Changing panelBody at runtime

[ArefMozafari]

Hi there how can i change the panelBody at the run time? because i'm using the panel for my root widget and for each item that user selected in current screen i need to show different body in the panel

[akshathjain]

I'd recommend maintaining an enum that describes all the states of your panel. When the state is supposed to change, call setState() and update an enum variable. For example:

enum PanelWidgetState{
    WIDGET_ONE,
    WIDGET_TWO
}

PanelWidgetState _pws;

Widget build(BuildContext context){
    return SlidingUpPanel(
        panel: _panel(),
        ...
    );
}

// called whenever the UI is supposed to change
void _onChange(){
    setState((){
        if(some_condition) _pws = PanelWidgetState.WIDGET_ONE;
        ...
    });
}

Widget _panel(){
    if (_pws == PanelWidgetState.WIDGET_ONE) return WidgetOne();
    else if ...
}

[ArefMozafari]

Thank you