无法识别 ADB 命令

Question

'adb' is not recognized as an internal or external command, operable program or batch file.

When setting ANDROID_SDK_ROOT environment variable adb command is not recognized.

%ANDROID_SDK_ROOT%\platform-tools  // adb not working

BUT when setting ANDROID_HOME adb starts working again.

%ANDROID_HOME%\platform-tools    // adb starts working.

What is wrong here? because it always shows warning on ANDROID_HOME variable that its deprecated.

UPDATE: Found Something Weird every time I restart my PC adb stops working. i have to save environment variable again to make it work.

Answer 1

ANDROID_HOME

Deprecated (in Android Studio), use ANDROID_SDK_ROOT instead.

ANDROID_SDK_ROOT

Installation directory of the Android SDK package.

Example: C:\AndroidSDK or ~/android-SDK/

ANDROID_NDK_ROOT Installation directory of the Android NDK package. (WITHOUT ANY SPACE)

Example: C:\AndroidNDK or ~/android-ndk/

ANDROID_SDK_HOME Location of SDK related data/user files.

Example: C:\Users\<USERNAME>\.android\ or ~/.android/

ANDROID_EMULATOR_HOME Location of emulator-specific data files.

Example: C:\Users\<USERNAME>\.android\ or ~/.android/

ANDROID_AVD_HOME Location of AVD-specific data files.

Example: C:\Users\<USERNAME>\.android\avd\ or ~/.android/avd/

JDK_HOME and JAVA_HOME Installation directory of JDK (aka Java SDK) package.

Note: This is used to run Android Studio(and other Java-based applications). Actually, when you run Android Studio, it checks for JDK_HOME then JAVA_HOME environment variables to use.