I read a lot of posts on the Internet and couldn't use it, so I finally tried it myself.
Can be decompressed into the specified folder (do not have Chinese in the path)
AndroidStudio can install the default options, and finally a box will pop up to tell you where the sdk directory is, you need to pay attention. (Catalogue can refer to the picture above)
D:/Unity/android-ndk-r16b
C:\Users\as\AppData\Local\Android\Sdk
After everything is configured, it can be packaged. Don't forget to fill in the relevant information (try not to have Chinese) .
2021/9/29_The personal test is valid, please leave a message if you have any questions.