Linux或Mac首次运行Android Studio，报如下的错误：

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 28.0.2
To 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
...

错误提示没有接受Licence，在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

然后一路Y。

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)? y

1/5: License android-googletv-license:

Terms and Conditions

...

Accept? (y/N): y
All SDK package licenses accepted