title: How to set the default Android Emulator
body: <p>I am building an app with <a href="https://www.nativescript.org/" rel="nofollow">NativeScript</a>, where I run:</p>
  
  <pre><code>$ tns run android --emulator
  </code></pre>
  
  <p>to build the app and launch it in an emulator. When I do this, the default android emulator boots on my machine, which is unusably slow... </p>
  
  <p>In all the demos, they are using the Genymotion Emulator. I have installed this, but the NativeScript command still launches the default emulator. How do I get this to launch on the genymotion emulator?</p>
  
  <p>NB: I am using Windows 10</p>
  
  <h1>Update:</h1>
  
  <p>Even if I run the command with the Genymotion emulator running (and nothing else), I get the following log output and a new terminal window is opened running <code>android-sdk/tools/emulator-arm.exe</code></p>
  
  <blockquote>
    <p>BUILD SUCCESSFUL</p>
    
    <p>Total time: 11.959 secs</p>
    
    <p>Project successfully built.</p>
    
    <p>Using  C:\Users\George\Source\Repos\NativeScript-App\Bluetooth\platforms\android\build\outputs\apk\bluetoothdemo-debug.apk</p>
    
    <p>Starting Android emulator with image Xamarin_Android_API_23</p>
  </blockquote>
  
  <p>That looks as though it is referencing the emulator I had been using when I was developing with Xamarin. Any ideas where I can change that, or why that is being called?</p>