how to use FutureBuilder with FutureOr-CodePudding

I have a variable of FutureOr<Duration?>, I'm assuming that it can return either Future<Duration?> or Duration?, right?

how can I use it with the FutureBuilder like a normal future method, that will wait for the Duration? if it's future, if not, just use the Duration? value directly.

when I try the following:

FutureBuilder<Duration?>(
            future: durationFuture,
            builder: (BuildContext context, snapshot) {
            /* my widgets implementations */
            },
          ),

this throws this:

The argument type 'FutureOr<Duration?>?' can't be assigned to the parameter type 'Future<Duration?>?'

how the FutureOr type is working and how do I implement a FutureBuider based on it ?

CodePudding user response：

Try this:

FutureBuilder<Duration?>(
  future: Future.value(durationFuture),
  builder: (BuildContext context, snapshot) {
    /* my widgets implementations */
  },
)