title: Expo start Couldn't adb reverse: adb.exe: error: device offline
body: <p>For using Expo start react-native project, the adb connection error occurs.
  Need to connect the Expo local and Android studio emulator
  Console error is something like that.</p>
  <pre><code>To run the app, choose one of:
  › Scan the QR code above with the Expo app (Android) or the Camera app (iOS).
  › Press a for Android emulator, or w to run on web.
  › Press e to send a link to your phone with email.
  
  Press ? to show a list of all available commands.
  Couldn't adb reverse: adb.exe: error: device offline
  Couldn't start project on Android: Error running adb: adb.exe: device offline
  Couldn't adb reverse: adb.exe: error: device offline
  Couldn't start project on Android: Error running adb: adb.exe: device offline
  </code></pre>
  <p>Somebody help me</p>