Package and Plugin development of Flutter

1. Package

• Only the Dart code is included

1.1 create Package

• To create the Dart package, end up using parameters--template=packageTo perform theflutter create

  % flutter create --template=package 'package_name'
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• -i,-a: Specifies the language,The default iOS is OC.Android for Java

  % flutter create --template=plugin -i swift -a kotlin 'plugin_name'
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1.2. Content optimization of upload Package

1.2.1. Upload local image resources

• It is best to use the system icon, no complex configuration, user-friendly to download package, reduce error
• Upload the lib folder, so directlyPlace the image folder image in the lib folderCan be

1.2.2. Use image resources in package

• Configure the full image path

• WidgetIncreases when called inPackage attributesWhich tag comes frompackagepackage

  Image(
      image:AssetImage('images/imageName.png', package:'package_demo'),
  )
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1.3. Release Package(need ladder 🪜)

• Publishing the Package requires thepubspec.yamlFile Configuration
  • Contains image resources to configurepubspec.yamlResource path in file, removeassetsThe annotation

1.3.1. Check packages

• CD to the FLUTTER project folder
• % flutter packages pub publish --dry-run

1.3.2. Release packages

• % flutter packages pub publish
  • Publishing plug-ins and packages requires a Google account, as well as climbing the wall
  • Copy the link and paste it into Google to select your account to log in and complete the authorization
  • If wall scaling cannot be resolved, it may be related to mirroring. You are advised to configure mirroring. The following error message is displayed:
    • The solution is not to use the official publishing mode, but to specify the server, image publishing:

      % flutter packages pub publish --server=https://pub.dartlang.org
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    • Configuration is requiredLICENSECopyright certificate, configure it

1.3.3. Generate a LICENSE

• GithubSelect new warehouse onlicenseoptions
• Click on theLICENSEPaste content into the Flutter projectLICENSE fileIn the

1.4. create example for package

• Dart create the flutter project,get the package uploaded, write the sample code and put all the data in main.dart file.
• Copy the main.dart file of the created project into the example folder you created in the packaged package file
• The package bagpackage_demo.dartYou may need to split functionality into multiple.Dart’spartIn the file:
  • The split DART file is passed at this pointpart of 'package_demo.dart'Specify belongs
  • Master filepackage_demo.dartaddPart 'Split file name. Dart'

2. Plugin

• Contains not only the Dart code,It also includes apis for iOS and Android

2.1. Create a Plugin

• To create a plug-in package, you can end up using parameters--template=pluginTo perform theflutter create

  % flutter create --template=plugin 'plugin_name'
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• --org: Specify organization, reverse domain name notation,Dart packageThe package does not require an organization name,–orgThis only works if –template=plugin

  % flutter create --org com.example --template=plugin 'plugin_name'
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2.2. Write Plugin

• It can be written in the iOS Runner project and replaced in the iOS code of the Plugin

2.3. Detect and publish in exactly the same way as commands and packages