print() statement not printing to console in flutter iOS app within Android Studio

user_4424889 0
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The print() statement is not printing any data within Android Studio's console in Flutter iOS version, but same code works fine for flutter android version.

Here is the flutter Doctor summary:

[✓] Flutter (Channel master, v1.10.7-pre.109, on Mac OS X 10.14.6 18G103, locale en-IN)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.0)
[✓] Android Studio (version 3.5)
[✓] IntelliJ IDEA Community Edition (version 2019.1)
[✓] Connected device (1 available)

• No issues found!
flutter android-studio ios
8 Answers

I had the same issue. What worked for me was to add 

import 'dart:developer';

to the top of my file, and then use

log('your message here');

instead of print.

user_75597170

you should try

debugPrint("")

to print in the console

user_79779480

had same issue... embarrassing said that I had my debug console filtered without realize it .. after I remove the filter text I could see all my print() and log()

user_108455240

I got the same issue.

As a workaround:

Select 'more actions' in the console, 'Open observatory' and the 'see debug' link. Then you can see the outputs of the print statements.

user_106457870

We stumbled upon it today and apparently the first line of some loggings doesn't appear. So if you start with a \n before your loggings it should work.

os_log("\n  We're using this")
user_51197460

In my case this happened because I changed the display name in Xcode from Runner to something else. Everything was working fine, but there was no log output.

user_31572830

On pubspec.yaml change:

environment:
  sdk: ">=2.1.0 <3.0.0"

TO

environment:
  sdk: ">=2.6.0 <3.0.0"

Or high!

To more information visit Dart Diagnostic

user_82159750

For

[✓] Flutter (Channel stable, 2.10.3, on macOS 12.2 21D49 darwin-x64, locale en-NG)
    • Flutter version 2.10.3 at /Users/theodore_mca/softwares_and_sdks/flutter2
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 7e9793dee1 (6 days ago), 2022-03-02 11:23:12 -0600
    • Engine revision bd539267b4
    • Dart version 2.16.1
    • DevTools version 2.9.2

Or Later

import 'dart:developer';

log("Theodore");

For regular strings

import 'dart:developer';

  final Map<String, dynamic> value = {"email2":'_emailController.text',};
  value.addAll({
              "email":'_emailController.text',
               "username":'_usernameController.text'});
  
  log(value.toString());

For complex Data Type

user_91858560
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