Future<bool> vs bool in Flutter - if-statement

Question

I created an rest api method like below,
Future<bool> activateAccount(int id, int code) async{
final body = {"code": '$code'};
final response = await client.post(
'$baseUrl/user/account/$id',
body: body
);
if(response.statusCode == 200){
return true;
}else return false;
}
but i can't use this method in if statement like this:
bool a = userApiService.activateAccount(...)
if(a){
...
}
because:
A value of type 'Future<bool>' can't be assigned to a variable of type 'bool'.
in what is problem?
how to change this method to return it boolean depending on the result of the operation?
I would like to include in my raisedButton if statement:
child: RaisedButton(
onPressed: () {
userApiService.activateAccount(sharedPreferences.getInt('newUserId'), int.parse(activeCode));
// sharedPreferences.clear();
},
child: Text("ENTER",
style: TextStyle(color: Colors.white, fontSize: 16.0, fontWeight: FontWeight.bold)),
shape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(40.0)),
color: Colors.red,
)

Answer 1

Returning the bool like this shorter than yours;
Future<bool> activateAccount(int id, int code) async {
final body = {"code": '$code'};
final response = await client.post('$baseUrl/user/account/$id', body: body);
return response.statusCode == 200;
}
And to use return value is you need to use await keyword;
bool a = await userApiService.activateAccount(...)
if(a){
...
}
for using with your button just add async keyword before curly brackets;
onPressed: () async {
bool a = await userApiService.activateAccount(...)
if(a){
...
}
}