app、的build.gradle中添加如下代碼

private static String getBuildTime() {
    DateTimeFormatter dtf = DateTimeFormatter.ofPattern("EEEE d MMMM yyyy HH:mm:ss")
    LocalDateTime now = LocalDateTime.now()
    String dateTime = dtf.format(now)
    return "\"${dateTime}\""
}

在buildTypes里面添加這個變量指向這個方法

         buildConfigField "String", "BUILD_DATE", getBuildTime()

調用也很簡單

   tempTextView = view.findViewById(R.id.app_release_date);
        tempTextView.setText(BuildConfig.BUILD_DATE);