I have faced this issue how can I fix it? (I have downloaded the android sdk tool ,adb file is present in platform-tools directory)
This is the result of flutter doctor:
C:\Windows\System32>flutter doctor -v
[√] Flutter (Channel stable, 1.22.2, on Microsoft Windows [Version 10.0.18363.1139], locale en-IN) • Flutter version 1.22.2 at C:\Users\deepak\src\flutter • Framework revision 84f3d28555 (2 weeks 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 30.0.2) • Android SDK at C:\Users\deepak\AppData\Local\Android\Sdk\tools\platform-tools • Platform android-30, build-tools 30.0.2 • ANDROID_HOME = C:\Users\deepak\AppData\Local\Android\Sdk\tools\platform-tools X Android SDK file not found: adb. • Try re-installing or updating your Android SDK, visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions. [!] Android Studio (version 4.1.0) • Android Studio at C:\Program Files\Android\Android Studio X Flutter plugin not installed; this adds Flutter specific functionality. X Dart plugin not installed; this adds Dart specific functionality. • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[!] Connected device ! No devices available
! Doctor found issues in 3 categories.