android studio 生成的apk有版本，有时间标识_android studio显示打出的apk时间-优快云博客

本文链接：https://blog.youkuaiyun.com/cau_eric/article/details/89016507

本文介绍如何在Gradle构建脚本中正确配置Android应用的版本号，避免使用已废弃的API导致的问题，并展示了如何生成包含日期的时间戳版本号。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

android {
  ...
    android.applicationVariants.all { variant ->
        variant.outputs.all { output ->
            def outputFile = output.outputFile
            if (outputFile != null && outputFile.name.endsWith('.apk')) {
                outputFileName =             
   defaultConfig.applicationId.subSequence(defaultConfig.applicationId.lastIndexOf(".") 
   + 1, defaultConfig.applicationId.length()) + "-v" + defaultConfig.versionCode + "-" + 
   releaseTime() + ".apk"
            }
        }
    }
 ...
}

def releaseTime() {
    return new Date().format("yyyyMMdd_HHmmss", TimeZone.getTimeZone("GMT+8:00"))
}

//新版的gradle会有以下报错

WARNING: API 'variantOutput.getPackageApplication()' is obsolete and has been replaced with 'variant.getPackageApplicationProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variantOutput.getPackageApplication(), use -Pandroid.debug.obsoleteApi=true on the command line to display more information.
Affected Modules: app

没有什么影响，参考：https://blog.youkuaiyun.com/yuzhiqiang_1993/article/details/86576718

但是生成的版本号会是null，例如：vnull

解决办法，将 defaultConfig 修改为 varian

参考：https://www.cnblogs.com/blogs-of-lxl/p/10306145.html

最终版本：

android.applicationVariants.all { variant ->
        variant.outputs.all {
            outputFileName = defaultConfig.applicationId.subSequence(defaultConfig.applicationId.lastIndexOf(".")
                    + 1, defaultConfig.applicationId.length()) + "-v${variant.versionName}-${releaseTime()}.apk"
        }
    }