乍一看，您可能会认为这个问题在网上已经回答过几次了。然而，我在这里和其他地方找到的每篇文章都与将旧的Android项目导入到当今的Android Studio有关，其中一个或多个gradle配置文件已经存在于项目代码树中的一个或多个位置。
然而，在我的例子中，我有一个9年的Android项目，我想在今天的Android Studio中工作，我的项目***不包含任何与gradle相关的文件！！！***
我相信我在2014年最初开发这个项目时使用了IntelliJ或Eclipse。
有没有办法将一个***完全与gradle***无关的旧Android项目导入到今天的Android Studio中，然后成功地为现代版本的Android（Android 11或更高版本）构建它？
我意识到，我可能需要进行一些代码更改，以使旧代码（基于kitkat）在Android 11或更高版本下正常运行。我不是在询问此类代码更改。我只是想知道如何让今天的Android Studio成功导入我的旧项目。***然后***我将能够进行必要的代码更改。
请原谅我，如果我的在线搜索忽略了这个问题的答案。如果是这样，这样一个答案的指针将不胜感激。
提前感谢您的任何帮助和建议。
下面是我的项目中所有文件和目录的列表...

AndroidManifest.xml
    project.properties
    bin/
    bin/AndroidManifest.xml
    bin/classes
    bin/classes/us
    bin/classes/us/potam
    bin/classes/us/potam/hippo
    bin/classes/us/potam/hippo/experimental
    bin/res
    src/
    src/us
    src/us/potam
    src/us/potam/hippo
    src/us/potam/hippo/experimental
    src/us/potam/hippo/experimental/ThirdPartyBase64.java
    src/us/potam/hippo/experimental/ExperimentalSMSDBHelper.java
    src/us/potam/hippo/experimental/ExperimentalSMSBootReceiver.java
    src/us/potam/hippo/experimental/ExperimentalSMSMessage.java
    src/us/potam/hippo/experimental/ExperimentalSMSHandler.java
    src/us/potam/hippo/experimental/ExperimentalSMSObserver.java
    src/us/potam/hippo/experimental/ExperimentalSMSService.java
    src/us/potam/hippo/experimental/ExperimentalSMSDataSource.java
    src/us/potam/hippo/experimental/ExperimentalSMSMainActivity.java
    src/us/potam/hippo/experimental/ExperimentalUtils.java
    libs/
    proguard-project.txt
    gen/
    gen/us
    gen/us/potam
    gen/us/potam/hippo
    gen/us/potam/hippo/experimental
    gen/us/potam/hippo/experimental/BuildConfig.java
    gen/us/potam/hippo/experimental/R.java
    out/
    out/production
    out/production/ExperimentalSMSTrigger
    out/production/ExperimentalSMSTrigger/us
    out/production/ExperimentalSMSTrigger/us/potam
    out/production/ExperimentalSMSTrigger/us/potam/hippo
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/BuildConfig.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ThirdPartyBase64.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSService.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R$drawable.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSMainActivity$1.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalUtils.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSDBHelper.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ThirdPartyBase64$1.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R$layout.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSBootReceiver.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R$dimen.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSMainActivity.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R$id.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSHandler.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ThirdPartyBase64$OutputStream.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSHandler$1.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSMessage.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R$attr.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSDataSource.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/R$string.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ExperimentalSMSObserver.class
    out/production/ExperimentalSMSTrigger/us/potam/hippo/experimental/ThirdPartyBase64$InputStream.class
    .idea/
    .idea/workspace.xml
    .idea/misc.xml
    .idea/runConfigurations
    .idea/runConfigurations/ExperimentalSMS.xml
    .idea/.gitignore
    .idea/modules.xml
    .classpath
    res/
    res/values-v14
    res/layout
    res/layout/main_activity_screen.xml
    res/values-v11
    res/drawable-hdpi
    res/drawable-hdpi/experimental.png
    res/drawable
    res/drawable/experimental.png
    res/drawable-xhdpi
    res/drawable-xhdpi/experimental.png
    res/values
    res/values/dimens.xml
    res/values/strings.xml
    res/drawable-xxhdpi
    res/drawable-xxhdpi/experimental.png
    res/drawable-mdpi
    res/drawable-mdpi/experimental.png
    res/values-w820dp
    res/values-w820dp/dimens.xml
    res/drawable-ldpi
    res/drawable-ldpi/experimental.png
    .project
    .settings/
    .settings/org.eclipse.jdt.core.prefs
    ExperimentalSMSTrigger.iml
    assets/