Permissions handling in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the permissions package in Flutter.

Flutter

import '[1]';

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Apackage:flutter/material.dart

Bpackage:flutter/widgets.dart

Cpackage:flutter/services.dart

Dpackage:permission_handler/permission_handler.dart

Attempts:

3 left

💡 Hint

Common Mistakes

Importing core Flutter packages instead of the permissions package.

Forgetting to add the permission_handler package to pubspec.yaml.

To handle permissions in Flutter, you need to import the permission_handler package.

2fill in blank

medium

Complete the code to request camera permission using permission_handler.

Flutter

var status = await Permission.[1].request();

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Alocation

Bcamera

Cstorage

Dmicrophone

Attempts:

3 left

💡 Hint

Common Mistakes

Requesting the wrong permission type.

Not awaiting the request call.

To request camera permission, use Permission.camera.request().

3fill in blank

hard

Fix the error in checking if permission is granted.

Flutter

if (await Permission.[1].isGranted) {
  print('Permission granted');
}

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Acamera

Brequest

Cstatus

Dcheck

Attempts:

3 left

💡 Hint

Common Mistakes

Using method names like 'request' or 'check' instead of permission types.

Not awaiting the isGranted call.

You check if a specific permission like camera is granted by calling Permission.camera.isGranted.

4fill in blank

hard

Fill both blanks to check and request microphone permission if not granted.

Flutter

if (!await Permission.[1].[2]) {
  await Permission.microphone.request();
}

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Amicrophone

BisDenied

CisGranted

DisRestricted

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'isDenied' or 'isRestricted' instead of 'isGranted' for checking permission.

Checking a different permission than microphone.

You check if the microphone permission is granted by Permission.microphone.isGranted. If not granted, you request it.

5fill in blank

hard

Fill all three blanks to create a map of permissions and their statuses filtering only granted ones.

Flutter

var grantedPermissions = {
  [1]: [2] for [3] in permissions
  if ([2].isGranted)
};

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Aperm

Bstatus

Dpermissions

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing variable names or using the same name for different roles.

Not filtering permissions correctly.

This code loops over permissions with variable perm, gets status for each, and keeps only those where status.isGranted is true.