iPhone OS: Crash Logs


February 4, 2009

iOS, UIKit

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I’ll start with a disclaimer. I’m not sure whether the information provided in this post is covered by iPhone Developer Program NDA or not. If it is, the post will be removed. Secondly, this post is a result of googling, so I haven’t invented anything new here.
Working with crash logs typically involves certain interaction between developers and users, unless they are automagically sent to the developer. First of all, the user should get the crash log and send it to the developer, who should examine it, find the bug and fix it.
iPhone OS and Mac OS X are remarkably similar architectures. Both store crash logs to help identify crashing bugs. The difference between the two is how users retrieve them. On Mac OS X every user has unrestricted access to crash logs related to the applications she runs. The iPhone does not even have a file browser. What to do? iTunes comes to the rescue.
Whenever you synchronize your iPhone or iPod Touch, all the crash logs are transferred to your computer. Here are their locations:

  • Mac OS X : ~/Library/Logs/CrashReporter/MobileDevice/
  • Windows XP: C:\Documents and Settings\\Application Data\Apple computer\Logs\CrashReporter/
  • Windows Vista: C:\Users\\AppData\Roaming\Apple computer\Logs\CrashReporter/MobileDevice/

The log file names start with application name and have the extension “crash”. They are just plain text files and can be sent by e-mail in original or zipped form, or even copy-pasted into your e-mail program.

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