将项目从Android Studio版本2转换到版本3-配置问题

Question

我对android项目的配置有问题。我把Android Studio AS从v2升级到了v3，遇到了很多问题。我按照文档中的原样更改了gradle : gradle-wrapper、gradle插件版本、存储库google或jcenter而不是maven。请看配置:我有一个名为mytwayapp的项目，它有build.gradle：

  buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.0'
        //{ url "http://jcenter.bintray.com/" }
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

    dependencies {
        implementation project(':app')
    }

接下来，我使用build.gradle创建了一个名为app的模块：

apply plugin: 'com.android.application'


android {
    compileSdkVersion 23
    buildToolsVersion '27.0.3'
//    buildToolsVersion "26.0.2"

    defaultConfig {
        applicationId "com.mytway.activity.registerformactivity"
        minSdkVersion 21
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    dexOptions {
        preDexLibraries = false;
        javaMaxHeapSize "2g"
    }
    sourceSets { main { assets.srcDirs = ['src/main/assets', 'src/main/res/assets/fonts'] } }

    testOptions {
        unitTests.returnDefaultValues = true
    }

    lintOptions {
        abortOnError false
    }


}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.google.android.gms:play-services:8.4.0'
    implementation 'com.android.support:appcompat-v7:23.1.1'
    implementation 'com.android.support:support-v4:23.1.1'
    implementation 'com.android.support:support-v13:23.1.1'
    implementation 'joda-time:joda-time:2.9.4'
    implementation files('../libs/MPAndroidChart-v3.0.1.jar')

    //to remove when Dex is over memory
    testImplementation group: 'org.powermock', name: 'powermock-api-easymock', version: '1.6.6'
    testImplementation 'org.powermock:powermock-mockito-release-full:1.5.4'
    testImplementation 'org.powermock:powermock-api-mockito:1.6.6'
    testImplementation 'org.powermock:powermock-module-junit4:1.5.1'
    testImplementation 'org.mockito:mockito-all:1.9.5'
    testImplementation 'org.powermock:powermock-mockito-release-full:1.6.1'
    testImplementation 'org.easymock:easymock:3.1'
//    testCompile files('build/lib/powermock-easymock-1.6.6-full.jar') 
    testImplementation 'junit:junit:4.12'
}

接下来是gradle-wrapper：

#Thu Mar 16 20:14:22 CET 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip

问题:我无法与gradle同步，如果我尝试，则错误:无法初始化类com.android.tools.idea.gradle.eclipse.GradleImport

当我尝试从cmd安装时，然后：

./gradlew install -x test

FAILURE: Build failed with an exception.

* Where:
Build file 'C:\android\BitBucket\mytwayapp\build.gradle' line: 22

* What went wrong:
A problem occurred evaluating root project 'mytwayapp'.
> Could not find method implementation() for arguments [project ':app'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

* 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 2s

这意味着问题出在主build.gradle与":app“的依赖关系上，但它看起来不错。我尝试了刷新、重建、失效、重启，但仍然有问题。项目结构看起来很奇怪，这是一个屏幕：

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答:下面的提示不起作用，我将Android Studio从3.4降级到3.1，并在一些化妆品更改后编译。耽误您时间，实在对不起。

Answer 1

尝试更新到最新版本：

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

和build.gradle中的buildToolsVersion

Answer 2

尝试在app gradle文件中使用相同的数字前缀buildToolsVersion来更改de compileSDkVersion和targetSdkVersion，如下所示：

android {
    compileSdkVersion 27
    buildToolsVersion '27.0.3'
    //    buildToolsVersion "26.0.2"
    defaultConfig {
        applicationId "com.mytway.activity.registerformactivity"
        minSdkVersion 21
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
}