How to wait async function is done processing in flutter

Question

I make initPlatformState .. an async function to detect mock location and after the process of initPlatformState function is finished I need to do something...but the problem is... because initPlatformState is working asynchronously and I am not putting initPlatformState inside initState... initPlatformState will work before it is not done yet... is there a way to wait initPlatformState has done doing the process and then I will do something else? here is my code

bool canMockLocation=false;
initPlatformState() async {
    if (!mounted) return;
    try {
      canMockLocation = await TrustFall.canMockLocation;
    } catch (error) {
      print(error);
    }

    setState(() {
      canMockLocation = canMockLocation;
    });
  }

_getData() async {
       setState(() {
        load = true;
      });
      initPlatformState();
      setState(() {
        load = false;
      });
       if(canMockLocation){
        show alert;
       }else{
        print("check");
       }

and here is for my widget

             Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      loadLocation
                          ? Text("Loading...") 
                          : Text("Success")
             .....

Viren V Varasadiya · Accepted Answer · 2020-04-29 04:45:53Z

2

add await where you are calling this method. await will hold position till function process is not complete.

await initPlatformState();

answered Apr 29, 2020 at 4:45

Viren V Varasadiya

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4 Comments

wahyu Over a year ago

I wanna ask.. you said that await will hold until the process is not complete... what do you mean by not complete?

Viren V Varasadiya Over a year ago

as your initPlatformState method is async so if you add await where you are calling(in _getData method) then until that function's each line is not executed next line of _getData will not exicuted.

wahyu Over a year ago

so using await initPlatformState()...getData will be executed until the process inside initPlatformState() is done... is that right if I say llike that?

Viren V Varasadiya Over a year ago

yes, to be more clear. even this line will be not executed load = false;

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