生成失败-找不到androidx.生命周期:编译器:2.2.0

Question

我是安卓系统的新手，在过去的两天里一直在努力构建。我收到以下消息

Build failed
Could not find androidx.lifecycle:compiler:2.2.0.
Searched in the following locations:
- https://dl.google.com/dl/android/maven2/androidx/lifecycle/compiler/2.2.0/compiler-2.2.0.pom
- https://jcenter.bintray.com/androidx/lifecycle/compiler/2.2.0/compiler-2.2.0.pom
Required by:   project :app

我更新了我的studio和gradle插件以及依赖关系的版本，但似乎都不起作用。我正在使用Gradle插件：4.0.1和Gradle:6.1.1我的项目等级如下

buildscript {

repositories {
google()
maven { url 'https://maven.google.com' }
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:4.0.1'          
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

我的应用程序等级如下

apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.xxxx.xxxxxx"
minSdkVersion 19
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.recyclerview:recyclerview:1.1.0'
implementation 'com.google.android.material:material:1.2.0-alpha04'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'androidx.appcompat:appcompat:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
def room_version = "2.2.0"
def lifecycle_version = "2.2.0"
implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"
// ViewModel
implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
// LiveData
implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
// Lifecycles only (without ViewModel or LiveData)
implementation "androidx.lifecycle:lifecycle-runtime:$lifecycle_version"
// Saved state module for ViewModel
implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"
// Annotation processor
annotationProcessor "androidx.lifecycle:compiler:$lifecycle_version"
// alternately - if using Java8, use the following instead of lifecycle-compiler
implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
// optional - RxJava support for Room
implementation "androidx.room:room-rxjava2:$room_version"
// Test helpers
testImplementation "androidx.room:room-testing:$room_version"
}

在idea.log中，我找到了

testKnownPluginVersionProvider - 'gradle' plugin missing from the offline Maven repo, will use default 4.0.1 

定期重复，渐变包装器属性文件如下

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https://services.gradle.org/distributions/gradle-6.1.1-all.zip

Answer 1

如果使用Java 8:，请删除以下行

annotationProcessor "androidx.lifecycle:compiler:$lifecycle_version"