Updated Working for Android (on Linux) (markdown)

Working-for-Android-(on-Linux).md

@@ -7,15 +7,20 @@ We need a set of tools in order to generate an .apk file. These tools are nothin
 You can get Java 8 JDK in multiple ways. I'm using OpenJDK at this guide. Follow the instructions at https://openjdk.java.net/ address to install OpenJDK.
 ## 2- Android SDK
 Android SDK has many packages. If you want to download all of them, you can go install [Android Studio](https://developer.android.com/studio/) and install the full package. But if you don't, you can download only the required ones manually by [Command Line Tools](https://developer.android.com/studio/#command-tools). To do that, start downloading the [Command Line Tools](https://developer.android.com/studio/#command-tools).
-* Decompress downloaded `sdk-tools-linux-...` into a folder named `android-sdk`.
-* From the Terminal, navigate to `android-sdk/tools/bin` and run the following commands:
+* Create an empty folder named `android-sdk`.
+* Decompress downloaded `sdk-tools-linux-...` into just created folder `android-sdk`.
+* From the Terminal, navigate to created `android-sdk` folder and run the following commands:
 
 ```
-./sdkmanager --update
-./sdkmanager --list
-./sdkmanager --install "build-tools;28.0.1"
-./sdkmanager --install platform-tools
-./sdkmanager --install "platforms;android-22"
+mv -v cmdline-tools tools
+export ANDROID_SDK=$(pwd)
+cd tools/bin
+./sdkmanager --update --sdk_root=$ANDROID_SDK
+./sdkmanager --list --sdk_root=$ANDROID_SDK
+./sdkmanager --install "build-tools;28.0.1" --sdk_root=$ANDROID_SDK
+./sdkmanager --install platform-tools --sdk_root=$ANDROID_SDK
+./sdkmanager --install "platforms;android-22" --sdk_root=$ANDROID_SDK
+unset ANDROID_SDK
 ```
 All required tools will be downloaded by these commands. You can check out package's description by looking at `./sdkmanager --list`.
 ## 3- Android NDK