├── HidesNavigationBarWhenPushed1.gif
├── HidesNavigationBarWhenPushed2.gif
├── HidesNavigationBarWhenPushed3.gif
├── HidesNavigationBarWhenPushedExample
├── Assets.xcassets
│ ├── Contents.json
│ └── AppIcon.appiconset
│ │ └── Contents.json
├── Info.plist
├── Base.lproj
│ ├── LaunchScreen.storyboard
│ └── Main.storyboard
├── MainViewController.swift
└── AppDelegate.swift
├── HidesNavigationBarWhenPushedExample.xcodeproj
├── xcuserdata
│ └── danilgontovnik.xcuserdatad
│ │ ├── xcdebugger
│ │ └── Breakpoints_v2.xcbkptlist
│ │ └── xcschemes
│ │ └── xcschememanagement.plist
├── project.xcworkspace
│ ├── xcshareddata
│ │ └── IDEWorkspaceChecks.plist
│ └── contents.xcworkspacedata
└── project.pbxproj
├── HidesNavigationBarWhenPushed.podspec
├── LICENSE
├── HidesNavigationBarWhenPushed
├── ViewController.swift
├── NavigationBar.swift
└── NavigationController.swift
└── README.md
/HidesNavigationBarWhenPushed1.gif:
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https://raw.githubusercontent.com/gontovnik/HidesNavigationBarWhenPushed/HEAD/HidesNavigationBarWhenPushed1.gif
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/HidesNavigationBarWhenPushed2.gif:
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https://raw.githubusercontent.com/gontovnik/HidesNavigationBarWhenPushed/HEAD/HidesNavigationBarWhenPushed2.gif
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/HidesNavigationBarWhenPushed3.gif:
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https://raw.githubusercontent.com/gontovnik/HidesNavigationBarWhenPushed/HEAD/HidesNavigationBarWhenPushed3.gif
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/HidesNavigationBarWhenPushedExample/Assets.xcassets/Contents.json:
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1 | {
2 | "info" : {
3 | "version" : 1,
4 | "author" : "xcode"
5 | }
6 | }
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/HidesNavigationBarWhenPushedExample.xcodeproj/xcuserdata/danilgontovnik.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist:
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1 |
2 |
5 |
6 |
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/HidesNavigationBarWhenPushedExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist:
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1 |
2 |
3 |
4 |
5 | IDEDidComputeMac32BitWarning
6 |
7 |
8 |
9 |
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/HidesNavigationBarWhenPushedExample.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
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1 |
2 |
4 |
6 |
7 |
8 |
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/HidesNavigationBarWhenPushedExample.xcodeproj/xcuserdata/danilgontovnik.xcuserdatad/xcschemes/xcschememanagement.plist:
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1 |
2 |
3 |
4 |
5 | SchemeUserState
6 |
7 | HidesNavigationBarWhenPushed.xcscheme
8 |
9 | orderHint
10 | 0
11 |
12 | HidesNavigationBarWhenPushedExample.xcscheme
13 |
14 | orderHint
15 | 0
16 |
17 |
18 |
19 |
20 |
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/HidesNavigationBarWhenPushed.podspec:
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1 | Pod::Spec.new do |s|
2 | s.name = "HidesNavigationBarWhenPushed"
3 | s.version = "1.0.2"
4 | s.summary = "A library, which adds the ability to hide navigation bar when view controller is pushed via hidesNavigationBarWhenPushed flag"
5 | s.homepage = "https://github.com/gontovnik/HidesNavigationBarWhenPushed"
6 | s.license = { :type => "MIT", :file => "LICENSE" }
7 | s.author = { "Danil Gontovnik" => "danil@gontovnik.com" }
8 | s.source = { :git => "https://github.com/gontovnik/HidesNavigationBarWhenPushed.git",
9 | :tag => "#{s.version}" }
10 | s.source_files = "HidesNavigationBarWhenPushed/*.swift"
11 | s.platform = :ios, '11.0'
12 | s.ios.deployment_target = '11.0'
13 | s.ios.frameworks = ['UIKit', 'Foundation']
14 | s.swift_version = '4.1'
15 | end
16 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | The MIT License (MIT)
2 |
3 | Copyright (c) 2018 Danil Gontovnik
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushedExample/Info.plist:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 | CFBundleDevelopmentRegion
6 | $(DEVELOPMENT_LANGUAGE)
7 | CFBundleExecutable
8 | $(EXECUTABLE_NAME)
9 | CFBundleIdentifier
10 | $(PRODUCT_BUNDLE_IDENTIFIER)
11 | CFBundleInfoDictionaryVersion
12 | 6.0
13 | CFBundleName
14 | $(PRODUCT_NAME)
15 | CFBundlePackageType
16 | APPL
17 | CFBundleShortVersionString
18 | 1.0
19 | CFBundleVersion
20 | 1
21 | LSRequiresIPhoneOS
22 |
23 | UILaunchStoryboardName
24 | LaunchScreen
25 | UIMainStoryboardFile
26 | Main
27 | UIRequiredDeviceCapabilities
28 |
29 | armv7
30 |
31 | UISupportedInterfaceOrientations
32 |
33 | UIInterfaceOrientationPortrait
34 | UIInterfaceOrientationLandscapeLeft
35 | UIInterfaceOrientationLandscapeRight
36 |
37 | UISupportedInterfaceOrientations~ipad
38 |
39 | UIInterfaceOrientationPortrait
40 | UIInterfaceOrientationPortraitUpsideDown
41 | UIInterfaceOrientationLandscapeLeft
42 | UIInterfaceOrientationLandscapeRight
43 |
44 |
45 |
46 |
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushed/ViewController.swift:
--------------------------------------------------------------------------------
1 | /*
2 | The MIT License (MIT)
3 | Copyright (c) 2018 Danil Gontovnik
4 | Permission is hereby granted, free of charge, to any person obtaining a copy
5 | of this software and associated documentation files (the "Software"), to deal
6 | in the Software without restriction, including without limitation the rights
7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | copies of the Software, and to permit persons to whom the Software is
9 | furnished to do so, subject to the following conditions:
10 | The above copyright notice and this permission notice shall be included in all
11 | copies or substantial portions of the Software.
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
17 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
18 | SOFTWARE.
19 | */
20 |
21 | import UIKit
22 |
23 | open class ViewController: UIViewController {
24 |
25 | // MARK: - Vars
26 |
27 | open var hidesNavigationBarWhenPushed = false
28 | var viewWillAppearNavigationBarUpdatesBlock: (() -> Void)?
29 |
30 | var fakeNavigationBar: NavigationBar?
31 |
32 | // MARK: - Lifecycle
33 |
34 | override open func viewWillAppear(_ animated: Bool) {
35 | super.viewWillAppear(animated)
36 | viewWillAppearNavigationBarUpdatesBlock?()
37 | viewWillAppearNavigationBarUpdatesBlock = nil
38 | }
39 | }
40 |
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/HidesNavigationBarWhenPushedExample/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushedExample/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
1 | {
2 | "images" : [
3 | {
4 | "idiom" : "iphone",
5 | "size" : "20x20",
6 | "scale" : "2x"
7 | },
8 | {
9 | "idiom" : "iphone",
10 | "size" : "20x20",
11 | "scale" : "3x"
12 | },
13 | {
14 | "idiom" : "iphone",
15 | "size" : "29x29",
16 | "scale" : "2x"
17 | },
18 | {
19 | "idiom" : "iphone",
20 | "size" : "29x29",
21 | "scale" : "3x"
22 | },
23 | {
24 | "idiom" : "iphone",
25 | "size" : "40x40",
26 | "scale" : "2x"
27 | },
28 | {
29 | "idiom" : "iphone",
30 | "size" : "40x40",
31 | "scale" : "3x"
32 | },
33 | {
34 | "idiom" : "iphone",
35 | "size" : "60x60",
36 | "scale" : "2x"
37 | },
38 | {
39 | "idiom" : "iphone",
40 | "size" : "60x60",
41 | "scale" : "3x"
42 | },
43 | {
44 | "idiom" : "ipad",
45 | "size" : "20x20",
46 | "scale" : "1x"
47 | },
48 | {
49 | "idiom" : "ipad",
50 | "size" : "20x20",
51 | "scale" : "2x"
52 | },
53 | {
54 | "idiom" : "ipad",
55 | "size" : "29x29",
56 | "scale" : "1x"
57 | },
58 | {
59 | "idiom" : "ipad",
60 | "size" : "29x29",
61 | "scale" : "2x"
62 | },
63 | {
64 | "idiom" : "ipad",
65 | "size" : "40x40",
66 | "scale" : "1x"
67 | },
68 | {
69 | "idiom" : "ipad",
70 | "size" : "40x40",
71 | "scale" : "2x"
72 | },
73 | {
74 | "idiom" : "ipad",
75 | "size" : "76x76",
76 | "scale" : "1x"
77 | },
78 | {
79 | "idiom" : "ipad",
80 | "size" : "76x76",
81 | "scale" : "2x"
82 | },
83 | {
84 | "idiom" : "ipad",
85 | "size" : "83.5x83.5",
86 | "scale" : "2x"
87 | },
88 | {
89 | "idiom" : "ios-marketing",
90 | "size" : "1024x1024",
91 | "scale" : "1x"
92 | }
93 | ],
94 | "info" : {
95 | "version" : 1,
96 | "author" : "xcode"
97 | }
98 | }
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushedExample/MainViewController.swift:
--------------------------------------------------------------------------------
1 | //
2 | // MainViewController.swift
3 | // HidesNavigationBarWhenPushedExample
4 | //
5 | // Created by Danil Gontovnik on 23/06/2018.
6 | // Copyright © 2018 Danil Gontovnik. All rights reserved.
7 | //
8 |
9 | import UIKit
10 |
11 | final class MainViewController: ViewController {
12 |
13 | // MARK: - Vars
14 |
15 | @IBOutlet weak var scrollView: UIScrollView!
16 |
17 | // MARK: - Lifecycle
18 |
19 | override func loadView() {
20 | super.loadView()
21 |
22 | view.backgroundColor = .white
23 | }
24 |
25 | // MARK: - Methods
26 |
27 | @IBAction func presentWithLargeNavigationBar(_ sender: Any) {
28 | let navigationController = UIStoryboard(name: "Main", bundle: nil).instantiateInitialViewController() as! UINavigationController
29 | navigationController.viewControllers.first?.title = "Large Navigation Bar"
30 | navigationController.navigationBar.prefersLargeTitles = true
31 | self.navigationController?.present(navigationController, animated: true, completion: nil)
32 | }
33 |
34 | @IBAction func presentWithRegularNavigationBar(_ sender: Any) {
35 | let navigationController = UIStoryboard(name: "Main", bundle: nil).instantiateInitialViewController() as! UINavigationController
36 | navigationController.viewControllers.first?.title = "Regular Navigation Bar"
37 | self.navigationController?.present(navigationController, animated: true, completion: nil)
38 | }
39 |
40 | @IBAction func pushWithHiddenNavigationBar(_ sender: Any) {
41 | let mainViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "MainViewController") as! MainViewController
42 | mainViewController.title = "Hidden Navigation Bar"
43 | mainViewController.hidesNavigationBarWhenPushed = true
44 | navigationController?.pushViewController(mainViewController, animated: true)
45 | }
46 |
47 | @IBAction func push(_ sender: Any) {
48 | let mainViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "MainViewController") as! MainViewController
49 | mainViewController.title = "Pushed"
50 | navigationController?.pushViewController(mainViewController, animated: true)
51 | }
52 | }
53 |
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushedExample/AppDelegate.swift:
--------------------------------------------------------------------------------
1 | //
2 | // AppDelegate.swift
3 | // HidesNavigationBarWhenPushedExample
4 | //
5 | // Created by Danil Gontovnik on 23/06/2018.
6 | // Copyright © 2018 Danil Gontovnik. All rights reserved.
7 | //
8 |
9 | import UIKit
10 |
11 | @UIApplicationMain
12 | class AppDelegate: UIResponder, UIApplicationDelegate {
13 |
14 | var window: UIWindow?
15 |
16 |
17 | func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
18 | // Override point for customization after application launch.
19 | return true
20 | }
21 |
22 | func applicationWillResignActive(_ application: UIApplication) {
23 | // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
24 | // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
25 | }
26 |
27 | func applicationDidEnterBackground(_ application: UIApplication) {
28 | // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
29 | // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
30 | }
31 |
32 | func applicationWillEnterForeground(_ application: UIApplication) {
33 | // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
34 | }
35 |
36 | func applicationDidBecomeActive(_ application: UIApplication) {
37 | // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
38 | }
39 |
40 | func applicationWillTerminate(_ application: UIApplication) {
41 | // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
42 | }
43 |
44 |
45 | }
46 |
47 |
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushed/NavigationBar.swift:
--------------------------------------------------------------------------------
1 | /*
2 | The MIT License (MIT)
3 | Copyright (c) 2018 Danil Gontovnik
4 | Permission is hereby granted, free of charge, to any person obtaining a copy
5 | of this software and associated documentation files (the "Software"), to deal
6 | in the Software without restriction, including without limitation the rights
7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | copies of the Software, and to permit persons to whom the Software is
9 | furnished to do so, subject to the following conditions:
10 | The above copyright notice and this permission notice shall be included in all
11 | copies or substantial portions of the Software.
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
17 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
18 | SOFTWARE.
19 | */
20 |
21 | import UIKit
22 |
23 | open class NavigationBar: UINavigationBar {
24 |
25 | // MARK: - Vars
26 |
27 | var height: CGFloat?
28 |
29 | private var backgroundView: UIView? {
30 | return value(forKey: "_backgroundView") as? UIView
31 | }
32 |
33 | var isBackgroundViewHidden = false {
34 | didSet {
35 | backgroundView?.isHidden = isBackgroundViewHidden
36 | }
37 | }
38 |
39 | // MARK: - Constructors
40 |
41 | override public init(frame: CGRect) {
42 | super.init(frame: frame)
43 | commonInit()
44 | }
45 |
46 | required public init?(coder aDecoder: NSCoder) {
47 | super.init(coder: aDecoder)
48 | commonInit()
49 | }
50 |
51 | private func commonInit() {
52 | backgroundView?.addObserver(self, forKeyPath: "hidden", options: .new, context: nil)
53 | }
54 |
55 | // MARK: -
56 |
57 | deinit {
58 | backgroundView?.removeObserver(self, forKeyPath: "hidden")
59 | }
60 |
61 | // MARK: - Methods
62 |
63 | override open func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
64 | if backgroundView?.isHidden != isBackgroundViewHidden {
65 | backgroundView?.isHidden = isBackgroundViewHidden
66 | }
67 | }
68 |
69 | func copyNavigationBar() -> NavigationBar {
70 | let navigationBar = NavigationBar()
71 | navigationBar.barStyle = barStyle
72 | navigationBar.isTranslucent = isTranslucent
73 | navigationBar.tintColor = tintColor
74 | navigationBar.barTintColor = barTintColor
75 | navigationBar.setBackgroundImage(backgroundImage(for: .default), for: .default)
76 | navigationBar.setBackgroundImage(backgroundImage(for: .compact), for: .compact)
77 | navigationBar.setBackgroundImage(backgroundImage(for: .defaultPrompt), for: .defaultPrompt)
78 | navigationBar.setBackgroundImage(backgroundImage(for: .compactPrompt), for: .compactPrompt)
79 | navigationBar.shadowImage = shadowImage?.copy() as? UIImage
80 | navigationBar.prefersLargeTitles = prefersLargeTitles
81 | return navigationBar
82 | }
83 |
84 | // MARK: - Layout
85 |
86 | override open func layoutSubviews() {
87 | super.layoutSubviews()
88 |
89 | if let height = height {
90 | backgroundView?.frame.origin.y = bounds.height - height
91 | backgroundView?.frame.size.height = height
92 | }
93 | }
94 | }
95 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # HidesNavigationBarWhenPushed
2 |
3 | A library, which adds the ability to hide navigation bar when view controller is pushed via `hidesNavigationBarWhenPushed` flag.
4 |
5 | **FYI: I use Apple internal API to make it work. Please remember that Apple might reject your app during app review process.**
6 |
7 | ## Context
8 |
9 | While hacking on various projects, time to time I get designs where view controller A has navigation bar, and view controller B doesn't have it. It was always a pain to make it work. I decided to hack on that – and this is the result of that.
10 |
11 | I hope that many people will find it useful too.
12 |
13 | ## Demo
14 |
15 | ### With interactive pop gesture recognizer
16 |
17 | 
18 |
19 | ### Regular push and pop
20 |
21 | 
22 | 
23 |
24 | ## Requirements
25 | * Xcode 9 or higher
26 | * iOS 11.0 or higher (may work on previous versions, just did not test it)
27 | * ARC
28 | * Swift 4.1
29 |
30 | ## Example project
31 |
32 | Open and run the **HidesNavigationBarWhenPushedExample** project in Xcode to see **HidesNavigationBarWhenPushed** in action.
33 |
34 | ## Installation
35 |
36 | ### CocoaPods
37 |
38 | ``` ruby
39 | pod 'HidesNavigationBarWhenPushed'
40 | ```
41 |
42 | ### Manual
43 |
44 | Add **HidesNavigationBarWhenPushed** folder into your project.
45 |
46 | ## Usage
47 |
48 | 1. Use provided `NavigationController` instead of `UINavigationController`
49 | 2. Use provided `ViewController` instead of `UIViewController`
50 | 3. Use provided `NavigationBar` instead of `UINavigationBar` (make sure you specify this explicitly when using Interface Builder)
51 |
52 | `ViewController` contains a single property you have to worry about: `hidesNavigationBarWhenPushed`.
53 |
54 | If value on the new view controller is set to `true` and on the current view controller is set to `false`, then when new view controller is pushed, navigation bar will remain in the previous view controller. If value on the new view controller set to `false` and on the current view controller is set to `false`, then when new view controller is pushed, navigation bar will be present only in the new view controller, but not in the current.
55 |
56 | If it sounds confusing, please see the demo above.
57 |
58 | ## Contributions
59 |
60 | Contributions are always welcome!
61 |
62 | ## Contact
63 |
64 | Danil Gontovnik
65 |
66 | - https://github.com/gontovnik
67 | - https://twitter.com/gontovnik
68 | - http://gontovnik.com/
69 | - danil@gontovnik.com
70 |
71 | ## License
72 |
73 | The MIT License (MIT)
74 |
75 | Copyright (c) 2018 Danil Gontovnik
76 |
77 | Permission is hereby granted, free of charge, to any person obtaining a copy
78 | of this software and associated documentation files (the "Software"), to deal
79 | in the Software without restriction, including without limitation the rights
80 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
81 | copies of the Software, and to permit persons to whom the Software is
82 | furnished to do so, subject to the following conditions:
83 |
84 | The above copyright notice and this permission notice shall be included in all
85 | copies or substantial portions of the Software.
86 |
87 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
88 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
89 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
90 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
91 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
92 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
93 | SOFTWARE.
94 |
--------------------------------------------------------------------------------
/HidesNavigationBarWhenPushed/NavigationController.swift:
--------------------------------------------------------------------------------
1 | /*
2 | The MIT License (MIT)
3 | Copyright (c) 2018 Danil Gontovnik
4 | Permission is hereby granted, free of charge, to any person obtaining a copy
5 | of this software and associated documentation files (the "Software"), to deal
6 | in the Software without restriction, including without limitation the rights
7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 | copies of the Software, and to permit persons to whom the Software is
9 | furnished to do so, subject to the following conditions:
10 | The above copyright notice and this permission notice shall be included in all
11 | copies or substantial portions of the Software.
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
17 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
18 | SOFTWARE.
19 | */
20 |
21 | import UIKit
22 |
23 | open class NavigationController: UINavigationController {
24 |
25 | // MARK: - Types
26 |
27 | private typealias TransitionCompletion = (() -> Void)
28 |
29 | // MARK: - Vars
30 |
31 | private var _navigationBar: NavigationBar {
32 | return navigationBar as! NavigationBar
33 | }
34 |
35 | private var transitionCompletions = [UIViewController: TransitionCompletion]()
36 |
37 | // MARK: - Constructors
38 |
39 | public init() {
40 | super.init(navigationBarClass: NavigationBar.self, toolbarClass: nil)
41 | }
42 |
43 | override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
44 | super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
45 | }
46 |
47 | // MARK: -
48 |
49 | override public init(rootViewController: UIViewController) {
50 | super.init(navigationBarClass: NavigationBar.self, toolbarClass: nil)
51 | viewControllers = [rootViewController]
52 | commonInit()
53 | }
54 |
55 | public required init?(coder aDecoder: NSCoder) {
56 | super.init(coder: aDecoder)
57 | commonInit()
58 | }
59 |
60 | private func commonInit() {
61 | delegate = self
62 | if let viewController = viewControllers.first as? ViewController, viewController.hidesNavigationBarWhenPushed {
63 | forceHideNavigationBar()
64 | }
65 | }
66 |
67 | // MARK: - Methods
68 |
69 | override open func pushViewController(_ viewController: UIViewController, animated: Bool) {
70 | let currentViewController = viewControllers.last
71 |
72 | if let currentViewController = currentViewController as? ViewController,
73 | let viewController = viewController as? ViewController,
74 | isNavigationBarHidden == false {
75 | if currentViewController.hidesNavigationBarWhenPushed == false && viewController.hidesNavigationBarWhenPushed == true {
76 | let fakeNavigationBar = addFakeNavigationBar(to: currentViewController)
77 | currentViewController.fakeNavigationBar = fakeNavigationBar
78 | _navigationBar.isBackgroundViewHidden = true
79 | } else if currentViewController.hidesNavigationBarWhenPushed == true && viewController.hidesNavigationBarWhenPushed == false {
80 | let fakeNavigationBar = _navigationBar.copyNavigationBar()
81 |
82 | viewController.viewWillAppearNavigationBarUpdatesBlock = { [weak self] in
83 | guard let strongSelf = self else { return }
84 | viewController.view.addSubview(fakeNavigationBar)
85 | strongSelf.layout(fakeNavigationBar: fakeNavigationBar, within: viewController)
86 | }
87 |
88 | setTransitionCompletion(for: viewController) { [weak self] in
89 | fakeNavigationBar.removeFromSuperview()
90 | self?._navigationBar.isBackgroundViewHidden = false
91 | }
92 | }
93 | }
94 | super.pushViewController(viewController, animated: true)
95 | }
96 |
97 | @discardableResult override open func popViewController(animated: Bool) -> UIViewController? {
98 | if viewControllers.count > 1 {
99 | if let currentViewController = viewControllers.last as? ViewController,
100 | let previousViewController = viewControllers[viewControllers.count - 2] as? ViewController {
101 | return pop(from: currentViewController, to: previousViewController, animated: animated)
102 | }
103 | }
104 | return super.popViewController(animated: animated)
105 | }
106 |
107 | @discardableResult override open func popToRootViewController(animated: Bool) -> [UIViewController]? {
108 | if viewControllers.count > 1 {
109 | if let currentViewController = viewControllers.last as? ViewController,
110 | let previousViewController = viewControllers.first as? ViewController {
111 | return [pop(from: currentViewController, to: previousViewController, animated: animated)]
112 | }
113 | }
114 | return super.popToRootViewController(animated: animated)
115 | }
116 |
117 | fileprivate func pop(from currentViewController: ViewController, to previousViewController: ViewController, animated: Bool) -> UIViewController {
118 | if currentViewController.hidesNavigationBarWhenPushed == true && previousViewController.hidesNavigationBarWhenPushed == false {
119 | setTransitionCompletion(for: previousViewController) { [weak self] in
120 | previousViewController.fakeNavigationBar?.removeFromSuperview()
121 | previousViewController.fakeNavigationBar = nil
122 | self?._navigationBar.isBackgroundViewHidden = false
123 | }
124 | } else if currentViewController.hidesNavigationBarWhenPushed == false && previousViewController.hidesNavigationBarWhenPushed == true {
125 | let fakeNavigationBar = addFakeNavigationBar(to: currentViewController)
126 | _navigationBar.isBackgroundViewHidden = true
127 | currentViewController.viewWillAppearNavigationBarUpdatesBlock = { [weak self] in
128 | self?._navigationBar.isBackgroundViewHidden = false
129 | fakeNavigationBar.removeFromSuperview()
130 | }
131 | }
132 | super.popToViewController(previousViewController, animated: animated)
133 | return currentViewController
134 | }
135 |
136 | // MARK: -
137 |
138 | override open func setNavigationBarHidden(_ hidden: Bool, animated: Bool) {
139 | super.setNavigationBarHidden(hidden, animated: animated)
140 | if let viewController = visibleViewController as? ViewController, viewController.hidesNavigationBarWhenPushed && hidden == false {
141 | forceHideNavigationBar()
142 | }
143 | }
144 |
145 | private func setTransitionCompletion(for viewController: UIViewController, completion: @escaping TransitionCompletion) {
146 | transitionCompletions[viewController] = completion
147 | }
148 |
149 | private func forceHideNavigationBar() {
150 | _navigationBar.isBackgroundViewHidden = true
151 | }
152 |
153 | private func addFakeNavigationBar(to viewController: ViewController) -> NavigationBar {
154 | let fakeNavigationBar = _navigationBar.copyNavigationBar()
155 | viewController.view.addSubview(fakeNavigationBar)
156 | layout(fakeNavigationBar: fakeNavigationBar, within: viewController)
157 | return fakeNavigationBar
158 | }
159 |
160 | private func layout(fakeNavigationBar: NavigationBar, within viewController: UIViewController) {
161 | var rect = navigationBar.frame
162 | rect = navigationBar.superview?.convert(rect, to: viewController.view) ?? rect
163 | fakeNavigationBar.frame = rect
164 | fakeNavigationBar.height = rect.origin.y + rect.height
165 | }
166 | }
167 |
168 | // MARK: - UINavigationControllerDelegate
169 |
170 | extension NavigationController: UINavigationControllerDelegate {
171 | public func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
172 | if let transitionCompletion = transitionCompletions[viewController] {
173 | transitionCompletion()
174 | transitionCompletions.removeValue(forKey: viewController)
175 | }
176 | }
177 |
178 | public func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
179 | }
180 | }
181 |
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/HidesNavigationBarWhenPushedExample/Base.lproj/Main.storyboard:
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--------------------------------------------------------------------------------
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