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

Question

I need a debug output with colorful string, like node.js chalk.

I tried to find the packages, but there is no proper package.

Answer 1

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[30m Red:     \x1B[31m Green:   \x1B[32m Yellow:  \x1B[33m Blue:    \x1B[34m Magenta: \x1B[35m Cyan:    \x1B[36m White:   \x1B[37m Reset:   \x1B[0m 

Learn more from these links:

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