matic</strong> target mode in order to
  select an AVD. In this mode, ADT will select an AVD for the application in the following
  manner:</p>

  <ol>
    <li>If there's a device or emulator already running and its AVD configuration meets the
    requirements of the application's build target, the application is installed and run upon
    it.</li>

    <li>If there's more than one device or emulator running, each of which meets the requirements
    of the build target, a "device chooser" is shown to let yo