未配置NDK使用SDK Manager下载首选的NDK版本为'21 .0.6113669'

如何解决未配置NDK使用SDK Manager下载首选的NDK版本为'21 .0.6113669'

我已经安装了NDK版本'21 .0.6113669'，但仍在尝试与Gradle Files同步项目时，出现以下错误：

NDK not configured. Download it with SDK manager. Preferred NDK version is '21.0.6113669'. 
Update NDK version to 21.0.6113669 and sync project

请在我的build.gradle下面找到

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.0'
    }
}

plugins {
  id "com.android.application"
}

android {
    compileSdkVersion project.properties.compileSdkVersion.toInteger()
    ndkVersion '21.0.6113669'
        
    dependencies {
        implementation "androidx.annotation:annotation:1.1.0"
        implementation "androidx.viewpager:viewpager:1.0.0"
        implementation "androidx.drawerlayout:drawerlayout:1.1.0"
        implementation project(":terminal-view")
    }

    defaultConfig {
        applicationId "com.termux"
        minSdkVersion project.properties.minSdkVersion.toInteger()
        targetSdkVersion project.properties.targetSdkVersion.toInteger()
        versionCode 101
        versionName "0.101"

        externalNativeBuild {
            ndkBuild {
                cFlags "-std=c11","-Wall","-Wextra","-Werror","-Os","-fno-stack-protector","-Wl,--gc-sections"
            }
        }

        ndk {
            abiFilters 'x86','x86_64','armeabi-v7a','arm64-v8a'
        }

    }

    signingConfigs {
        debug {
            storeFile file('dev_keystore.jks')
            keyAlias 'alias'
            storePassword 'xrj45yWGLbsO7W0v'
            keyPassword 'xrj45yWGLbsO7W0v'
        }
    }

    buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
        }

        debug {
            signingConfig signingConfigs.debug
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    externalNativeBuild {
        ndkBuild {
            path "src/main/cpp/Android.mk"
        }
    }

    testOptions {
        unitTests {
            includeAndroidResources = true
        }
    }
    buildToolsVersion '27.0.3'
}

dependencies {
    testImplementation 'junit:junit:4.13'
    testImplementation 'org.robolectric:robolectric:4.3.1'
}

task versionName {
  doLast {
    print android.defaultConfig.versionName
  }
}

def downloadBootstrap(String arch,String expectedChecksum,int version) {
    def digest = java.security.MessageDigest.getInstance("SHA-256")

    def localUrl = "src/main/cpp/bootstrap-" + arch + ".zip"
    def file = new File(projectDir,localUrl)
    if (file.exists()) {
        def buffer = new byte[8192]
        def input = new FileInputStream(file)
        while (true) {
            def readBytes = input.read(buffer)
            if (readBytes < 0) break
            digest.update(buffer,readBytes)
        }
        def checksum = new BigInteger(1,digest.digest()).toString(16)
        if (checksum == expectedChecksum) {
            return
        } else {
            logger.quiet("Deleting old local file with wrong hash: " + localUrl)
            file.delete()
        }
    }

    def remoteUrl = "https://bintray.com/termux/bootstrap/download_file?file_path=bootstrap-" + arch + "-v" + version + ".zip"
    logger.quiet("Downloading " + remoteUrl + " ...")

    file.parentFile.mkdirs()
    def out = new BufferedOutputStream(new FileOutputStream(file))

    def connection = new URL(remoteUrl).openConnection()
    connection.setInstanceFollowRedirects(true)
    def digestStream = new java.security.DigestInputStream(connection.inputStream,digest)
    out << digestStream
    out.close()

    def checksum = new BigInteger(1,digest.digest()).toString(16)
    if (checksum != expectedChecksum) {
        file.delete()
        //throw new GradleException("Wrong checksum for " + remoteUrl + ": expected: " + expectedChecksum + ",actual: " + checksum)
        throw new FileNotFoundException("Wrong checksum for " + remoteUrl + ": expected: " + expectedChecksum + ",actual: " + checksum)
    }
}

clean {
    doLast {
        def tree = fileTree(new File(projectDir,'src/main/cpp'))
        tree.include 'bootstrap-*.zip'
        tree.each { it.delete() }
    }
}

task downloadBootstraps(){
    doLast {
        def version = 30
        downloadBootstrap("aarch64","7a90034285c614d23fa450547a5e2aec77d4242c9891ad662bf0c6fd3bd7ef4e",version)
        downloadBootstrap("arm","f030869ce9a43f84d88560d7ac5153ee4f7e517bca0b37ab01df3e1acba0fe37",version)
        downloadBootstrap("i686","1ea9b63f21602231140d58a5545cfbc6bc2ded56ef2b3c31cba2759d913eef00",version)
        downloadBootstrap("x86_64","a50eb8a4dd02b7898bbd4a9653a25c14b56c1737409ce7f64110fd33c2c69382",version)
    }
}

//buildscript {
//    dependencies {
//        classpath 'com.android.tools.build:gradle:4.0.0'
//    }
//}

afterEvaluate {
  android.applicationVariants.all { variant ->
    variant.javaCompileProvider.get().dependsOn(downloadBootstraps)
  }
}

我已经从笔记本电脑中删除了.gradle文件夹并重新安装，还尝试了Android Studio中的选项“使缓存无效/重新启动”选项，但问题仍然没有解决。 任何建议都将受到欢迎。

解决方法

这是build.gradle目录中的Android！您必须添加

android {
    ndkVersion '21.3.6528147'
...

到build.gradle中的Android/app，然后从Android / build.gradle中删除ndk version ...

我用build.gradle代码编写的简单Android/app：

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

android {
    compileSdkVersion 30
    ndkVersion '21.0.6113669'
    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    lintOptions {
        disable 'InvalidPackage'
        checkReleaseBuilds false
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.test.test"
        minSdkVersion 16
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    signingConfigs {
        release {
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
            storePassword keystoreProperties['storePassword']
        }
    }
    buildTypes {
        release {
            signingConfig signingConfigs.release
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}