I am getting error "cmdline-tools component is missing" after installing Flutter and Android Studio... I added the Android SDK. How can I solve them?

Android toolchain - I develop for Android devices (Android SDK version 30.0.3):

X cmdline-tools component is missing
  Run `path/to/sdkmanager --install "cmdline-tools;latest"`
  See https://developer.android.com/studio/command-line for more details.

Solution 1:

The solution for me was opening Android Studio and going to SDK Manager, switch to the SDK Tools tab and check Android SDK Command-line Tools (latest).

Don't forget to add to your PATH the tools and platform-tools folder that are inside your SDK.

Solution 2:

Android SDK Manager screenshot on Windows

Please see the attached screenshot for installing tools from SDK Manager.

Solution 3:

My solution process is as follows:

1. ~/Library/Android/sdk/tools/bin/sdkmanager --install "cmdline-tools;latest"

   Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
       at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
       at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
       at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
       at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
       at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
   Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
       at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
       at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
       at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
       ... 5 more
   

2. Install Android SDK Command-line Tools in Android Studio:

   Preferences → Appearance & Behavior → System Settings → Android SDK → SDK Tools → Android SDK Command-line Tools (latest)

3. flutter doctor

   Doctor summary (to see all details, run flutter doctor -v):
   [✓] Flutter (Channel stable, 2.5.0, on macOS 11.5.2 20G95 darwin-x64, locale zh-Hans-CN)
   [✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
   [✓] Xcode - develop for iOS and macOS
   [✓] Chrome - develop for the web
   [✓] Android Studio (version 2020.3)
   [✓] IntelliJ IDEA Ultimate Edition (version 2021.2)
   [✓] IntelliJ IDEA Ultimate Edition (version 2021.2)
   [✓] Connected device (2 available)
   
   • No issues found!
   

Solution 4:

1. Open SDK Manager from your Android Studio.
2. SDK Tools tab
3. Check Android SDK Command Line Tools as in the picture
4. Apply.
5. Then again run flutter doctor.

Solution 5:

If what flutter doctor said was something like:

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at /Users/<admin>/Library/Android/sdk
✗ cmdline-tools component is missing
  Run `path/to/sdkmanager --install "cmdline-tools;latest"`

The path/to/sdkmanager for me was:

/Users/<user>/Library/Android/sdk/tools/bin/sdkmanager

So what solved the whole thing for me was running:

/Users/<user>/Library/Android/sdk/tools/bin/sdkmanager --install "cmdline-tools;latest"