Android Application的Gradle说明

 //引入插件

 apply plugin: 'com.android.application'

 android {

     compileSdkVersion 29

     buildToolsVersion "29.0.0"

     defaultConfig {

         applicationId "com.example.myapplication"

         minSdkVersion 28

         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定义项目主源代码的依赖

     //配置依赖libs目录下的所有jar包

     implementation fileTree(dir: 'libs', include: ['*.jar'])

     //配置从中央仓库下载依赖jar包

     implementation 'androidx.appcompat:appcompat:1.0.2'

     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

     //testImplementation定义项目测试代码（test目录下的代码）的依赖

     testImplementation 'junit:junit:4.12'

     //androidTestImplementation定义androidTest目录下的代码依赖

     androidTestImplementation 'androidx.test:runner:1.2.0'

     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

 }