在build.gradle中添加以下函数：
def releaseTime() {return new Date().format("yyyyMMddHHmm", TimeZone.getTimeZone("GMT+08:00"))
}
引用这个函数：
def fileName = "SecyrityPassDemo_${defaultConfig.versionName}_${releaseTime()}_${variant.productFlavors[0].name}.apk"
以下是一个完整的build.gradle文件
apply plugin: 'com.android.application'android {compileSdkVersion 26buildToolsVersion "26.0.2"defaultConfig {applicationId "com.pci.securigydemotest"minSdkVersion 19targetSdkVersion 26versionCode 1versionName "1.0"testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"signingConfigs {release {storeFile file("/APP_Keystore/keyless.keystore") //签名文件全路径storePassword "123456"keyAlias "keyless.keystore"keyPassword "123456"}}applicationVariants.all { variant ->variant.outputs.each { output ->def outputFile = output.outputFileif (outputFile != null && outputFile.name.endsWith('.apk')) {// 输出apk名称为Pos_v1.0.0_201709251000_.apkdef fileName = "SecyrityPassDemo_${defaultConfig.versionName}_${releaseTime()}_${variant.productFlavors[0].name}.apk"output.outputFile = new File(outputFile.parent, fileName)}}
}
productFlavors {Beta {manifestPlaceholders = [UMENG_CHANNEL_VALUE: "Beta"]}
}}buildTypes {release {signingConfig signingConfigs.releaseminifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'}}repositories {flatDir {dirs 'libs'}}
}
android {lintOptions {abortOnError false}}
def releaseTime() {return new Date().format("yyyyMMddHHmm", TimeZone.getTimeZone("GMT+08:00"))
}
dependencies {compile fileTree(dir: 'libs', include: ['*.jar'])androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {exclude group: 'com.android.support', module: 'support-annotations'})compile 'com.android.support:appcompat-v7:26.0.0-alpha1'compile(name: 'security-release', ext: 'aar')compile 'com.android.support.constraint:constraint-layout:1.0.2'testCompile 'junit:junit:4.12'}
