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

1.浏览器打开AppleID网站，创建中国区Apple ID，完成登录验证。
https://appleid.apple.com/account#!&page=create

2.VPN番羽土啬，以便通过Apple的IP地址验证，登陆刚刚注册的新ID，将地区选“美国”，付款方式选"无"，广告去掉，继续到填写详细个人信息。

3.再打开 fakeaddressgenerator 网站，把自动创建的一个假地址，填在个人信息的账单地址，点击下一步完成。

Done，you have created a USA apple ID! Enjoy！^_^