title: Android Studio device list is stuck on Loading... Mac
body: <p>I recently upgraded Flutter and today I noticed that when connecting my physical Android device the system does recognize but device list is stuck on <code>Loading...</code> and only options are to open iOS Simulator or the two emulators I installed, but even if I start the emulators then are no available to select to run the app..
  I tried cleaning the cache a restarting Android Studio but didn't help..
  What can be happened, or what can I check to find where the problem is?</p>
  <p>Flutter doctor does see the phone dough.</p>
  <pre><code>[  +35 ms] [✓] Flutter (Channel master, 1.19.0-4.0.pre.73, on Mac OS X 10.13.6 17G65, locale it-IT)
  [   +1 ms]     • Flutter version 1.19.0-4.0.pre.73 at /Users/vinnytwice/Developer/flutter
  [        ]     • Framework revision 94b7ff241e (6 days ago), 2020-06-04 18:53:00 -0700
  [        ]     • Engine revision 859d892f1f
  [        ]     • Dart version 2.9.0 (build 2.9.0-13.0.dev 54adfeb93f)
  ⣽[  +73 ms] executing: pod --version
  [   +4 ms] List of devices attached
             3300f55e4cf61347       device usb:4250927104X product:a5xeltexx model:SM_A510F device:a5xelte transport_id:3
  [  +25 ms] /Users/vinnytwice/Library/Android/sdk/platform-tools/adb -s 3300f55e4cf61347 shell getprop                                                                                                        ⣻[  +52 ms] executing: /Users/vinnytwice/Library/Android/sdk/tools/bin/sdkmanager --licenses                                                                                                                  ⢿[ +123 ms] ro.hardware = samsungexynos7580                                                                                                                                                                   ⣟[ +990 ms] 1.8.1                                                                                                                                                                                             [ +521 ms] [✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
  [        ]     • Android SDK at /Users/vinnytwice/Library/Android/sdk
  [        ]     • Platform android-29, build-tools 29.0.2
  [        ]     • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
  [        ]     • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
  [        ]     • All Android licenses accepted.
  [   +2 ms] [!] Xcode - develop for iOS and macOS (Xcode 10.2.1)
  [        ]     • Xcode at /Applications/Xcode.app/Contents/Developer
  [        ]     • Xcode 10.2.1, Build version 10E1001
  [        ]     ✗ Flutter requires a minimum Xcode version of 11.0.0.
  [        ]       Download the latest version or update via the Mac App Store.
  [        ]     • CocoaPods version 1.8.1
  [   +2 ms] [✓] Chrome - develop for the web
  [        ]     • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
  [   +1 ms] [✓] Android Studio (version 3.5)
  [        ]     • Android Studio at /Applications/Android Studio.app/Contents
  [        ]     • Flutter plugin version 44.0.1
  [        ]     • Dart plugin version 191.8593
  [        ]     • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
  [   +1 ms] [✓] Connected device (3 available)
  [        ]     • SM A510F   • 3300f55e4cf61347 • android-arm    • Android 7.0 (API 24)
  [        ]     • Web Server • web-server       • web-javascript • Flutter Tools
  [        ]     • Chrome     • chrome           • web-javascript • Google Chrome 83.0.4103.97
  [        ] ! Doctor found issues in 1 category.
  
  </code></pre>
  <h1>flutter run --verbose:</h1>
  <pre><code>[ +246 ms] executing: [/Users/vinnytwice/Developer/flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
  [  +69 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
  [   +1 ms] daddc914c7629ee00117cdffb724c5bee8cbe97d
  [   +1 ms] executing: [/Users/vinnytwice/Developer/flutter/] git tag --contains HEAD
  [ +300 ms] Exit code 0 from: git tag --contains HEAD
  [   +5 ms] executing: [/Users/vinnytwice/Developer/flutter/] git describe --match *.*.*-*.*.pre --first-parent --long --tags
  [  +32 ms] Exit code 0 from: git describe --match *.*.*-*.*.pre --first-parent --long --tags
  [        ] 1.19.0-5.0.pre-57-gdaddc914c
  [  +17 ms] executing: [/Users/vinnytwice/Developer/flutter/] git rev-parse --abbrev-ref --symbolic @{u}
  [  +15 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
  [        ] origin/master
  [        ] executing: [/Users/vinnytwice/Developer/flutter/] git ls-remote --get-url origin
  [  +14 ms] Exit code 0 from: git ls-remote --get-url origin
  [        ] https://github.com/flutter/flutter.git
  [  +94 ms] executing: [/Users/vinnytwice/Developer/flutter/] git rev-parse --abbrev-ref HEAD
  [  +16 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
  [        ] master
  [   +9 ms] executing: sw_vers -productName
  [  +19 ms] Exit code 0 from: sw_vers -productName
  [        ] Mac OS X
  [        ] executing: sw_vers -productVersion
  [  +18 ms] Exit code 0 from: sw_vers -productVersion
  [        ] 10.13.6
  [        ] executing: sw_vers -buildVersion
  [  +19 ms] Exit code 0 from: sw_vers -buildVersion
  [   +1 ms] 17G65
  [  +68 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
  [   +4 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
  [  +29 ms] executing: /Users/vinnytwice/Library/Android/sdk/platform-tools/adb devices -l
  [  +16 ms] executing: /usr/bin/xcode-select --print-path
  [  +14 ms] Exit code 0 from: /usr/bin/xcode-select --print-path
  [        ] /Applications/Xcode.app/Contents/Developer
  [   +1 ms] executing: /usr/bin/xcodebuild -version
  [ +160 ms] Exit code 0 from: /usr/bin/xcodebuild -version
  [        ] Xcode 10.2.1
             Build version 10E1001
  [   +4 ms] Xcode not found. Run 'flutter doctor' for more information.
  [  +66 ms] List of devices attached
  [  +10 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
  [   +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
  [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
  [ +115 ms] No supported devices connected.
  [  +72 ms] The following devices were found, but are not supported by this project:
             Web Server • web-server • web-javascript • Flutter Tools
             Chrome     • chrome     • web-javascript • Google Chrome 83.0.4103.97
             If you would like your app to run on web, consider running `flutter create .` to generate projects for these platforms.
             
  [  +25 ms] &quot;flutter run&quot; took 542ms.
  [  +41 ms] 
             #0      throwToolExit (package:flutter_tools/src/base/common.dart:14:3)
             #1      RunCommand.validateCommand (package:flutter_tools/src/commands/run.dart:337:7)
             &lt;asynchronous suspension&gt;
             #2      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:805:11)
             &lt;asynchronous suspension&gt;
             #3      FlutterCommand.run.&lt;anonymous closure&gt; (package:flutter_tools/src/runner/flutter_command.dart:722:33)
             &lt;asynchronous suspension&gt;
             #4      FlutterCommand.run.&lt;anonymous closure&gt; (package:flutter_tools/src/runner/flutter_command.dart)
             #5      AppContext.run.&lt;anonymous closure&gt; (package:flutter_tools/src/base/context.dart:150:29)
             #6      _rootRun (dart:async/zone.dart:1190:13)
             #7      _CustomZone.run (dart:async/zone.dart:1093:19)
             #8      _runZoned (dart:async/zone.dart:1630:10)
             #9      runZoned (dart:async/zone.dart:1550:10)
             #10     AppContext.run (package:flutter_tools/src/base/context.dart:149:18)
             #11     FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:712:20)
             #12     CommandRunner.runCommand (package:args/command_runner.dart:197:27)
             #13     FlutterCommandRunner.runCommand.&lt;anonymous closure&gt; (package:flutter_tools/src/runner/flutter_command_runner.dart:332:21)
             #14     _rootRunUnary (dart:async/zone.dart:1198:47)
             #15     _CustomZone.runUnary (dart:async/zone.dart:1100:19)
             #16     _FutureListener.handleValue (dart:async/future_impl.dart:143:18)
             #17     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:696:45)
             #18     Future._propagateToListeners (dart:async/future_impl.dart:725:32)
             #19     Future._completeWithValue (dart:async/future_impl.dart:529:5)
             #20     _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:40:15)
             #21     _completeOnAsyncReturn (dart:async-patch/async_patch.dart:311:13)
             #22     FlutterVersion.checkFlutterVersionFreshness (package:flutter_tools/src/version.dart)
             #23     _rootRunUnary (dart:async/zone.dart:1198:47)
             #24     _CustomZone.runUnary (dart:async/zone.dart:1100:19)
             #25     _FutureListener.handleValue (dart:async/future_impl.dart:143:18)
             #26     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:696:45)
             #27     Future._propagateToListeners (dart:async/future_impl.dart:725:32)
             #28     Future._completeWithValue (dart:async/future_impl.dart:529:5)
             #29     Future._asyncCompleteWithValue.&lt;anonymous closure&gt; (dart:async/future_impl.dart:567:7)
             #30     _rootRun (dart:async/zone.dart:1190:13)
             #31     _CustomZone.run (dart:async/zone.dart:1093:19)
             #32     _CustomZone.runGuarded (dart:async/zone.dart:997:7)
             #33     _CustomZone.bindCallbackGuarded.&lt;anonymous closure&gt; (dart:async/zone.dart:1037:23)
             #34     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
             #35     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
             #36     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
             #37     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:169:5)
             
             
  [ +268 ms] ensureAnalyticsSent: 256ms
  [   +2 ms] Running shutdown hooks
  [        ] Shutdown hooks complete
  [   +1 ms] exiting with code 1
  </code></pre>