Setting etc hosts on android emulator

On OSX, you probably need to have this env vars set for this to work:

export ANDROID_SDK=$HOME/Library/Android/sdk
export PATH=$ANDROID_SDK/emulator:$ANDROID_SDK/tools:$PATH

Create a custom host file for the emulator:

$ cat <local>/hosts
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1	localhost
255.255.255.255	broadcasthost
::1             localhost

# 10.0.2.2 is the emulator alias to the host loopback interface
10.0.2.2 lila.localhost assets.localhost

Push the file to emulator:

$ emulator -avd <avdname> -writable-system
$ adb root
$ adb remount
$ adb push <local>/hosts /etc/hosts

Check it is working:

$ adb shell
$ ping lila.localhost