为啥在颤振项目中添加启动器图标时出现错误？

Posted 2023-02-23

【中文标题】为啥在颤振项目中添加启动器图标时出现错误？

【英文标题】：Why am I getting errors while adding launcher icon in flutter project?为什么在颤振项目中添加启动器图标时出现错误？

【发布时间】：2022-01-15 09:36:45

【问题描述】：

所以，我正在尝试用我的图标更改默认的颤振启动器图标。我正在使用来自pub.dev 的flutter_launcher_icons: ^0.9.2。 pubspec.yaml 中的代码：

dependencies:
  flutter:
    sdk: flutter


  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for ios style icons.
  cupertino_icons: ^1.0.2
  hexcolor: ^2.0.5
  google_fonts: ^2.1.0
  flutter_neumorphic: ^3.2.0
  flutter_launcher_icons: ^0.9.2

dev_dependencies:
  flutter_lints: ^1.0.4
  flutter_test:
    sdk: flutter

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

但是当我运行 flutter pub run flutter_launcher_icons:main 时，我收到错误消息：

  ════════════════════════════════════════════
     FLUTTER LAUNCHER ICONS (v0.9.1)
  ════════════════════════════════════════════


✓ Successfully generated launcher icons
Unhandled exception:
FormatException: Invalid number (at character 1)

^

#0      int._handleFormatError (dart:core-patch/integers_patch.dart:129:7)
#1      int.parse (dart:core-patch/integers_patch.dart:55:14)
#2      minSdk (package:flutter_launcher_icons/android.dart:309:18)
#3      createIconsFromConfig (package:flutter_launcher_icons/main.dart:94:47)
#4      createIconsFromArguments (package:flutter_launcher_icons/main.dart:60:7)
#5      main (file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.9.2/bin/main.dart:6:26)
#6      _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:295:32)
#7      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:192:12)
pub finished with exit code 255

而且图标没有改变。

可能是什么问题？

=> 我的意思是，因为它以前工作过很多次...

【问题讨论】：

删除命令有效吗？

试用版0.9.2。它不会修复它，但它可能会给出更好的错误？

【参考方案1】：

转到android/app/build.gradle 并将minSdkVersion 和targetSdkVersion 更改为整数值。

minSdkVersion 21
targetSdkVersion 29
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName

然后做剩下的，即

pub.get -> flutter pub run flutter_launcher_icons:main

【参考方案2】：

解决问题的另一种方法，这也对我有用。

关于

这个错误主要是由于android: true引起的，我在参考了很多文章后尝试使用

(pubspec.yaml)

flutter_icons:
  image_path: "images/icon.png" 
  android: false
  ios: true

它只对 ios 有效，之后我得到了一个用于 ios 的推荐代码。我加了。

flutter_icons:
  image_path: "images/icon.png" 
  android: false
  ios: true
  remove_alpha_ios: true  //recommendation added

最后一步

（可选）

错误是我做的

检查你是否在同一个文件中写了任何额外的代码，因为我在文件build.gradle中的额外代码遇到了很多麻烦。这一行用于从@获取flutter.minSdkVersion的值987654328@文件。

def flutterminSdkVersion = localProperties.getProperty('flutter.minSdkVersion')

(android\app\build.gradle)

    minSdkVersion 16 
    targetSdkVersion flutter.targetSdkVersion
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName

然后运行常规代码

flutter pub get 
flutter pub run flutter_launcher_icons:main

我得到了输出

 ════════════════════════════════════════════
     FLUTTER LAUNCHER ICONS (v0.9.1)
  ════════════════════════════════════════════

• Creating default icons Android
• Overwriting the default Android launcher icon with a new icon
• Overwriting default iOS launcher icon with new icon

✓ Successfully generated launcher icons

上面的代码最终解决了这个问题，我希望任何人都可以从中得到帮助并节省他/她的宝贵时间。

附上一些资料，这有助于我做出最终裁决。

https://issueexplorer.com/issue/fluttercommunity/flutter_launcher_icons/301 https://github.com/fluttercommunity/flutter_launcher_icons/issues/88