Gradle android更新后同步错误（未指定compileSdkVersion）

Question

我有一个项目。它在更新程序版本 3.2.1 之前运行良好。当尝试同步 gradle 项目时，我遇到了一些错误，但我可以修复它。但我有一个问题，无法找到一种方法。这是我的 build.gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 28

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

buildToolsVersion '28.0.3'
useLibrary 'org.apache.http.legacy'

defaultConfig {
    applicationId "com.xxx.xxx"
    minSdkVersion 15
    targetSdkVersion 28
    multiDexEnabled true
    versionCode 7x
    versionName "1.0.7x"
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
packagingOptions {
    exclude 'META-INF/DEPENDENCIES'
    exclude 'META-INF/NOTICE'
    exclude 'META-INF/LICENSE'
    exclude 'META-INF/LICENSE.txt'
    exclude 'META-INF/NOTICE.txt'
}
configurations.all {
    resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.1'
    exclude group: 'com.squareup.okhttp3', module: 'okhttp'
}
lintOptions {
    checkReleaseBuilds false
}
}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', 
{
    exclude group: 'com.android.support', module: 'support-annotations'
})
implementation files('libs/json_simple-1.1.jar')
implementation('com.omertron:themoviedbapi:4.2') {
    exclude group: 'org.apache.httpcomponents', module: 'httpclient'
    exclude module: 'junit'
}
implementation 'com.android.support:multidex:1.0.3'
implementation files('libs/okhttp-3.8.1.jar')
implementation files('libs/okio-1.13.0.jar')
implementation 'de.hdodenhof:circleimageview:2.2.0'
implementation 'com.google.android.gms:play-services-places:16.0.0'
implementation 'com.android.support:appcompat-v7:28.0.0'
//noinspection UseOfBundledGooglePlayServices
implementation 'com.google.android.gms:play-services:12.0.1'
implementation 'com.googlecode.libphonenumber:libphonenumber:7.3.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.android.gms:play-services-maps:16.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.wang.avi:library:2.1.3'
implementation 'com.baoyz.swipemenulistview:library:1.3.0'
implementation 'com.oguzdev:CircularFloatingActionMenu:1.0.2'
implementation 'javax.mail:mail:1.5.0-b01'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
implementation 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
implementation 'com.android.support:support-v4:28.0.0'
implementation 'com.github.orangegangsters:swipy:1.2.3@aar'
implementation 'io.michaelrocks:libphonenumber-android:8.9.0'
implementation 'com.github.joielechong:countrycodepicker:2.1.5'
testImplementation 'junit:junit:4.12'
implementation files('libs/xxx.jar')
}

apply plugin: 'com.google.gms.google-services'

并且：

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

buildscript {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath 'com.google.gms:google-services:4.1.0'
    }
}

allprojects {
    apply plugin: 'com.android.application'
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
        maven{
            url "https://jitpack.io"
        }
        google()
    }
}

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

嗯，我发现这个： Gradle 同步失败: Cause: compileSdkVersion is not specified 但是，它已经无济于事了。那么，有人可以帮助我吗？

Answer 1

将targetSdkVersion更改为28并将所有compile更改为implementation
确保您的顶级 build.gradle 已配置正确的 google() 存储库。例如。
```
repositories {
    google() // be the first one. 
    jcenter()
}
```

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Gradle android更新后同步错误（未指定compileSdkVersion）

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