Android Studio Arctic Fox 載入 AAR錯誤訊息: Build was configured to prefer settings repositories over project repositories but repository 'flatDir' was added by build file 'app/build.gradle')

想要導入AAR檔案做為Library使用時，在之前Android Studio Arctic Fox之前的版本，有一項必備的步驟是在app/build.gradle加入了下列的語法，讓libs目錄做為存放library的目錄

repositories {
    flatDir {
        dirs 'libs'
    }
}

但是如果是在Arctic Fox的版本，卻會發生以下的錯誤訊息：

A problem occurred evaluating project ':app'.

> Build was configured to prefer settings repositories over project repositories but repository 'flatDir' was added by build file 'app/build.gradle'

解決的方法：

1. 刪除本來的語法

repositories {
    flatDir {
        dirs 'libs'
    }
}

2. dependencies加上

implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])

參考資料：

https://huayig.cn/index.php/archives/101/