Permissions

Request location permission and handle denial.

Location permission

Before reading the location, you must ask the user for permission. You request it with the requestPermission method. If granted, it returns PermissionStatus.granted; if denied, it returns PermissionStatus.denied.

final status = await location.requestPermission();
if (status != PermissionStatus.granted) return;

Permission check

It is good practice to check the permission status before reading the location. You learn the current permission with hasPermission; if it is not granted, you request it with requestPermission. This flow avoids showing unnecessary prompts.

final has = await location.hasPermission();
if (has != PermissionStatus.granted) {
  await location.requestPermission();
}

Exercise Request permission and check it

Create a Location instance, request permission with requestPermission and print whether the returned value is granted.

Show example solution

enum PermissionStatus { granted, denied }

class Location {
  Future<PermissionStatus> requestPermission() async => PermissionStatus.granted;
}

void main() async {
  final location = Location();
  final status = await location.requestPermission();
  print(status == PermissionStatus.granted);
}

Test yourself

What does requestPermission return if the user denies location permission?
- PermissionStatus.granted
- PermissionStatus.denied
- null
- It throws an error
Show answer

PermissionStatus.denied — If permission is denied, requestPermission returns PermissionStatus.denied; it does not throw or return null.

Request permission

final status = await location.____;

Show answer

final status = await location.requestPermission();

Permission parts

requestPermission

Requests permission
PermissionStatus.granted

Permission granted
PermissionStatus.denied

Permission denied
hasPermission

Checks current permission

Next lesson: onLocationChanged

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