Slow network request while loading widgets on screen #89786
Description
Steps to Reproduce
- Run
flutter create bug. - Make any network request with some loading widget on the screen (Example: CircularProgressIndicator())
- The request has a very long delay compared to making the same request without any loading widget on the screen
Capture Network page request without any loading widget
Capture Network page request with loading widget
Loading widget example
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: const [CircularProgressIndicator()],
),
),Possibly related to this
The problem happens mainly on requests that return very large JSON objects.
The problem has been noticed since version 2.4, on Windows and MacOs platforms.
I used the Dio library to make the requests
Logs
[✓] Flutter (Channel stable, 2.5.0, on Mac OS X 10.15.7 19H1323 darwin-x64, locale pt-BR)
• Flutter version 2.5.0 at /Users/reni/Downloads/Programas/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 4cc385b4b8 (2 days ago), 2021-09-07 23:01:49 -0700
• Engine revision f0826da7ef
• Dart version 2.14.0
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
• Android SDK at /Users/reni/Library/Android/sdk
• Platform android-30, build-tools 29.0.2
• ANDROID_HOME = /Users/reni/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.4, Build version 12D4e
• CocoaPods version 1.10.0
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 4.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
[✓] VS Code (version 1.60.0)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.26.0
[✓] Connected device (2 available)
• macOS (desktop) • macos • darwin-x64 • Mac OS X 10.15.7 19H1323 darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 93.0.4577.63
• No issues found!