Android 在代码中使用 Gradle Build 风格，就像 if 情况一样

使用Gradle Build风格在Android代码中进行构建

groovy
android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"
    defaultConfig {
        applicationId "com.example.myapp"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.3.0'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

groovy
task generateSigningKey(type: Exec) {
    commandLine 'keytool', '-genkeypair', '-alias', 'myalias', '-keyalg', 'RSA', '-keysize', '2048', '-validity', '10000', '-keystore', 'mykeystore.jks', '-storepass', 'mystorepass', '-keypass', 'mykeypass', '-dname', 'CN=My Name, OU=My Org, O=My Company, L=My City, S=My State, C=My Country'
}