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Using print() to log messages works in debug mode and I can see output in debug console of VSCode or in terminal. How can I get those with release build ? I have seen release build producing such logs but not sure how to get those.

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2 Answers 2

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42

Run

$ flutter logs

in terminal with terminal opened in a flutter project directory, connect phone with computer and use the release version of the app on phone to see logs similar to the debug version shows.

Edit: Not sure if this works for iOS.

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8 Comments

Please Elaborate what are you trying to say here? A released version of the app is not connected to any console. So, where to write that command. Or first connect the mobile device to a system and run flutter logs in the console?
@TahaMalik, Run this command in terminal, connect phone & run the release version of the app & it shows logs like in debug mode.
This does not seem to work on IOS
i confirm that it does not work on ios
not working in ios
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0

The app needs to be in release mode on a plugged in device.

Steps

  1. Run the app on device in release mode flutter run --release
  2. Quit the app
  3. Open a terminal in the flutter project directory
  4. Run flutter logs

Note

  • Only print() statements will show
  • The device must be physically plugged in
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