flutter_lua_dardo 0.0.2

A new Flutter package.

flutter_lua_dardo

This is an extension of the LuaDardo library.LuaDardo library allows Flutter to execute Lua scripts, and this library which mainly wraps some of Flutter's interfaces, which gives Flutter the ability to dynamically update and generate interfaces using remote scripts in places where UI styles need to be changed frequently.

Please note that this is an experimental exploration. It only encapsulates a few simple Widgets. Others are welcome to encapsulate more Widgets for Lua.


Usage

New Lua script test.lua:

function getContent1()
    return Row:new({
        children={
            GestureDetector:new({
                onTap=function()
                    flutter.debugPrint("--------------onTap--------------")
                end,

                child=Text:new("click here")}),
            Text:new("label1"),
            Text:new("label2"),
            Text:new("label3"),
        },
        mainAxisAlign=MainAxisAlign.spaceEvenly,
    })
end

function getContent2()
    return Column:new({
        children={
            Row:new({
                children={Text:new("Hello"),Text:new("Flutter")},
                mainAxisAlign=MainAxisAlign.spaceAround
            }),
            Image:network('https://gitee.com/arcticfox1919/ImageHosting/raw/master/img/flutter_lua_test.png'
                ,{fit=BoxFit.cover})
        },
        mainAxisSize=MainAxisSize.min,
        crossAxisAlign=CrossAxisAlign.center
    })
end

In your Flutter project, add the dependency. pubspec.yaml

flutter_lua_dardo: ^0.0.2

Add Dart code:

class _MyHomePageState extends State<MyHomePage> {
  LuaState _ls;
  bool isChange = false;
    
  @override
  void initState() {
    loadLua();
    super.initState();
  }
    
  void loadLua() async {
    String src = await rootBundle.loadString('assets/test.lua');
    try {
      LuaState ls = LuaState.newState();
      ls.openLibs();
      FlutterLua.open(ls);
      FlutterWidget.open(ls);
      ls.doString(src);
      setState(() {
        _ls = ls;
      });
    } catch (e) {
      print(e);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        alignment: Alignment.center,
        child: _ls == null
            ? CircularProgressIndicator()
             // call the specified Lua function
            : FlutterWidget.findViewByName<Widget>(
            _ls, isChange ? "getContent2" : "getContent1"),
      ),
      floatingActionButton: FloatingActionButton(
        child: Icon(CupertinoIcons.arrow_swap),
        onPressed: (){
          setState(() {
            isChange = !isChange;
          });
        },
      ),
    );
  }
}

For usage of LuaDardo, see here.