Automatically create and resize Android screenshots from multiple devices on OSX

adb-screenshot

#!/bin/sh
#
# Take a screenshot from a connected device, resize it, and automatically save it
# to the OUTPUT_DIR. You should edit the output directory and desired maximal
# dimension of the resulting image. Each image will be output with [devicename]-[timestamp].
# If you have multiple devices connected this will take a screenshot from each device.
#
# This script is designed to work with OSX.
#

OUTPUT_DIR="/Users/victor.rendina/Desktop"
OUTPUT_MAX_DIMEN=640


if [ -z $(which adb) ]; then
  echo "$0 error: adb must be installed and in PATH."
  exit 1
fi

DEVICE_COUNT=$(adb devices | grep device$ | wc -l)

if [ $DEVICE_COUNT -eq 0 ]; then
    echo "No devices connected."
    exit 1
fi

for device in `adb devices | grep device$ | cut -f1`
do
    file="$device-$(date +'%s').png"
    remote="/sdcard/$file"
    local="$OUTPUT_DIR/$file"

    echo "Creating screenshot $file..."

    adb -s $device shell screencap -p $remote
    adb -s $device pull $remote $local > /dev/null
    adb -s $device shell rm $remote
    sips -Z $OUTPUT_MAX_DIMEN $local > /dev/null
done
echo "Complete."