Flutter update screen data on resume-CodePudding

i use the following code to redirect between screens.

Navigator.push(
        context,
        PageRouteBuilder(
          pageBuilder: (context, animation, animation2) => Directionality(
            textDirection: TextDirection.rtl,
            child: screen,
          ),
        ));

now i want it so when the user presses back, the previous screen is displayed and initstate recalled.(in initstate of previous screen i get data from server).

CodePudding user response：

In an async function, you can use await to wait for the user to come back from the pushed screen:

await Navigator.push(...);

But initState is executed only once, so I suggest using setState if you need to rebuild the widget, after the line above:

setState(() {
  // do what you need to update widget
});

so after the above line

CodePudding user response：

initState is called when the state is inited, so it will be called only when the state is created. You could use the then of Navigator.push

Navigator.push(   context,
        PageRouteBuilder(
            pageBuilder: (context, animation, animation2) => Directionality(
                textDirection: TextDirection.rtl,
                child: screen,
        ),
   ).then((_){
        // Your callback here
   });