Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Mobile Debugging
Search
Remy Sharp
September 21, 2012
Technology
74
9.7k
Mobile Debugging
Mobile debugging is a bitch. Let's talk about that, and then fix it.
Remy Sharp
September 21, 2012
Tweet
Share
More Decks by Remy Sharp
See All by Remy Sharp
Using a Modern Web to Recreate 1980s Horribly Slow & Loud Loading Screens
rem
0
86
Recreating the ZX Spectrum loader with Web APIs
rem
0
180
Living Standard
rem
1
250
State of the Gap
rem
1
810
The Art of Debugging
rem
2
2.1k
EdgeConf - Progressive Enhancement
rem
0
240
Toxic Side of Free. Or: how I lost the love for my side project.
rem
0
710
Muddling my way through real time
rem
0
670
The Bits Behind JS Bin
rem
4
850
Other Decks in Technology
See All in Technology
事前準備が肝!AI活用のための業務改革
layerx
PRO
1
380
とあるOSSを継続可能にするための取り組みについて / OSS Refactoring Process
bun913
1
200
効果的なオンコール対応と障害対応
ryuichi1208
6
3.1k
eBPFのこれまでとこれから
yutarohayakawa
10
3.2k
不動産 x AIことはじめ~データの真価を拓くために
estie
0
110
Mocking in Rust Applications
taiki45
1
410
ネットワークだけ隔離されたコンテナ作成デモ / Kichijoji.pm36
tenforward
1
230
技術的負債解消の取り組みと専門チームのお話
bengo4com
0
330
Tricentisにおけるテスト自動化へのAI活用ご紹介/20240910Shunsuke Katakura
shift_evolve
0
200
Jetpack Compose Modifier 徹底解説 / Jetpack Compose Modifier
wiroha
0
190
チームビルディングは"感性"で向き合おう / Team Building with Awareness
kohzas
0
240
Analytics-Backed App Widget Development - Served with Jetpack Glance
miyabigouji
0
600
Featured
See All Featured
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
166
48k
The Mythical Team-Month
searls
218
43k
Design by the Numbers
sachag
277
19k
The World Runs on Bad Software
bkeepers
PRO
64
11k
jQuery: Nuts, Bolts and Bling
dougneiner
61
7.4k
Code Reviewing Like a Champion
maltzj
517
39k
Thoughts on Productivity
jonyablonski
66
4.2k
4 Signs Your Business is Dying
shpigford
179
21k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
45
4.8k
How to Think Like a Performance Engineer
csswizardry
16
960
Six Lessons from altMBA
skipperchong
26
3.4k
Typedesign – Prime Four
hannesfritz
39
2.3k
Transcript
Mobile Debugging Remy Sharp / @rem
Debugging is a... http://www.flickr.com/photos/grill/2655848033
...and I ❤ debugging http://www.flickr.com/photos/grill/2655848033
Back in early 2000
Our first mobile webapp circa 1999 Amazingly actually still live!!!
XML parsing :( (but strict is strict)
None
http://www.flickr.com/photos/60119893@N00/2883012011/
Art of debugging methodically Replicate so that you can Isolate
and ultimately Eliminate
Principles 1. Know thy enemy 2. Close the gap 3.
Expect the unexpected
1. Know thy enemy
ݾ൴ɼඦፌෆຆɻ “If you know both yourself and your enemy, you
can win a hundred battles without jeopardy.” http://www.flickr.com/photos/katieharbath/4856255673
Simulators mobilexweb.com/emulators
Get real devices http://www.flickr.com/photos/sidesh0w/6675107387 http://bradfrostweb.com/blog/mobile/test-on-real-mobile-devices-without-breaking-the-bank/
Get FREE devices http://www.flickr.com/photos/sidesh0w/6675107387 http://bradfrostweb.com/blog/mobile/test-on-real-mobile-devices-without-breaking-the-bank/
Share devices http://www.flickr.com/photos/sidesh0w/6675107387
http://jsconsole.com?this
Understand performance
WTF? Wikipedia has more JavaScript than Gmail? http://remysharp.com/mobile-battery-performance/
"200k of JavaScript held within a block comment adds 240ms
during page load, whereas 200k of JavaScript that is parsed during page load added 2600 ms."
Network monitoring
Charles - $50 Fiddler - windows - free
http://code.google.com/p/pcaphar
Make test cases
2. Close the gap http://www.flickr.com/photos/bowbrick/2093650123
Save Refresh
Host locally •Network Utility (mac) ifconfig en0 inet / ifconfig
eth0 ipconfig (look for ip4v) •Point mobile to that IP •localtunnel (to get out of VMs)
None
jsconsole :listen
weinre “Pronounced like the word ‘winery’. Or maybe like the
word ‘weiner’. Who knows, really.” http://www.flickr.com/photos/booleansplit/6924192819/
Adobe Shadow
iWebInspector / Hooking Web Inspector iWebInspector
jsbin.com
None
Aardwolf http://www.flickr.com/photos/brostad/6294164371
Real debuggers http://www.flickr.com/photos/sidesh0w/6675107387
Chrome for Android
:1337 http://www.flickr.com/photos/blackberryimages/6932160681
:7001
:6000
iOS6
Build your own tools http://www.flickr.com/photos/jannem/3312946500 Test for events Performance metrics
Emulate APIs & event types etc...
remote-tilt.com
jsbin 3 jsbin.com
3. Expect the unexpected http://www.flickr.com/photos/jdhancock/3669455809
Once upon a time... Demoing mobile app Same code Same
mobile device Same OS version But different result
Wifi != ISP network
msie=/*@cc_on!@*/0;
Tether and check via desktop O2 you can change username
to "bypass" to confirm bugs, not to solve them. Also will need to check with providers to be sure.
iPod Touch would crash upon render
Last resort debugging 50/50
Emulating slow connections http://www.flickr.com/photos/63885769@N00/4696519429
Network Link Conditioner (xcode + mac) Slowy.app (mac + $)
ipfw (mac / *nix) sloppy http://www.dallaway.com/sloppy/ (java app) wipfw (windows)
Beware of red herrings console.log
“When you have eliminated the impossible, whatever remains, however improbable,
must be the truth”
If all else fails, take a break.
We need to demand more
My dream: Single Debugging Tool 1. Can we build this
ourselves? 2. Can we hook in and normalise all the remote protocols? 3. Can we do step debugging?
I think so, but it'll be a challenge.....
Otherwise: rock on. @rem leftlogic.com Hire us @