android - “Gradle error after Android Studio update”

Question

今天，我将Android Studio更新到了3.0版
之后，我无法成功构建项目。
我收到这些错误:

Unable to resolve dependency for ':app@release/compileClasspath': could not resolve com.android.support:appcompat-v7:27.0.1.

我尝试使用VPN或代理等，但是它们都不起作用。
这是漫长的一天。我希望你能帮助我。

这是我的build.gradle(app):

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
compileSdkVersion 27
defaultConfig {
    applicationId "ir.hetbo.kotlin_tutorial"
    minSdkVersion 15
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:27.0.1'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
}

这是build.gradle(project):

// Top-level build file where you can add configuration options common to 
all sub-projects/modules.

buildscript {
ext.kotlin_version = '1.1.60'
repositories {
    google()
    jcenter()
    maven {
        url "https://maven.google.com"
    }
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.0'
    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
}
}

allprojects {
repositories {
    google()
    jcenter()
    maven {
        url "https://maven.google.com"
    }
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}

我做了很多事情来修复它，但是每次失败。

我使用gradle 4.3.1

这是gradle包装器属性:

#Sat Nov 18 10:16:45 IRST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-all.zip

Answer 1

具有 gradle 4.1 和类路径的新功能'com.android.tools.build:gradle:3.0.0'

distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-4.1-all.zip

这是build.gradle(project):

// Top-level build file where you can add configuration options common to 
all sub-projects/modules.

buildscript {
ext.kotlin_version = '1.1.60'
repositories {
    google()
    jcenter()

}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.0'
    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
}
}

allprojects {
repositories {
    google()
    jcenter()

}
}

task clean(type: Delete) {
delete rootProject.buildDir
}