How to call print() with colorful text to android studio console in flutter

You need to print escape sequences to get the color effects in terminal output.

See also https://en.wikipedia.org/wiki/ANSI_escape_code

https://pub.dartlang.org/packages/ansicolor is a Dart package that makes this easy.

Although this didn't work in Android studio, it is supported in VS Code:

void main() {  print('This is a normal message.');  printWarning('This is a warning.');  printError('This is an error.');}void printWarning(String text) {  print('\x1B[33m$text\x1B[0m');}void printError(String text) {  print('\x1B[31m$text\x1B[0m');}

ANSI escape code explanation

The ANSI escape code string is pretty confusing if you're not familiar with the format.

Here is the string to turn Hello red:

\x1B[31mHello\x1B[0m

And here it is again with spaces added for clarity between the parts:

\x1B  [31m  Hello  \x1B  [0m

Meaning:

• \x1B: ANSI escape sequence starting marker
• [31m: Escape sequence for red
• [0m: Escape sequence for reset (stop making the text red)

Here are the other colors:

Black:   \x1B[30mRed:     \x1B[31mGreen:   \x1B[32mYellow:  \x1B[33mBlue:    \x1B[34mMagenta: \x1B[35mCyan:    \x1B[36mWhite:   \x1B[37mReset:   \x1B[0m

Learn more from these links:

• Build your own Command Line with ANSI escape codes
• ANSI escape code

I recommend using Grep Console if you don't want to change the way you actually print the characters

You can add a tag like [DEBUG] to your logs and grep console would do the magic for you.