Flutter: Add location permission on IOS in permission handler - ios

Question

I have a web view on my flutter project. Inside web view widget i am checking location permission with permission handler like below:
void _checkLocationPermission() async {
if (await Permission.location.request().isGranted) {
Position position = await getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
if (position == null) {
latitude = "";
longitude = "";
} else {
latitude = position.latitude.toString();
longitude = position.longitude.toString();
}
setState(() {
isPermission = true;
});
}
}
In Info.plist i added these permissions:
<key>NSLocationAlwaysUsageDescription</key>
<string>Needed to access location</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>Needed to access location</string>
And this is podfile:
# Uncomment this line to define a global platform for your project
# platform :ios, '9.0'
# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'
project 'Runner', {
'Debug' => :debug,
'Profile' => :release,
'Release' => :release,
}
def flutter_root
generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
unless File.exist?(generated_xcode_build_settings_path)
raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
end
File.foreach(generated_xcode_build_settings_path) do |line|
matches = line.match(/FLUTTER_ROOT\=(.*)/)
return matches[1].strip if matches
end
raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end
require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
flutter_ios_podfile_setup
target 'Runner' do
use_frameworks!
use_modular_headers!
flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end
#post_install do |installer|
# installer.pods_project.targets.each do |target|
# flutter_additional_ios_build_settings(target)
# end
#end
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
'PERMISSION_LOCATION=0',
## dart: PermissionGroup.notification
'PERMISSION_NOTIFICATIONS=0'
]
end
end
end
I commented default post install :
#post_install do |installer|
# installer.pods_project.targets.each do |target|
# flutter_additional_ios_build_settings(target)
# end
#end
and I added these lines at the end of this file, according permission handler suggestion:
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
'PERMISSION_LOCATION=0',
## dart: PermissionGroup.notification
'PERMISSION_NOTIFICATIONS=0'
]
end
end
end
But when i run on my iphone 7 plus when i open my web view the permission request dialog not shown and i don't have location permission!!!
podfile is correct? Because this is a first time i added something in podfile!!!

Answer 1

You don't need permission handler for this,this feature is available with Location plugin checkout their official
Download and import plugin
location
Add Permission
iOS
And to use it in iOS, you have to add this permission in Info.plist :
NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription
For more info checkout official plugin
Initialize variables
String latitude_data;
String longitude_data;
bool _serviceEnabled;
Current Location Function
Future _getLocation() async {
Location location = new Location();
var _permissionGranted = await location.hasPermission();
_serviceEnabled = await location.serviceEnabled();
if (_permissionGranted != PermissionStatus.granted || !_serviceEnabled) {
///asks permission and enable location dialogs
_permissionGranted = await location.requestPermission();
_serviceEnabled = await location.requestService();
} else {
///Do something here
}
LocationData _currentPosition = await location.getLocation();
longitude_data=_currentPosition.longitude.toString();
latitude_data=_currentPosition.latitude.toString();
///if you want you can save data to sharedPrefrence
SharedPrefrence().setLatitude(_currentPosition.latitude.toString());
SharedPrefrence().setLongitude(_currentPosition.longitude.toString());
}
Then uninstall the app from phone,run flutter clean and run again

Answer 2

Actually you added the values in Podfile backwards.
You need to assign them "1" for them to be allowed. Now you have actually denied them:
'PERMISSION_LOCATION=1',
'PERMISSION_NOTIFICATIONS=1'