Flutter执行build apk --release失败，遇依赖下载403错误求解决

核心问题是Gradle无法从Flutter的Google Storage镜像下载AndroidX依赖（返回403 Forbidden），字体摇树警告不影响构建失败，无需纠结--no-tree-shake-icons参数。以下是针对性解决步骤：

1. 添加国内Maven镜像加速依赖下载 #

修改项目根目录的build.gradle，在buildscript和allprojects的repositories中添加阿里云镜像，优先从国内源拉取：

buildscript {
    ext.kotlin_version = '1.7.10'
    repositories {
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/public' }
        maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:7.3.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/public' }
        google()
        mavenCentral()
    }
}

2. 强制依赖从官方仓库拉取 #

如果上述镜像仍无效，可强制Gradle跳过Flutter的镜像源，直接从Google和Maven Central获取AndroidX依赖。在项目根目录的build.gradle中添加resolutionStrategy：

allprojects {
    repositories {
        // 保留原有仓库配置
    }
    configurations.all {
        resolutionStrategy {
            eachDependency { details ->
                if (details.requested.group == 'androidx' || details.requested.group == 'com.google.android.material') {
                    details.useRepository {
                        repository {
                            url 'https://maven.google.com/'
                            name 'Google'
                        }
                    }
                }
            }
        }
    }
}

3. 配置Gradle代理（网络受限环境） #

如果处于网络受限环境，在项目根目录的gradle.properties中添加代理配置（替换为可用的代理地址）：

systemProp.http.proxyHost=your-proxy-host
systemProp.http.proxyPort=your-proxy-port
systemProp.https.proxyHost=your-proxy-host
systemProp.https.proxyPort=your-proxy-port

4. 清理缓存并重新构建 #

执行以下命令彻底清理缓存后重新构建：

flutter clean
rm -rf android/.gradle
flutter pub get
flutter build apk --release

内容的提问来源于stack exchange，提问作者Ali