> For the complete documentation index, see [llms.txt](https://eneskaraosman53.gitbook.io/swiftui/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eneskaraosman53.gitbook.io/swiftui/ui-components/tabview.md).

# TabView

```swift
// Tab geçişlerinin gerçekleştiğini gözlemlemek için
// bir dummy view oluşturalım.
struct SampleTabView: View {
    
    let title: String
    
    var body: some View {
        Text(title)
    }
    
}

struct TabContainerView: View {
    var body: some View {
        TabView {
        
            SampleTabView(title: "Tab - 1")
                .tabItem {
                    Image(systemName: "1.circle.fill")
                    Text("Tab-1").bold()
                }
            
            SampleTabView(title: "Tab - 2")
                .tabItem {
                    Image(systemName: "2.circle.fill")
                    Text("Tab-2").bold()
                }
            
            SampleTabView(title: "Tab - 3")
                .tabItem {
                    Image(systemName: "3.circle.fill")
                    Text("Tab-3").bold()
                }
        }
    }
}
```

![](/files/-M5vLabAo76eBh65d4wO)

**tabItem** düzenleyicisini kullandığımızda `Image` ve `Text` bileşenlerini bizim için otomatik olarak yerleştirir.

#### Ekstra

Sekmeler (Tab (View)) arasında **@EnvironmentObject** kullanarak veri paylaşımı yapabiliriz.

```swift
// Demo için bir dummy class oluşturalım.
class User: Identifiable, Codable {
    var id = UUID()
    var name = ""
}

// EnvironmentObject
class UserService: ObservableObject {
    @Published var users: [User]

    init () {
        self.users = []
    }
}

struct TabContainerView: View {
    var userService = UserService()
    
    var body some: View {
        SampleTabView { .. }
            .environmentObject(userService)
            // Paylaşmak istediğimiz veriyi
            // Bu senaryoda UserService, bu şekilde environmentObject'e
            // argüman olarak geçiyoruz.
    }
}

// Tab View
struct SampleTabView: View {
    @EnvironmentObject var userService: UserService
    // Tab View içinde de bu şekilde, referans olarak geçtiğimiz
    // UserService'e tekrar erişebiliriz.
    
    var body: some View { .. }
}
```

`@EnvironmentObject` kullandığımız zaman SwiftUI, `View` oluşturulduğunda bu o objenin de hazır olduğuna emin oluyor


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