Android Studio:未找到构建变体错误 [英] Android Studio: No build variant found error

问题描述

我是android开发的新手，根据文档，我从零开始在网上购买的项目中进行开发，遇到一个错误，说未找到'app'的变体.检查构建文件，以确保至少存在一个变体.

i am new to android development, i started developing from scratch on a project i bought online, following the documentation, i encountered a error saying No variants found for 'app'. Check build files to ensure at least one variant exists.

这是build.gradle代码

Here is the build.gradle code

apply plugin: 'com.android.application'

android {
compileSdkVersion 29
buildToolsVersion "29.0.1"
defaultConfig {
    applicationId "com.app-10.app"
    minSdkVersion 23
    targetSdkVersion 29
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'com.google.android.material:material:1.0.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'androidx.vectordrawable:vectordrawable:1.0.1'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
// Third Party Libraries
//Glide library for image fetching from the web
implementation 'com.github.bumptech.glide:glide:4.9.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
//Material library for styling blocks
implementation 'com.google.android.material:material:1.0.0'
// Google Gson
implementation 'com.google.code.gson:gson:2.8.5'
// Retrofit
implementation 'com.squareup.retrofit2:retrofit:2.6.1'
implementation 'com.squareup.retrofit2:converter-gson:2.6.1'
// Android-SpinKit
implementation 'com.github.ybq:Android-SpinKit:1.4.0'

implementation files('libs/YouTubeAndroidPlayerApi.jar')

// gotev/android-upload-service
implementation "net.gotev:uploadservice:3.5.2"

//A fast circular ImageView perfect for profile images
implementation 'de.hdodenhof:circleimageview:3.0.1'

implementation 'org.apache.commons:commons-io:1.3.2'

}

推荐答案

我刚刚解决了类似的问题:

I have just solved the same issue like this:

工具->SDK Manager

验证是否已选中用于 Android 10.0 的SDK平台程序包(具有 API级别29 的程序包，就像您在gradle文件中定义的一样).如果没有，请检查并应用更改.接受许可条款，安装软件包，然后 File->使用Gradle文件同步项目(或再次打开项目)

Verify that the SDK platform package for Android 10.0 (the one with API level 29, like you defined in your gradle file) is checked. If not, check it and apply changes. Accept the licence terms, install the package and then File -> Sync Project with Gradle Files (or open the project again)

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