Android screenshot to current dir

screenshot_android.sh

#!/bin/bash

while getopts y: flag
do
    case "${flag}" in
        y) size=${OPTARG};;
    esac
done

DEVICES=`adb devices | grep -v devices | grep device | cut -f 1`
for device in $DEVICES; do
	output="screen_$(echo $device)_$(date +%Y%m%d_%H%M%S).png"
    echo "Capturing from $device"
    adb -s $device shell screencap -p /sdcard/screen.png
    adb -s $device pull /sdcard/screen.png $output
    adb -s $device shell rm /sdcard/screen.png

    if [ ! -z $size ] 
	then 
	    sips -Z $size $output
	fi
    
done

A small batch script that captures screenshots from all the connected Android devices and stores them in the current directory.

Optional parameter -y to specify the longest size to resize the grabbed screenshot. If not specified the original size will be kept.

do you use this in some UI test? Or what is the use case. Thanks.

Thanks for the script!
I've modified it a bit to suit my need (working with devices with multiple screens like the Samsung Z Fold):

#!/bin/bash

while getopts y: flag
do
    case "${flag}" in
        y) size=${OPTARG};;
    esac
done

DEVICES=`adb devices | grep -v devices | grep device | cut -f 1`
for device in $DEVICES; do
    DISPLAYS=`adb -s $device shell dumpsys SurfaceFlinger --display-id | cut -d" " -f 2`
    for display in $DISPLAYS; do
        echo "Capturing from $display on $device"
        output="screen_$(echo $device)_$(echo $display)_$(date +%Y%m%d_%H%M%S).png"
        adb -s $device exec-out screencap -p -d $display > $output

        if [ ! -z $size ]; then 
	        sips -Z $size $output
	    fi
    done
done

BTW: Using exec-out you can avoid to generate the file on the device and then copy/delete it.