Android Studio Flutter项目安卓无启动图标及Manifest标签报错求助

问题概况 #

• 卸载旧版Android Studio和SDK后，安装最新版Android Studio Flamingo及对应SDK
• Flutter新模板项目可在iOS/安卓正常运行，但iOS能生成启动图标，安卓真机与模拟器均无法显示启动图标
• AndroidManifest.xml中多个标签出现下划线提示
• flutter doctor检测无异常

flutter doctor输出 #

flutter doctor -v                
[✓] Flutter (Channel stable, 3.7.7, on macOS 12.6.3 21G419 darwin-x64, locale en-US)
    • Flutter version 3.7.7 on channel stable at /Users/lk/programs/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 2ad6cd72c0 (5 weeks ago), 2023-03-08 09:41:59 -0800
    • Engine revision 1837b5be5f
    • Dart version 2.19.4
    • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at /Users/lk/Library/Android/sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14C18
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)

[✓] VS Code (version 1.76.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.60.0

[✓] Connected device (3 available)
    • Pixel 2 XL (mobile) • 806KPDT1944522 • android-arm64  • Android 11 (API 30)
    • macOS (desktop)     • macos          • darwin-x64     • macOS 12.6.3 21G419 darwin-x64
    • Chrome (web)        • chrome         • web-javascript • Google Chrome 112.0.5615.49

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

相关截图 #

解决方案 #

一、安卓启动图标不生成问题

1. 清除缓存并重建项目
   运行以下命令：

   flutter clean
   flutter pub get
   flutter run
   

2. 验证Manifest图标配置
   打开android/app/src/main/AndroidManifest.xml，确认<application>标签内的图标路径正确：

   <application
       android:icon="@mipmap/ic_launcher"
       android:roundIcon="@mipmap/ic_launcher_round"
       ...>
   

3. 手动生成图标
   若自动生成失败，使用flutter_launcher_icons插件：
   • 在pubspec.yaml添加依赖：

     dev_dependencies:
       flutter_launcher_icons: "^0.13.1"
     

   • 添加图标配置：

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

   • 运行生成命令：

     flutter pub run flutter_launcher_icons:main
     

二、AndroidManifest.xml标签下划线问题

1. 匹配SDK版本
   打开android/app/build.gradle，确认以下版本与SDK 33匹配：

   android {
       compileSdkVersion 33
       defaultConfig {
           targetSdkVersion 33
           ...
       }
   }
   

2. 同步Gradle项目
   点击Android Studio右上角的「Sync Project with Gradle Files」按钮，完成同步。
3. 清除IDE缓存
   路径：File > Invalidate Caches...，选择「Invalidate and Restart」重启IDE。
4. 检查标签语法
   确认Manifest文件中标签无拼写错误、未闭合或多余属性问题。

内容的提问来源于stack exchange，提问作者Yogi Wannabe