No Connected Devices Found in a Flutter App in Android Studio

android android-studio flutter dart avd

1,225

I finally solved the issue !!!

The following is steps I took to solve the problem:

Deleted Android Studio and all of related folders in the computer.

2-1. Create "src" folder in the C drive.

2-2. C:\src> git clone https://github.com/flutter/flutter.git -b stable

2-1. Type "Environment Variables" in the search box in your computer. 2-2. Under "System Variables > Path", add "C/src/flutter/bin".

Install "Android Studio"

3-1. Android Studio Intro Page > Configure > SDK Manager

3-2. Android Studio > Configure > Plugins > Browse Repositories (Install Dart & Flutter)

Go to "C:\src\flutter".

4-1. Run "flutter doctor --android-licenses"

4-2. Run "flutter channel beta"

4-3. Run "flutter upgrade"

Type "Environment Variables" in the search box in your computer.

5-2. Under "System Variables > Path", add the following:

C:\Users\USER\AppData\Local\Android\Sdk
C:\Users\USER\AppData\Local\Android\Sdk\platform-tools
C:\Users\USER\AppData\Local\Android\Sdk\tools

5-3. Under "System Variables", add the following:

Variable Name : "ANDROID_SDK_ROOT"
Variable Value : "C:\Users\USER\AppData\Local\Android\Sdk"

Go to "C:\src\flutter". 6-1. Run "flutter config --android-sdk C:\Users\USER\AppData\Local\Android\Sdk"

Open Android Studio.

7-1. Ctrl + Shift + Alt + S > Project Settings > Project > Change "<No SDK>" to the latest version.

7-2. Click "AVD Manager" icon.

7-3. Click "Launch this AVD in the emulato" icon

Success!

1,225

Author by

Lim

HTML, CSS(Sass), JavaScript(Three.js), TypeScript, React

Updated on December 25, 2022

Comments

Lim over 1 year
I read StackOverflow questions including the following ones:
BUT, I couldn't solve my issue....... :-(

My Flutter folder structure
- D:\src\flutter
- D:\src\sdk
My Project folder location : D:\__GitHub

Flutter SDK Setup Steps
- Add the following User environment variable
  - Variable Name : ANDROID_SDK_ROOT
  - Variable Value : D:\src\sdk
- Edit the "PATH" variable in the User enviroment variable
  - D:\src\flutter\bin;
  - %ANDROID_SDK_ROOT%\tools;
  - %ANDROID_SDK_ROOT%\platform-tools;
- Run flutter config --android-sdk [sdk location] in the terminal
- Run flutter doctor --android-licenses in the terminal
Launch an AVD in the emulator
- D:\__GitHub\netninja_flutter_app > flutter doctor --android-licenses
  - All SDK package licenses accepted
- D:\__GitHub\netninja_flutter_app > flutter emulator
  - Pixel_2_API_28
- D:\__GitHub\netninja_flutter_app > flutter emulator --launch Pixel_2_API_28
- When clicked, "Nothing here" shows up.
- When clicked, the following message pops up.
- When clicked, the following window shows up.
  - I added a virtual device.
Flutter Doctor
- D:\__GitHub\netninja_flutter_app > flutter doctor -v
  - [✓] Flutter (Channel stable, 1.22.2, on Microsoft Windows [Version 6.1.7601], locale en-US)
    - [✓] Flutter version 1.22.2 at D:\src\flutter
    - [✓] Framework revision 84f3d28555 (9 days ago), 2020-10-15 16:26:19 -0700
    - [✓] Engine revision b8752bbfff
    - [✓] Dart version 2.10.2
  - [✓] Android toolchain - develop for Android devices (Android SDK version 30.0.)
    - [✓] Android SDK at D:\src\sdk
    - [✓] Platform android-30, build-tools 30.0.2
    - [✓] ANDROID_SDK_ROOT = D:\src\sdk
    - [✓] Java binary at: D:_programs\Android\jre\bin\java
    - [✓] Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    - [✓] All Android licenses accepted
  - [✓] Android Studio (version 4.1.0)
    - [!] Flutter plugin not installed; this adds Flutter specific functionality
    - [!] Dart plugin not installed; this adds Dart specific functionality
    - [✓] Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
=> I installed "Dart" & "Flutter" plugins. So, I don't know why the error message says that those plugins are not installed. (This answer says just ignore the error message. So, I did so.)

QUESTION! How could I connect a device to this project?