Image composable in Android Kotlin - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the Image composable in Jetpack Compose?

The Image composable is used to display images in a Compose UI. It can show images from resources, bitmaps, or other sources.

beginner

How do you load a drawable resource into an Image composable?

Use painterResource(id = R.drawable.your_image) as the painter parameter in the Image composable.

beginner

What parameter do you use to provide a description for accessibility in the Image composable?

Use the contentDescription parameter to provide a text description for screen readers and accessibility tools.

intermediate

How can you change the size of an Image composable?

You can use the Modifier.size() or Modifier.width() and Modifier.height() to set the size of the Image.

intermediate

What does the contentScale parameter do in the Image composable?

The contentScale parameter controls how the image fits into the space, such as cropping, fitting, or filling the bounds.

Which function is used to load a drawable resource into an Image composable?

A painterResource()

B loadImage()

C imageResource()

D drawablePainter()

The painterResource() function loads drawable resources for use in the Image composable.

What is the purpose of the contentDescription parameter in the Image composable?

A To provide accessibility description

B To change image color

C To set the image size

D To load image from URL

The contentDescription provides a text description for screen readers to improve accessibility.

Which modifier would you use to set the width and height of an Image?

A Modifier.padding()

B Modifier.size()

C Modifier.background()

D Modifier.clickable()

Modifier.size() sets both width and height of the composable.

What does contentScale = ContentScale.Crop do in an Image composable?

A Scales image to fit inside bounds without cropping

B Scales image to original size

C Scales image to fill bounds and crops excess

D Does not scale image

ContentScale.Crop scales the image to fill the space and crops parts that overflow.

Which of these is NOT a valid source for an Image composable?

A Bitmap

B Drawable resource

C Vector asset

D Raw text file

Raw text files cannot be used as image sources in the Image composable.

Explain how to display an image from drawable resources using the Image composable in Jetpack Compose.

Think about how you load images and how you make them accessible.

Describe how you can control the size and scaling behavior of an image in Jetpack Compose.

Consider modifiers and contentScale options.