter.io/path_provider上找不到方法getTemporaryDirectory的实现）

主程序.dart

Directory tp = await getTemporaryDirectory();

File tempFile = File('${tp.path}/flutter.pdf');

ByteData bd = await rootBundle.load('assets/flutter.pdf');

tempFile=await tempFile.writeAsBytes(bd.buffer.asUint8List(), flush: true);

pupspec.yaml

 name: flutterapp
    description: A new Flutter project.

    # The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev

# The following defines the version and build number for your application.
# …