无法预编译 flutter_launcher_icons:main:

Question

所以我尝试使用 flutter_launcher_icons 自动更改我的简单兴趣计算器应用的启动器图标。

这是我在 pubspec.yaml 中的代码

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^1.0.0
  flutter_launcher_icons: ^0.8.1

dev_dependencies:

  flutter_test:
    sdk: flutter

  flutter_launcher_icons: "^0.8.0"

flutter_icons:
  android: "launcher_icon"
  ios: true
  image_path: "assets/icon.png"

flutter:
  uses-material-design: true

我在运行 flutter pub get & 后得到的错误 flutter pub 运行 flutter_launcher_icons:main

Failed to precompile flutter_launcher_icons:main:
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.8.1/lib/utils.dart:1:8: Error: Error when reading '/C:/src/flutter/flutter/.pub-cache/hosted/
pub.dartlang.org/image-2.1.19/lib/image.dart': The system cannot find the path specified.

import 'package:image/image.dart';
       ^
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.8.1/lib/android.dart:4:8: Error: Error when reading '/C:/src/flutter/flutter/.pub-cache/hoste
d/pub.dartlang.org/image-2.1.19/lib/image.dart': The system cannot find the path specified.

import 'package:image/image.dart';
       ^
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.8.1/lib/utils.dart:3:1: Error: Type 'Image' not found.
Image createResizedImage(int iconSize, Image image) {
^^^^^
                                                 ^^^^^
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.8.1/lib/ios.dart:93:1: Error: Type 'Image' not found.
Image createResizedImage(IosIconTemplate template, Image image) {
^^^^^
pub finished with exit code 1

Answer 1

你可以这样改；

flutter_icons:
  android: true
  ios: true
  image_path: "assets/icon.png"

并且不需要使用那个 import 'package:image/image.dart';如果您从资产中获取图像，则无需像那样导入它。您应该创建一个名为 assets 的文件并将图像放入其中

然后将其粘贴到终端中。

flutter pub run flutter_launcher_icons:main

Answer 2

您没有在dev_dependencies 下正确导入flutter_launcher_icons 包。您不应该使用引号（“）。您可以使用以下内容编辑该部分：

dev_dependencies:

  flutter_test:
    sdk: flutter

  flutter_launcher_icons: ^0.8.0

Answer 3

在我的情况下，图像包没有被正确下载，所以我去了 ~\flutter.pub-cache\hosted\pub.dartlang.org\image-3.0.8 并从 git 克隆了代表：https://github.com/brendan-duncan/image

之后该命令起作用了。