Flutter install
1- install java JDK: https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
2- Install GIT: https://git-scm.com/download/win
3- Install android SDK:
- Download and install Android Studio.
- Start Android Studio, and go through the ‘Android Studio Setup Wizard’. This installs the latest Android SDK, Android SDK Command-line Tools, and Android SDK Build-Tools, which are required by Flutter when developing for Android.
Warning: In Android Studio 3.6 or later, you need to manually add the old version of the Android SDK Tools for Flutter to work. To do this:
- Open the Android Studio SDK Manager
- In the Android SDK tab, uncheck Hide Obsolete Packages
- Check Android SDK Tools (Obsolete)
The dialog below shows the appropriate settings: 
This is a known issue that will be addressed in an upcoming version of Flutter.
Set up your Android device
To prepare to run and test your Flutter app on an Android device, you’ll need an Android device running Android 4.1 (API level 16) or higher.
- Enable Developer options and USB debugging on your device. Detailed instructions are available in the Android documentation.
- Windows-only: Install the Google USB Driver.
- Using a USB cable, plug your phone into your computer. If prompted on your device, authorize your computer to access your device.
- In the terminal, run the flutter devices command to verify that Flutter recognizes your connected Android device. By default, Flutter uses the version of the Android SDK where your adb tool is based. If you want Flutter to use a different installation of the Android SDK, you must set the ANDROID_HOME environment variable to that installation directory.
Set up the Android emulator
To prepare to run and test your Flutter app on the Android emulator, follow these steps:
- Enable VM acceleration on your machine.
- Launch Android Studio > Tools > Android > AVD Manager and select Create Virtual Device. (The Android submenu is only present when inside an Android project.)
- Choose a device definition and select Next.
- Select one or more system images for the Android versions you want to emulate, and select Next. An x86 or x86_64 image is recommended.
- Under Emulated Performance, select Hardware - GLES 2.0 to enable hardware acceleration.
-
Verify the AVD configuration is correct, and select Finish.
For details on the above steps, see Managing AVDs.
- In Android Virtual Device Manager, click Run in the toolbar. The emulator starts up and displays the default canvas for your selected OS version and device.
4- Install flutter SDK:
-
Download the following installation bundle to get the latest stable release of the Flutter SDK:
flutter_windows_v1.12.13+hotfix.9-stable.zip
For other release channels, and older builds, see the SDK archive page.
-
Extract the zip file and place the contained flutter in the desired installation location for the Flutter SDK (for example, C:\src\flutter; do not install Flutter in a directory like C:\Program Files\ that requires elevated privileges).
If you don’t want to install a fixed version of the installation bundle, you can skip steps 1 and 2. Instead, get the source code from the Flutter repo on GitHub, and change branches or tags as needed. For example:
C:\src>git clone https://github.com/flutter/flutter.git -b stable
You are now ready to run Flutter commands in the Flutter Console!
Update your path
If you wish to run Flutter commands in the regular Windows console, take these steps to add Flutter to the PATH environment variable:
- From the Start search bar, enter ‘env’ and select Edit environment variables for your account.
- Under User variables check if there is an entry called Path:
- If the entry exists, append the full path to flutter\bin using ; as a separator from existing values.
- If the entry doesn’t exist, create a new user variable named Path with the full path to flutter\bin as its value.
Note that you have to close and reopen any existing console windows for these changes to take effect.