在flutter的默认设置中，gitignore只忽略了必要的文件，很多android和ios配置文件仍是提交了，这里是在网上找到的一份比较详尽的忽略文件：
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
.properties
.flutter-plugins
.packages
.lock
.bin
pubspec.look
local.properties
.packages
.flutter-plugins
.packages
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
.dart_tool/
.flutter-plugins
.packages
.pub-cache/
.pub/
/build/
# Android related
# Android related
**/android/**/gradle-wrapper.jar
**/android/.gradle
**/android/captures/
**/android/gradlew
**/android/gradlew.bat
**/android/local.properties
**/android/**/GeneratedPluginRegistrant.java
**/android/key.properties
*.jks
# 针对flutter当做module集成进现有项目时，.android目录下的文件
**/.android/**/gradle-wrapper.jar
**/.android/.gradle
**/.android/captures/
**/.android/gradlew
**/.android/gradlew.bat
**/.android/local.properties
**/.android/**/GeneratedPluginRegistrant.java
**/.android/key.properties
# iOS/XCode related
**/ios/**/*.mode1v3
**/ios/**/*.mode2v3
**/ios/**/*.moved-aside
**/ios/**/*.pbxuser
**/ios/**/*.perspectivev3
**/ios/**/*sync/
**/ios/**/.sconsign.dblite
**/ios/**/.tags*
**/ios/**/.vagrant/
**/ios/**/DerivedData/
**/ios/**/Icon?
**/ios/**/Pods/
**/ios/**/.symlinks/
**/ios/**/profile
**/ios/**/xcuserdata
**/ios/.generated/
**/ios/Flutter/App.framework
**/ios/Flutter/Flutter.framework
**/ios/Flutter/Generated.xcconfig
**/ios/Flutter/app.flx
**/ios/Flutter/app.zip
**/ios/Flutter/flutter_assets/
**/ios/ServiceDefinitions.json
**/ios/Runner/GeneratedPluginRegistrant.*
# 针对flutter当做module集成进现有项目时，.ios目录下的文件
**/.ios/**/*.mode1v3
**/.ios/**/*.mode2v3
**/.ios/**/*.moved-aside
**/.ios/**/*.pbxuser
**/.ios/**/*.perspectivev3
**/.ios/**/*sync/
**/.ios/**/.sconsign.dblite
**/.ios/**/.tags*
**/.ios/**/.vagrant/
**/.ios/**/DerivedData/
**/.ios/**/Icon?
**/.ios/**/Pods/
**/.ios/**/.symlinks/
**/.ios/**/profile
**/.ios/**/xcuserdata
**/.ios/.generated/
**/.ios/Flutter/App.framework
**/.ios/Flutter/Flutter.framework
**/.ios/Flutter/Generated.xcconfig
**/.ios/Flutter/app.flx
**/.ios/Flutter/app.zip
**/.ios/Flutter/flutter_assets/
**/.ios/ServiceDefinitions.json
**/.ios/Runner/GeneratedPluginRegistrant.*
# macOS
**/macos/Flutter/GeneratedPluginRegistrant.swift
**/macos/Flutter/Flutter-Debug.xcconfig
**/macos/Flutter/Flutter-Release.xcconfig
**/macos/Flutter/Flutter-Profile.xcconfig
# Coverage
coverage/
# Symbols
app.*.symbols
# Exceptions to above rules.
!**/ios/**/default.mode1v3
!**/ios/**/default.mode2v3
!**/ios/**/default.pbxuser
!**/ios/**/default.perspectivev3
!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
!/dev/ci/**/Gemfile.lock
.packages~92442170bbeb67da2b4cc92142720c48c0d7f490
原来的状态：
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
/Users/max/Desktop/mqtt/lib/pages/mqtt_browser_client.dart
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/
# Web related
lib/generated_plugin_registrant.dart
# Exceptions to above rules.
!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
