Ios App Log File

By connecting an ios device to a mac you can review those logs.

Ios app log file. Reproduce the action causing the issue. If you re a mac user you can rename the saved text file s extension from txt to log and open it in the macos console app. Ios touch id guide.

Give a suitable name for the file. Click ctrl c to stop logging. Low level insights on ios input events.

When using cocoalumberjack with file logging on an ios app extension like a today s extension the files are saved in the extension s container. Itunes will automatically save any crash logs from your ios devices after the device is plugged in to your computer and synced with itunes. Obtaining crash logs from device.

Although this container is accessible in a simulator it is not on non jailbroken devices. Type in the following command to start capturing the device log to a file. It turns out you can query the log for messages related to specific apps or just log the entire thing.

Start the console app and choose the relevant device select your connected ios device and you will see the ios application logs being gathered you can filter the log messages using the search bar on top right. The iphone and ipad generate logs of some system activity including app crashes and other potentially interesting or helpful data. This is a low level c api which is present on osx as well as ios and as such it has a man page.

You can then press command f and use keywords like backupagent or scheduler to thin out your log and display only what you need. Browsing through log data is generally only useful for developers and advanced users either for troubleshooting or diagnostic purposes but it may have broader applications for some other environments too. A new text file logfile txt will be created in the iosloginfo folder.