
MutableStateof, by & Remember Keywords in Compose – Jetpack Compose Course #11
Video by Master Coding via YouTube
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πππ What Youβll Learn in This Video ππ
ππ State management in Jetpack Compose is crucial for creating responsive and interactive UI components. Unlike the traditional View-based system, Jetpack Compose follows a declarative UI paradigm, meaning the UI is rebuilt in response to state changes rather than being modified imperatively.
In Jetpack Compose, remember and mutableStateOf are used together to create and retain state across recompositions.
mutableStateOf(value): Creates a mutable state variable that triggers recomposition when its value changes.
remember {}: Ensures the state is retained during recompositions (but lost when the composition disappears).
Example:
kotlin
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Edit
var count by remember { mutableStateOf(0) }
Button(onClick = { count++ }) {
Text("Count: $count")
}
Here, count is remembered and updated when the button is clicked, causing the UI to recompose with the new value.
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