Linux或Mac首次运行Android Studio，报了如下的错误：

ERROR: Failed to install the following Android SDK packages as some licences have not been accepted.   platforms;android-25 Android SDK Platform 25   build-tools;28.0.2 Android SDK Build-Tools 28.0.2To build this project, accept the SDK license agreements and install the missing components using the Android Studio SDK Manager.Alternatively, to transfer the license agreements from one workstation to another, see http://d.android.com/r/studio-ui/export-licenses.html...

错误提示，我电脑没有接受Licence，widnows下不存在这种报错，因为在点击"下一步"的过程中勾选了"I Agree"。Linux和Mac下面稍有不同，需要切换到SDK的Tools文件夹下，执行：

$ cd /home/xiaotang/Android/Sdk/tools/bin$ ./sdkmanager --licenses

然后，接着一直输入：Y Y ... 就可以了。

Warning: File /home/xiaotang/.android/repositories.cfg could not be loaded.     5 of 5 SDK package licenses not accepted. 100% Computing updates...             Review licenses that have not been accepted (y/N)? y1/5: License android-googletv-license:---------------------------------------Terms and Conditions...---------------------------------------Accept? (y/N): yAll SDK package licenses accepted

问题解决。