android - Flutter包错误: This app is using a deprecated version of the Android embedding

Question

我创建了一个新包，但是当我运行 flutter pub 时出现此错误:

This app is using a deprecated version of the Android embedding.
To avoid unexpected runtime failures, or future build failures, try to migrate this app to the V2 embedding.
Take a look at the docs for migrating an app: https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects
The plugin `package_info_plus` requires your app to be migrated to the Android embedding v2. Follow the steps on the migration doc above and re-run this command.

但它是一个包，而不是一个应用程序。

我尝试关注https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects但我的 android 文件夹只包含:

// android/local.properties

sdk.dir=/Users/USERNAME/Library/Android/sdk
flutter.sdk=/Users/PATH_TO_FLUTTER/flutter

和

// android/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java

package io.flutter.plugins;

import io.flutter.plugin.common.PluginRegistry;

/**
 * Generated file. Do not edit.
 */
public final class GeneratedPluginRegistrant {
  public static void registerWith(PluginRegistry registry) {
    if (alreadyRegisteredWith(registry)) {
      return;
    }
  }

  private static boolean alreadyRegisteredWith(PluginRegistry registry) {
    final String key = GeneratedPluginRegistrant.class.getCanonicalName();
    if (registry.hasPlugin(key)) {
      return true;
    }
    registry.registrarFor(key);
    return false;
  }
}

如何解决这个问题？

Answer 1

如果您正在使用 Flutter Package(不是插件/应用程序) 您需要做的就是删除特定于平台的文件夹，其中:

android ios linux macos windows

之后运行这两个命令

flutter clean
flutter pub get

问题解决了!!

说明 flutter 包不需要这些文件夹，因为包通常不包含 native 或平台特定的代码。因此，可以安全地删除这些文件夹以避免 Android 嵌入警告。