How to get data from the FutureProvider in flutter
FutureProvider
exposes the result of the Future
returned by builder
to its descendants.
As such, using the following FutureProvider
:
FutureProvider<int>(
initialData: 0,
builder: (_) => Future.value(42),
child: ...
)
it is possible to obtain the current value through:
Provider.of<int>(context)
or:
Consumer<int>(
builder: (context, value, __) {
return Text(value.toString());
}
);
In my example I used the create parameter of FutureProvider to request the API, then then I used Consumer to get the results of the API.
FutureProvider(
create: (_) => peopleService.getAllSurvivor(),
child: Consumer<List<Survivor>>(builder: (context, survivors, _) {
return survivors == null
? Center(child: CircularProgressIndicator())
: ListView.builder(
itemCount: survivors.length,
itemBuilder: (context, index) {
var survivor = survivors[index];
return ListTile(
title: Text(survivor.name),
subtitle: Text(survivor.gender),
leading: Icon(Icons.perm_identity),
);
},
);
})));