任务执行失败:app:minifyReleaseWithR8‘8

Question

    > Task :app:minifyReleaseWithR8
AGPBI: {"kind":"warning","text":"Ignoring option: -dump","sources":[{"file":"/Users/merlin720/easycan/gitlab/android-app/app/proguard-rules.pro","position":{"startLine":47,"startColumn":0,"startOffset":1295,"endColumn":21,"endOffset":1316}}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Missing class: com.alipay.sdk.app.H5PayCallback","sources":[{}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Missing class: com.facebook.imagepipeline.request.BasePostprocessor","sources":[{}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Missing class: com.bun.miitmdid.core.IIdentifierListener","sources":[{}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Library class android.test.AndroidTestRunner extends program class junit.runner.BaseTestRunner","sources":[{}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Library class android.test.InstrumentationTestCase extends program class junit.framework.TestCase","sources":[{}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Library class android.test.AndroidTestCase extends program class junit.framework.TestCase","sources":[{}],"tool":"R8"}
AGPBI: {"kind":"warning","text":"Library class android.test.InstrumentationTestSuite extends program class junit.framework.TestSuite","sources":[{}],"tool":"R8"}

任务:应用程序:minifyReleaseWithR8 8失败

失败:生成失败，出现异常。

• 出错:任务执行失败:app:minifyReleaseWithR8 8‘。java.lang.NullPointerException (无错误消息)

当我将android更新到3.0和

dependencies {
    classpath 'com.android.tools.build:gradle:3.6.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files

    //美团多渠道
    classpath 'com.meituan.android.walle:plugin:1.1.6'
}

distributionUrl=https://services.gradle.org/distributions/gradle-5.6.4-all.zip

Answer 1

为我工作，加入格莱多

"implementation 'com.google.firebase:firebase-messaging:20.1.0'"

Answer 2

我也经历过同样的问题，目前无法找到任何解决办法。我现在又回到了Gradle插件3.5.3和gradle-5.4.1-all.zip。