조회 수 45410 댓글 0
?

단축키

Prev이전 문서

Next다음 문서

+ - Up Down Comment Print
?

단축키

Prev이전 문서

Next다음 문서

+ - Up Down Comment Print

출처 : http://blog.shvetsov.com/2013/02/grab-android-screenshot-to-computer-via.html

 

Grab Android screenshot to computer via ADB

 

There are many ways to take a screen shot on Android device. One simple way to capture the screen on Galaxy Nexus is to simultaneously press and hold Power and Volume Down buttons. The image will be saved in a "Screenshot" directory and accessible via Gallery.

Quite often, however, I need to copy the captured image over to my computer. Usually, I do this with adb pull command, but if I'm going to use CLI to retrieve the file, why don't I take the screen shot with it as well?

One method is to use screencap command via adb shell like so:

adb shell screencap -p /sdcard/screen.png
adb pull /sdcard/screen.png
adb shell rm /sdcard/screen.png

Not bad, but seems like there's some room for improvement.

Information provided by screencap -h indicates that screen shot can be sent to stdout, but running adb shell screencap -p > screen.png results in seemingly corrupt file.

Luckily, I wasn't the first person looking into this issue. Apparently, adb shell is performing an EOL (end-of-line) character conversion, from LF (line feed, '\n', 0x0A) to CR+LF (carriage return followed by line feed, '\r\n', 0x0D0A).

If that sounds familiar, that's because I've dealt with this before. Unfortunately, this time we're working with binary data, so using tr -d '\r' command to remove all 0x0D will likely corrupt it by also removing bytes that aren't part of the 0x0D0A sequence. We want to only remove carriage return characters when they are followed by a line feed.

The solution is to use sed search and replace as follows:

adb shell screencap -p | sed 's/\r$//' > screen.png

Unfortunately, I found that sed fix while works on Ubuntu doesn't work on OS X. This solution using perl handles binary search and replace better:

adb shell screencap -p | perl -pe 's/\x0D\x0D\x0A/\x0A/g' > screen.png


Now we have a one-liner that grabs a screen shot from the Android device and stores directly on the computer executing the command. Beautiful.

 

 


Dreamy의 코드 스크랩

내가 모으고 내가 보는

List of Articles
번호 분류 제목 날짜 조회 수 추천 수
461 C# ArrayList를 string[] 배열로 변환하는 방법 2015.09.23 12889 0
460 Android ART(Android RunTime)에 대해 1 2014.02.10 16113 0
459 Pi ATTINY85 PIN정보, Data sheet 2 file 2016.12.10 8969 0
458 C# AutoResetEvent 클래스 - 신호(Signal)에 의한 쓰레드 동기화 2013.08.14 14700 0
457 LINUX awk 명령어 사용법 1 2006.02.16 114622 15
456 업무 Back-End 관련 정보 2022.05.17 1434 0
455 C Base64 로 encoding / decoding 하는 예제 file 2005.09.22 25863 0
454 LINUX bash 의 명령어 History 2015.01.20 7307 0
453 일반 bat(배치) 파일 제대로 쓰기 2009.02.24 53951 0
452 Python BeautifulSoup로 HTML 파싱 끝내기 2013.04.08 42527 0
451 Python BeautifulSoup으로 웹에 있는 데이터 긁어오기 2013.04.08 76925 0
450 C# Best way to implement keyboard shortcuts in a Windows Forms application 2015.11.06 6642 0
449 일반 Beyond Compare로 patch 파일 만들기, 적용하기 file 2012.10.22 16294 0
448 LINUX bluetooth on Ubuntu 2017.05.25 13454 0
447 일반 BT와 BLE 2017.05.16 6525 0
목록
Board Pagination ‹ Prev 1 2 3 4 5 6 7 8 9 10 ... 34 Next ›
/ 34

나눔글꼴 설치 안내


이 PC에는 나눔글꼴이 설치되어 있지 않습니다.

이 사이트를 나눔글꼴로 보기 위해서는
나눔글꼴을 설치해야 합니다.

설치 취소

Designed by sketchbooks.co.kr / sketchbook5 board skin

Sketchbook5, 스케치북5

Sketchbook5, 스케치북5

Sketchbook5, 스케치북5

Sketchbook5, 스케치북5