Yaohong

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The Flutter Plugin Project Files

The Flutter Plugin Project Files Creating the plugin project $ flutter create --org com.example --template=plugin --platforms=android,ios,linux,macos,windows hello_plugin Signing iOS app for device deployment using developer identity: "Apple Development: Yaohong Huang (WS3UUERGF9)" Creating project hello_plugin... Resolving dependencies in hello_plugin... (3.3s) Got dependencies in hello_plugin. Resolving dependencies in hello_plugin/example... (1.1s) Got dependencies in hello_plugin/example. Wrote 161 files. All done! Your plugin code is in hello_plugin/lib/hello_plugin.dart. Your example app code is in hello_plugin/example/lib/main.dart. Host platform code is in the android, ios, linux, macos, windows directories under hello_plugin.

Posted by yaohong Friday, May 24, 2024

The Widget tree, Element tree, and Rendering Object tree in flutter

The Widget tree, Element tree, Rendering Object tree in flutter The purpose of the three type of trees in Flutter: Widget tree: hold the config; Element tree: hold a spot in the UI hierarchy and manage parent/child relationship Rendering object tree: size and paint itself, lay out children; Entry-point binding.dart void runApp(Widget app){ WidgetsFlutterBinding.ensureInitialized() ..attachRootWidget(app) ..scheduleWarmUpFrame(); } Resouce: https://www.youtube.com/watch?v=996ZgFRENMs At what point are the root nodes for these three tree types created?

Posted by yaohong Thursday, May 23, 2024

The project files generated by 'flutter create --template=plugin_ffi' using dart:ffi to call C APIs

The project files generated by ‘flutter create –template=plugin_ffi’ using dart:ffi to call C APIs Flutter mobile and desktop apps can use the dart:ffi library to call native C APIs. Here are the project files generated by executing the following command: flutter create --platforms=android,ios,macos,windows,linux --template=plugin_ffi native_add flutter version: flutter_macos_3.10.5-stable Reference: 1.Binding to native Android code using dart:ffi 2.Binding to native iOS code using dart:ffi Notes: 1.The FFI library can only bind

Posted by yaohong Thursday, May 23, 2024