找不到 com.android.tools:r8:1.5.25

Question

A problem occurred configuring root project 'android'.

• What went wrong: A problem occurred configuring root project 'android'.

Could not resolve all artifacts for configuration ':classpath'. Could not download r8-1.6.84.jar (com.android.tools:r8:1.6.84) > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/r8/1.6.84/r8-1.6.84.jar'. > Premature end of Content-Length delimited message body (expected: 4,257,995; received: 2,097,136)

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        google()
        jcenter()
        maven {
            url 'http://storage.googleapis.com/r8-releases/raw'
        }
    }

    dependencies {
         classpath 'com.android.tools:r8:1.6.84'
      //  classpath 'com.android.tools:r8:1.4.57'
        classpath 'com.google.gms:google-services:4.3.3'
        classpath 'com.android.tools.build:gradle:4.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.android.tools.build:gradle:4.0.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"

    project.evaluationDependsOn(':app')

    afterEvaluate {project ->
        if (project.hasProperty("android") && project.property("android").compileSdkVersion.equals("android-R")) {
            android {
                compileSdkVersion 30
            }
        }
    }
}

Full Error message here:

• What went wrong: A problem occurred configuring root project 'android'.

Could not resolve all artifacts for configuration ':classpath'. Could not download r8-1.6.84.jar (com.android.tools:r8:1.6.84) > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/r8/1.6.84/r8-1.6.84.jar'. > Premature end of Content-Length delimited message body (expected: 4,257,995; received: 2,097,136) Could not download bundletool-0.13.2.jar (com.android.tools.build:bundletool:0.13.2) > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/bundletool/0.13.2/bundletool-0.13.2.jar'. > Premature end of Content-Length delimited message body (expected: 32,326,603; received: 2,359,280) Could not download builder-4.0.0.jar (com.android.tools.build:builder:4.0.0) > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/builder/4.0.0/builder-4.0.0.jar'. > Premature end of Content-Length delimited message body (expected: 9,052,896; received: 4,456,416)

• 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

BUILD FAILED in 13m 48s Exception: Gradle task assembleDebug failed with exit code 1

Answer 1

Have you tried running flutter clean and flutter pub get ? This usually solves common build errors. If that didn't solve the issue, you can rebuild the Flutter project's /android folder by deleting it and running flutter create --platform=android [PROJECT_PATH] to generate the Android project again.