Assuming you have installed Android SDK, (in my case, I don’t have Android Market installed)

  1. Download APK from internet, save to computer
  2. Copy APK from computer to emulator’s SD card using adb command. (Make sure Android emulator is running)
    android-sdk-windows/platform-tools/adb push file.apk /sdcard/
  3. Open browser in Android, point to file:///sdcard/file.apk
  4. Choose ‘Install this app’