📱 TabBar – highly customizable tab bar for your SwiftUI application.

Related tags

Tab Bar swift ios library xcode view uitabbar tabbar bar tab uitabbarcontroller tabview swiftui custom-tabbar custom-tab-bar custom-tab-view custom-tabview
Overview

TabBar

SwiftUI standard TabView component is not so flexible and to customize it you have to modify appearance proxy of UITabBar or implement your own one from scratch. The goal of this library is to solve this problem.

Table of contents

Requirements

  • SwiftUI
  • iOS 13.0 or above

Installation

TabBar is available through Swift Package Manager

Swift Package Manager

  • In Xcode select:

    File > Swift Packages > Add Package Dependency...

  • Then paste this URL:

    https://github.com/onl1ner/TabBar.git

Usage

To start using TabBar you have to create an enum which will implement Tabbable protocol:

enum Item: Int, Tabbable {
    case first = 0
    case second
    case third
    
    var icon: String {
        switch self {
            case .first:  // Name of icon of first item.
            case .second: // Name of icon of second item.
            case .third:  // Name of icon of third item.
        }
    }
    
    var title: String {
        switch self {
            case .first:  // Title of first item.
            case .second: // Title of second item.
            case .third:  // Title of third item.
        }
    }
}

After that you will be able to create TabBar instance:

struct ContentView: View {
    @State private var selection: Item = .first

    var body: some View {
        TabBar(selection: $selection) {
            Text("First")
                .tabItem(for: Item.first)

            Text("Second")
                .tabItem(for: Item.second)

            Text("Third")
                .tabItem(for: Item.third)
        }
    }
}

After these actions tab bar with default style will be created.

Customization

TabBar component is highly customizable. This is achieved by introducing TabBarStyle and TabItemStyle protocols. By implementing each of the protocol you will be able to build your custom tab bar. NOTE that TabBar automaticaly pushes down to bottom any of tab bar styles.

After creating your custom styles you may inject them to your tab bar by using tabBar(style:) and tabItem(style:) functions. Here is the showcase of default style and one of the examples of what you can achieve by customizing tab bar:

Contribution

If you struggle with something feel free to open an issue. Pull requests are also appreciated.

License

TabBar is under the terms and conditions of the MIT license.

MIT License

Copyright (c) 2021 Tamerlan Satualdypov

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Comments
  • TabBar content did not appear (render) in iOS14.0

    TabBar content did not appear (render) in iOS14.0

    In iOS14.0, I use TabBar in a NavigationView, content of the tabbar is invisible, but CustomTabBarStyle works.Without NavigationView, all things go well.

    question 
    opened by Ccapton 6
  • Hide/Show TabBar

    Hide/Show TabBar

    hey, great work really. Is it possible to hide the navbar? (remove from screen)| The idea is when a user clicks on a navigation button and go to another view the navbar should fall down and when the user click on Back button it should appear again.

    enhancement 
    opened by onisiforos7 5
  • Issue #1 - Hide/Show TabBar

    Issue #1 - Hide/Show TabBar

    Hey! I find your TabBar very cool and felt like contributing something to it. I'm still pretty new to Swift, so my solution may not be the prettiest. Have a look over it and tell me what you think. 😉

    Changes

    • Implemented a visibility property that can be used to hide the TabBar on demand

    • Adapted the example code to showcase new functionality

    • Adapted README according to new example code

    enhancement 
    opened by bgeisb 0
  • How to hide tabor dynamically

    How to hide tabor dynamically

    Is it possible to hide tab bar when user selects second tab item only, for example? I want to have several items and if selects first item tabbar should be show but for another (or navigation links) - not.

    question 
    opened by st-small 1
  • It seems the page will be recreated when switch between tabs each time.

    It seems the page will be recreated when switch between tabs each time. 

    struct ContentView: View {
    
    private enum Item: Int, Tabbable {
        case first = 0
        case second
        case third
        
        var icon: String {
            switch self {
                case .first: return "house"
                case .second: return "magnifyingglass"
                case .third: return "person"
            }
        }
        
        var title: String {
            switch self {
                case .first: return "First"
                case .second: return "Second"
                case .third: return "Third"
            }
        }
    }
    
    @State private var selection: Item = .first
    @State private var visibility: TabBarVisibility = .visible
    
    var body: some View {
        TabBar(selection: $selection, visibility: $visibility) {
            Button {
                withAnimation {
                    visibility.toggle()
                }
            } label: {
                Text("Hide/Show TabBar")
            }
            .tabItem(for: Item.first)
            
			Second()
                .tabItem(for: Item.second)
            
            Text("Third")
                .tabItem(for: Item.third)
        }
        .tabBar(style: CustomTabBarStyle())
        .tabItem(style: CustomTabItemStyle())
    }
}

struct ContentSystemTabView: View {
	var body: some View {
		TabView {
			Text("First")
				.tabItem {
					Text("first")
				}

			Second()
				.tabItem {
					Text("second")
				}
		}
	}
}

struct Second: View {
	init() {
		print("init...")
	}
	var body: some View {
		Text("Second")
	}
}

    You will find the difference between TabView.

    enhancement help wanted 
    opened by Horse888 2
Owner
Tamerlan Satualdypov
Left brain for code, right brain for design. Self-educated iOS developer from Kazakhstan. Love open source.
Tamerlan Satualdypov
GitHub
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