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Understanding State in Jetpack Compose (Simple Guide for Beginners)

DEV Community·MD IBRAHIM KHALIL·21 days ago
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When I first started learning Jetpack Compose, one concept confused me a lot: State. But once I understood it, everything became much easier. Let me explain it in a simple way 👇 🔄 What is State? Think of State like a light switch. When the switch changes → the light updates When state changes → the UI updates In Jetpack Compose, UI is automatically redrawn when state changes. 🧩 Basic Example @Composable fun CounterScreen () { var count by remember { mutableStateOf ( 0 ) } Column { Text ( text = "Count: $count" ) Button ( onClick = { count ++ }) { Text ( "Increase" ) } } } Enter fullscreen mode Exit fullscreen mode 🧠 What’s happening here? remember → keeps value during recomposition mutableStateOf → creates observable state count++ → updates state → UI updates automatically 👉 You don’t manually refresh UI. Compose does it for you. ⚠️ Common Beginner Mistakes ❌ Mistake 1: Not using remember var count = 0 // WRONG Enter fullscreen mode Exit fullscreen mode 👉 This resets on every recomposition.…

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