app-designer | design environment for creating customizing | User Interface library

Make sure Java 8 or higher is installed on the computer you plan to use. If it is not, download and install it. If you are using MacOSX, it may require special care and attention.See MacOSX Java install and MacOSX Java FAQ. You must use Version 12 or higher. To avoid directory path problems on Windows, we require npm version 6.9 or higher (generally npm will be bundled with NodeJS installer). Follow the instructions to install NodeJS. When installing on Windows you can use an automated NodeJS installer that uses Chocolatey. If you chose not to let the installer use Chocolatey to install a bunch of packages after installing NodeJS, you will need to ensure the location of the npm folder is added to the PATH variable of your system. If it is not, subsequent calls to access grunt will fail. For example: C:\Users\[username]\AppData\Roaming\npm. For instructions on modifying PATH, see the section at the bottom of this page called Add adb to your PATH For Windows. Instead of navigating to the location of Android SDK, navigate to the location of the npm folder. You can check if npm has been installed properly by typing npm --version in cmd or Powershell. After installing NodeJS, open a terminal (which you can do by clicking the spotlight in the top right corner of the screen, typing terminal, and clicking the program named Terminal) and type: $ npm --version. Warning: If a number is not displayed, but you instead receive a message that the command npm cannot be found, you will have to perform some additional configuration.
Java -> Java is required by the Android SDK (installation is described below).
Chrome -> Google's Chrome browser.
NodeJS -> a framework for easily building fast, scalable applications (installation is described below).
Grunt -> a task-based scripting environment (installation is described below).
Android SDK -> the software development kit for Android devices (installation is described below).
Browse to the Android SDK download page.
Scroll down on this page to the section labeled: Get just the command line tools. Note: You can alternatively install the full Android Studio if you so wish, in which case you should follow Google's instructions and then skip to step 6 of this guide.
Within that section, download the appropriate file(s) based on your operating system.
Accept the license agreement
Wait for the install of the SDK Tools to complete. Windows will need to manually run the .exe file previously downloaded to start installation. Note: There is no graphical tool for package management when using only the command line tools in either of Mac/Windows/Linux. You need to do a complete setup of Android Studio, more information in step 7.
Run the SDK Manager On Windows, it is available in the Start Menu under Android SDK Tools Warning: If the packages fail to install, you may need to run the Android SDK as an Administrator. On Mac/Linux, there is a sdkmanager CLI, more information can be found here.
Select the latest versions of the following packages (by checking their checkboxes): Android SDK Tools Android Platform-tools Android Build-tools -For this step on Mac/Linux, you'll need to make a complete setup of Android Studio. You may skip the steps 8-11 since, the above tools will be included in the Android Studio install you just did.
If extra packages are selected, you may unselect them before installation.
Click Install 3 packages in the lower right corner of the screen.
A licensing pop-up dialog will appear. Accept the license agreement(s) by selecting the Accept License option. If there are multiple licenses, you may need to select each license in the Packages window on this dialog and check this Accept License option for each of them before the Install button will become enabled.
Click the Install button on that dialog to begin the installation process.
Open a Windows File Explorer and navigate to the location of your Android SDK. This will typically be at one of: C:\Users\your_username\android-sdks or C:\ProgramFiles\Android\android-sdk or C:\Program Files (x86)\Android\android-sdk.
Navigate into the platform-tools folder.
Click in the file path at the top of the File Explorer window. The path will become aselected text string. Copy it into your copy-and-paste buffer.
Open the Start menu.
Right-click on Computer.
Choose Properties. The System Control Panel screen opens.
Select Advanced system setting on the left sidebar. The System Properties dialog opens.
Click on the Environment Variables... button at the bottom of the screen. The Envi-ronment Variables dialog opens.
Select the Path variable in the bottom System variables scroll window.
Click Edit...
Click into the Variable value text box.
Press your End key to move to the very end of this extremely long string.
Enter ’;’ and paste the platform-tools directory path after that semicolon.
Click on OK and exit all of the windows.
Verify that you have made the change by closing all cmd windows and open a new one(so it picks up the change), and type