错误信息：

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ‘:app:lintVitalRelease’.
  Could not resolve all artifacts for configuration ‘:app:debugRuntimeClasspath’.
  Failed to transform libs.jar to match attributes {artifactType=processed-jar, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}.
  Execution failed for JetifyTransform: /Users/apple/Documents/project/flutter/private/yousi_teacher/build/app/intermediates/flutter/debug/libs.jar.
  Transform’s input file does not exist: /Users/apple/Documents/project/flutter/private/yousi_teacher/build/app/intermediates/flutter/debug/libs.jar. (See https://issuetracker.google.com/issues/158753935)
• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
• Get more help at https://help.gradle.org

在运行 flutter build apk 的时候报错，只有打包 release 版本才会出现错误，debug可以正常运行。
百度了一种解决方案是在 android 里 app 目录下的 build.gradle 中

android {
    lintOptions {
        disable 'InvalidPackage'
        checkReleaseBuilds false
        abortOnError false
    }
    
}

添加 checkReleaseBuilds 和 abortOnError
这样设置完虽然可以正常打包，但是 app 安装完打开就崩溃。所以这种方法并不能从根本上解决问题。

尝试第二种方案：

修改 build.gradle

buildscript {
    repositories {
//        google()
//        jcenter()
        maven { url'https://maven.aliyun.com/repository/google'}
        maven { url'https://maven.aliyun.com/repository/jcenter'}
        maven { url'http://maven.aliyun.com/nexus/content/groups/public'}
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.1'
    }
}

还是失败

升级 gradle 版本到 7.0

还是失败

在 app/build.gradle 关闭混淆

android {
    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.release
            //是否开启混淆，开启需要设置混淆
            minifyEnabled false
            //移除无用资源
            shrinkResources flase
            //混淆文件配置
//            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

也不行
降级 gradle 到 5.1.1。在 gradle/wrapper/gradle-wrapper.properties 中修改

#Fri Sep 03 12:29:01 CST 2021
distributionBase=GRADLE_USER_HOME
distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-bin.zip
distributionPath=wrapper/dists
zipStorePath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME

同时降级 tool.build.gradle 到3.4.2。在 android/build.gradle 修改

buildscript {
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

打包成功，安装运行也没问题。

于是去打包另外一个项目，又出现

• What went wrong:
  Execution failed for task ‘:alipay_kit:processVendorReleaseManifest’.
  Manifest merger failed with multiple errors, see logs

因为错误提到了 multiple ，猜想可能需要开启 multiDex
在 app/build.gradle 中的 defaultConfig 里配置，同时 dependencies 引入依赖

android {
    defaultConfig {
      .....
        multiDexEnabled true

    }
}
dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
    implementation 'com.android.support:multidex:1.0.3'
}

打包报错，说明不是这的问题，再看错误日志

Users/apple/Documents/project/flutter/sdk/flutter/.pub-cache/hosted/pub.flutter-io.cn/alipay_kit-2.0.0/android/src/vendor/AndroidManifest.xml:6:9-63 Error:
Missing ‘package’ key attribute on element package at AndroidManifest.xml:6:9-63
/Users/apple/Documents/project/flutter/sdk/flutter/.pub-cache/hosted/pub.flutter-io.cn/alipay_kit-2.0.0/android/src/vendor/AndroidManifest.xml Error:
Validation failed, exiting
FAILURE: Build failed with an exception.

点击查看报错文件 AndroidManifest 发现

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="io.github.v7lin.alipay_kit">

    <queries>
        <!-- targetSdkVersion>=30 -> Android 11 软件包可见性 -->
        <package android:name="com.eg.android.AlipayGphone" />
    </queries>
</manifest>

根据提示将targetSdkVersion 值和 compileSdkVersion 值设置 >=30
打包依然报错，那就只能去看插件了
文档没问题，去 issus 搜 AndroidManifest
找到了一个关闭的问题，说明不止我遇到了

buildscript {
    dependencies {
        // Android 11兼容，需升级Gradle到3.5.4/3.6.4/4.x.y
        classpath 'com.android.tools.build:gradle:3.5.4'
    }
}

别忘了把 gradle version 也升级 到 5.4.1。

构建成功