How to request and check permissions in Flutter ?

Hello Guys How are you all ? Hope you all are fine. Requesting permissions usually become a messy task when there’s a lot of paths you want to take your user on based on the permissions. So in this tutorial we are going to learn How to request and check permissions in Flutter? So without wasting your time lets start this tutorial without wasting your time.

How to request and check permissions in Flutter ?

• Add this to your package’s pubspec.yaml file:

dependencies:
  permission_handler: ^8.1.2

• Now in your Dart code, you can use:

import 'package:permission_handler/permission_handler.dart';

• While the permissions are being requested during runtime, you’ll still need to tell the OS which permissions your app might potentially use. That requires adding permission configuration to Android- and iOS-specific files.
• For iOS Add the following to your Podfile file:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
    target.build_configurations.each do |config|
            config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
               '$(inherited)',

               ## dart: PermissionGroup.calendar
               'PERMISSION_EVENTS=0',

               ## dart: PermissionGroup.reminders
               'PERMISSION_REMINDERS=0',

               ## dart: PermissionGroup.contacts
               # 'PERMISSION_CONTACTS=0',

               ## dart: PermissionGroup.camera
               # 'PERMISSION_CAMERA=0',

               ## dart: PermissionGroup.microphone
               # 'PERMISSION_MICROPHONE=0',

               ## dart: PermissionGroup.speech
               'PERMISSION_SPEECH_RECOGNIZER=0',

               ## dart: PermissionGroup.photos
               # 'PERMISSION_PHOTOS=0',

               ## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
               'PERMISSION_LOCATION=0',

               ## dart: PermissionGroup.notification
               # 'PERMISSION_NOTIFICATIONS=0',

               ## dart: PermissionGroup.mediaLibrary
               'PERMISSION_MEDIA_LIBRARY=0',

               ## dart: PermissionGroup.sensors
               'PERMISSION_SENSORS=0'
             ]
    end
  end
end

• Remove the # character in front of the permission you do not want to use. For example if you don’t need access to the calendar make sure the code looks like this:

## dart: PermissionGroup.calendar
'PERMISSION_EVENTS=0',

• For Android Add the following to your “gradle.properties” file:

android.useAndroidX=true
android.enableJetifier=true

• Make sure you set the compileSdkVersion in your “android/app/build.gradle” file to 28:

android {
  compileSdkVersion 28
  ...
}

• Make sure you replace all the android. dependencies to their AndroidX counterparts (a full list can be found here: https://developer.android.com/jetpack/androidx/migrate)
• Add permissions to your AndroidManifest.xml file. There’s a debug, main and profile version which are chosen depending on how you start your app. In general, it’s sufficient to add permission only to the main version. Here’s an example AndroidManifest.xml with a complete list of all possible permissions.
• There are a number of Permissions. You can get a Permission‘s status, which is either granted, denied, restricted or permanentlyDenied.

var status = await Permission.photos.status;

if (status.isDenied) {
  // We didn't ask for permission yet.
}

// You can can also directly ask the permission about its status.
if (await Permission.location.isRestricted) {
   // The OS restricts access, for example because of parental controls.
}

• Call request() on a Permission to request it. If it has already been granted before, nothing happens. request() returns the new status of the Permission.

if (await Permission.contacts.request().isGranted) {
  // Either the permission was already granted before or the user just granted it.
}

// You can request multiple permissions at once.
Map<Permission, PermissionStatus> statuses = await [
  Permission.location,
  Permission.storage,
].request();
print(statuses[Permission.location]);

• On Android, you can show a rationale for using permission:

bool isShown = await Permission.contacts.shouldShowRequestRationale;

Faq

Summery

So, It’s All About How to Give Rounded Corner to Container In Flutter?. I hope this tutorial helps you to solve your error. Please Comment Below if You stucks anywhere with my code.

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