iOS Swift - State Management in SwiftUI
How do you properly declare a mutable state variable named
isActive in a SwiftUI view?How do you properly declare a mutable state variable named isActive in a SwiftUI view?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Syntax for @State
The correct syntax is@State var variableName: Type = initialValue.Step 2: Analyze options
Use@State var isActive: Bool = falsecorrectly declares a mutable state variable with initial value false.Final Answer:
@State var isActive: Bool = false -> Option BQuick Check:
@State variables require var and initial value [OK]
Quick Trick: Declare @State with var and initial value [OK]
Common Mistakes:
- Using let instead of var for @State
- Trying to assign @State as a function
- Confusing @State with @Binding
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