1. Jetpack Compose transforms state into UI using the following three phase process.
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Composition, Layout, Drawing
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Measurement, Placement, Layout
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Layout, Drawing, Placement
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Placement, Composition, Layout
2. ___ executes your composable functions, which can emit UI and create a UI tree.
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Layout
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Placement
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Drawing
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Composition
3. Once all elements are measured in size during the Layout phase, the tree is walked again and all placement instructions are executed in the ___ step.
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Measurement
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Drawing
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Placement
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Composition
4. A Constraints object tells the layout:
Choose as many answers as you see fit.
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It can be as large as it likes
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Where to place each item
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How small it can be
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The maximum width and height of the layout
5. Which of the following is NOT true about the layout modifier:
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It’s used to modify how an element is measured.
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It’s a lambda.
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Its content is executed during the Drawing phase.
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It’s used to modify how an element is laid out.
6. Rendering a scrollable set of items as they become visible on the screen, rather than all at once, is the main concept behind:
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Optimization
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Lazy layouts
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A scrollable column
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The
verticalScroll()modifier
7. True or False: Compose uses a single pass layout system.
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True
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False
Why
I think the True is: Compose uses a single pass measurement system, not single pass layout system.
8. To adjust an animation’s fraction, which lets the animating value speed up and slow down, use ___.
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Tween
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Stiffness
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Easing
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Snap
/**
* Easing is a way to adjust an animation’s fraction. Easing allows transitioning
* elements to speed up and slow down, rather than moving at a constant rate.
*
* Fraction is a value between 0 and 1.0 indicating our current point in
* the animation where 0 represents the start and 1.0 represents the end.
*
* An [Easing] must map fraction=0.0 to 0.0 and fraction=1.0 to 1.0.
*/
@Stable
fun interface Easing {
fun transform(fraction: Float): Float
}
