跪求大神解答ubuntu 编译vlc的过程中出现的failed to find android-23.。。。问题

[莜然]

vlc编译过程中出现了这个问题，，
（FAILURE: Build failed with an exception.

* Where:
Build file '/home/niuyan/vlc-android/api/build.gradle' line: 51

* What went wrong:
A problem occurred evaluating project ':api'.
> Failed to find target with hash string 'android-26' in: /opt/android-sdk-linux

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
）
不知道该怎么解决，求大神解答，感激不尽