Slider in iOS Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a slider with a minimum value of 0.

iOS Swift

let slider = UISlider()
slider.minimumValue = [1]

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

A0

B1

C-1

D100

Attempts:

3 left

💡 Hint

Common Mistakes

Setting minimumValue to a value higher than maximumValue.

Using a negative number when only positive values are expected.

The minimumValue property sets the lowest value the slider can have. Setting it to 0 means the slider starts from zero.

2fill in blank

medium

Complete the code to set the slider's maximum value to 50.

iOS Swift

let slider = UISlider()
slider.maximumValue = [1]

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

A0

B50

C100

D-50

Attempts:

3 left

💡 Hint

Common Mistakes

Setting maximumValue lower than minimumValue.

Using negative numbers for maximumValue.

The maximumValue property defines the highest value the slider can reach. Setting it to 50 limits the slider's range from minimumValue up to 50.

3fill in blank

hard

Fix the error in the code to set the slider's current value to 25.

iOS Swift

let slider = UISlider()
slider.value = [1]

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

Anil

B"25"

Cslider.maximumValue

D25

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around numbers, making them strings.

Assigning nil to a non-optional property.

The value property expects a Float number, not a string or nil. So 25 without quotes is correct.

4fill in blank

hard

Fill both blanks to create a slider with a minimum value of 10 and a maximum value of 100.

iOS Swift

let slider = UISlider()
slider.minimumValue = [1]
slider.maximumValue = [2]

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

A10

B0

C100

D50

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping minimum and maximum values.

Setting minimum higher than maximum.

Setting minimumValue to 10 and maximumValue to 100 defines the slider's range from 10 to 100.

5fill in blank

hard

Fill all three blanks to create a slider, set its range from 0 to 200, and set its initial value to 75.

iOS Swift

let slider = UISlider()
slider.minimumValue = [1]
slider.maximumValue = [2]
slider.value = [3]

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

A0

B200

C75

D100

Attempts:

3 left

💡 Hint

Common Mistakes

Setting initial value outside the min-max range.

Confusing maximum and initial values.

This code sets the slider's minimum to 0, maximum to 200, and starts the slider at 75.