Hive for NoSQL storage in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to open a Hive box named 'settings'.

Flutter

var box = await Hive.[1]('settings');

Drag options to blanks, or click blank then click option'

AdeleteBox

BcloseBox

CopenBox

DcreateBox

Attempts:

3 left

💡 Hint

Common Mistakes

Using closeBox instead of openBox

Trying to createBox which doesn't exist

Use openBox to open or create a box in Hive.

2fill in blank

medium

Complete the code to add a value 'dark' with key 'theme' to the box.

Flutter

await box.[1]('theme', 'dark');

Drag options to blanks, or click blank then click option'

Aget

Bput

Cdelete

Dclear

Attempts:

3 left

💡 Hint

Common Mistakes

Using get instead of put

Using delete or clear which remove data

Use put to store a value with a key in Hive.

3fill in blank

hard

Fix the error in the code to read the value for key 'username' from the box.

Flutter

var username = box.[1]('username');

Drag options to blanks, or click blank then click option'

Aput

Bclear

Cdelete

Dget

Attempts:

3 left

💡 Hint

Common Mistakes

Using put instead of get

Using delete or clear which remove data

Use get to read a value by key from Hive box.

4fill in blank

hard

Fill both blanks to delete the key 'token' and then close the box.

Flutter

await box.[1]('token');
await box.[2]();

Drag options to blanks, or click blank then click option'

Adelete

Bclose

Cput

Dget

Attempts:

3 left

💡 Hint

Common Mistakes

Using put or get instead of delete

Not closing the box properly

Use delete to remove a key and close to close the box.

5fill in blank

hard

Fill all three blanks to create a map of all keys and values where values are not null.

Flutter

var allData = {for (var key in box.[1]) if (box.[3](key) != null) key: box.[2](key)};

Drag options to blanks, or click blank then click option'

Akeys

Bget

Dvalues

Attempts:

3 left

💡 Hint

Common Mistakes

Using values instead of keys for iteration

Using wrong method to get values

Use keys to iterate keys, and get to get values.