Android SDK manual download and offline install

First step

request 1 : Acsess to Internet by PC_1[download only]

request 2 : offline install by target PC_2

Install

・JDK download and install

・Android SDK [https://developer.android.com/studio/index.htm]
download [installer_r??.?.?-***.exe] and install by target PC

Second

targetPC\...\Android\android-sdk\

make folder [temp]

Thrid

Acsess and Download

Acsess

[http://dl-ssl.google.com/android/repository/repository-12.xml]
or
[http://dl-ssl.google.com/android/repository/repository-1?.xml]   ?= 3,4,5,...

[Ctrl + F] -> ".zip</"
↓
ex. tools_r25.1.7-windows.zip

Download

http://dl-ssl.google.com/android/repository/[Find name]

ex. [http://dl-ssl.google.com/android/repository/tools_r25.1.7-windows.zip]

Fourth

Download File to [temp]

targetPC\...\Android\android-sdk\temp

Fifth

SDK Manager.exe 

1.check download file name
2.check box
3.Install button
↓
complete.