30 November 2024 Leave a comment Tech-Help
Filtering logs in Android’s Logcat is a common need for developers who wish to focus on specific messages while excluding others. This article provides a guide to effectively exclude messages by TAG name using Android adb logcat, ensuring you can maintain a clear and focused debugging session.
Understanding Logcat Filtering
Logcat, the command-line tool that dumps a log of system messages, offers various ways to filter these logs. While it traditionally displays messages that match specified filters, there are methods to exclude certain tags, allowing you to view all logs except those from specified tags.
Implementing Exclusion Filters
One of the most effective ways to exclude logs by tag is using regular expressions in Android Studio’s Logcat. This approach leverages negative look-ahead assertions to filter out unwanted logs.
Using Regular Expressions in Android Studio
- Open the Logcat view in Android Studio.
- Go to Edit Filter Configuration in the Logcat window.
- In the Log Tag input box, enter the following regex:
^(?!(WifiMulticast|WifiHW|MtpService|PushClient)) - Ensure the Regex checkbox is checked.
This setup will exclude logs from tags such as WifiMulticast, WifiHW, MtpService, and PushClient, allowing you to focus on other logs.
Alternative Methods
For those who prefer using the command line, you can pipe Logcat through grep with the inverted match option:
adb logcat | grep --invert-match 'notshownmatchpattern'This method is useful for excluding multiple tag patterns specified in a regular expression.
Practical Application and Repeato
Incorporating effective log filtering techniques is crucial for efficient debugging and testing processes. Tools like Repeato, a no-code test automation tool for iOS and Android, can streamline these processes further. Repeato enables quick editing and running of tests, utilizing computer vision and AI. It includes ADB on board, allowing the execution of ADB commands through script steps, which can be timed and sequenced effectively, complementing your log filtering strategies.
