SizedBox and Padding in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a fixed space of 20 pixels height between widgets using SizedBox.

Flutter

SizedBox(height: [1]),

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

A0

B50

C10

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Using width instead of height for vertical space.

Setting height to 0 which creates no space.

The height property of SizedBox sets the vertical space. Here, 20 pixels creates the fixed space.

2fill in blank

medium

Complete the code to add 16 pixels padding on all sides around a Text widget.

Flutter

Padding(padding: EdgeInsets.all([1]), child: Text('Hello')),

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

A8

B24

C16

D32

Attempts:

3 left

💡 Hint

Common Mistakes

Using EdgeInsets.symmetric instead of EdgeInsets.all for equal padding.

Using too small or too large padding values.

EdgeInsets.all(16) adds 16 pixels of padding on every side of the child widget.

3fill in blank

hard

Fix the error in the code to create horizontal space of 30 pixels using SizedBox.

Flutter

SizedBox(width: [1]),

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

A30

B'30'

C30.0

Dnull

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around numbers causing type errors.

Passing null which causes runtime errors.

The width property expects a number without quotes. Using 30 (an integer) is correct.

4fill in blank

hard

Fill both blanks to add vertical padding of 10 and horizontal padding of 20 around a Container.

Flutter

Padding(padding: EdgeInsets.symmetric(vertical: [1], horizontal: [2]), child: Container()),

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

A10

B15

C20

D25

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping vertical and horizontal values.

Using EdgeInsets.all instead of symmetric for different padding.

EdgeInsets.symmetric takes vertical and horizontal values separately. Here, vertical is 10 and horizontal is 20 pixels.

5fill in blank

hard

Fill all three blanks to create a SizedBox with width 100, height 50, and a child Text widget.

Flutter

SizedBox(width: [1], height: [2], child: Text('[3]')),

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

A100

B50

CHello

DWorld

Attempts:

3 left

💡 Hint

Common Mistakes

Putting numbers inside quotes.

Using wrong text string or missing quotes around text.

The SizedBox sets width and height to 100 and 50 pixels respectively, and the child Text widget displays 'Hello'.