Android Studio Gradle Build 失败 - 要求不存在的 sdk 版本 [英] Android Studio Gradle Build failing - asking for a sdk version that doesn't exist

问题描述

24 小时前我的项目完美构建，没有错误.无需更改单个代码，当我恢复工作时它将不再构建.现在检查旧的工作提交会产生相同的错误.

24 hours ago my project built perfectly, no errors. Without changing a single piece of code, it will no longer build when I have resumed work. Checking out to older working commits now produces the same error.

这些是我得到的错误代码:

These are the error codes I get:

Information:Gradle tasks [assemble]
Error:(9, 5) error: resource android:attr/dialogCornerRadius not found.
/home/liam/.gradle/caches/transforms-1/files-1.1/appcompat-v7-28.0.0-alpha1.aar/536e4dd78846259cf8bef0fd6a3ea0e6/res/values/values.xml

我认为这是由于 Android P 发布和我的 Android Studio 自动升级或类似的原因造成的.这将解释为什么有效的旧提交会出现相同的错误.这将是一个非常新的问题，这将解释为什么我还没有找到解决方案.

I think that this has been caused by Android P being released and my Android Studio automatically upgrading or something like that. Which would explain why old commits that worked get this same error. This would be a very new issue, which would explain why I cannot find a solution to it yet.

搜索这些错误代码会导致类似的问题，该问题已通过更改 gradle 构建文件中的 SDK 版本解决.我的问题与此不同，因为更改为 SDK 28(我很确定 28 甚至不存在)会导致 android studio 说此包不可用/不存在可供下载.

Searching these error codes leads to a similar issue that was resolved by changing the SDK version in the gradle build file. My problem differs from this because changing to SDK 28 (I'm pretty sure 28 doesn't even exist) leads to android studio saying this package isn't available/doesn't exist for download.

如何找到问题 Android SDK 3.0 Error:(9, 5) error: resource android:attr/colorError not found

点击第一个提到的错误代码会打开一个名为 v28/values-v28.xml 的文件.

Clicking on the first mentioned error codes leads to a file called v28/values-v28.xml being opened.

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Base.Theme.AppCompat" parent="Base.V28.Theme.AppCompat"/>
    <style name="Base.Theme.AppCompat.Light" parent="Base.V28.Theme.AppCompat.Light"/>
    <style name="Base.V28.Theme.AppCompat" parent="Base.V26.Theme.AppCompat">
        <!-- We can use the platform styles on API 28+ -->
        <item name="dialogCornerRadius">?android:attr/dialogCornerRadius</item>
    </style>
    <style name="Base.V28.Theme.AppCompat.Light" parent="Base.V26.Theme.AppCompat.Light">
        <!-- We can use the platform styles on API 28+ -->
        <item name="dialogCornerRadius">?android:attr/dialogCornerRadius</item>
    </style>
</resources>

这是我的 gradle 文件:

Here are my gradle files:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.timelord.timelord.timelord"
        minSdkVersion 24
        targetSdkVersion 26
        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 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support:design:+'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    implementation files('libs/joda-time-2.9.9.jar')
}

和

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

buildscript {

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'


        // 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
}

推荐答案

您的 build.gradle 中有带有 + 的设计库版本，这意味着它将下载最新版本.所以请将它设置为 26.1.0，它应该可以工作.支持 28 处于 alpha 阶段，昨天与新的 android P 预览版一起发布

You have the design lib version with + in your build.gradle which means it will download the latest version. So please set it to 26.1.0 and it should work. The support 28 is in alpha and was released yesterday with the new android P preview

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