UISegmentedControl在iOS 7中的UINavigationbar下面
如何将UISegmentedControl作为UINavigationBar下方UINavigationBar的一部分？它是否连接到UINavigationController，还是一个完整的单独视图，只是作为子视图添加到UINavigationBar的视图控制器中。看起来它是{{1}}的一部分，因为栏下面有一个阴影。
10 个答案:
答案 0 :(得分：148)
这是一个简单的效果。
首先，将一个片段放在工具栏中。将此工具栏放在导航栏的正下方。将工具栏的委托设置为视图控制器，然后在UIBarPositionTopAttached中返回positionForBar:。您可以在商店应用中看到，如果您执行交互式弹出手势，则段栏的移动方式与导航栏不同。那是因为它们不是一样的吧。
现在删除发际线。 “发际线”是UIImageView，是导航栏的子视图。您可以找到它并将其设置为隐藏。这就是Apple在其原生日历应用程序中所做的事情，以及商店应用程序。记得在当前视图消失时显示它。如果您使用Apple应用程序玩一点，您会看到发际线设置为隐藏在viewWillAppear:上并设置为viewDidDisappear:中显示。
要实现搜索栏的样式，只需将栏searchBarStyle设为UISearchBarStyleMinimal。
答案 1 :(得分：14)
现在删除发际线。 “发际线”是UIImageView，它是导航栏的子视图。您可以找到它并将其设置为隐藏。这就是Apple在其原生日历应用程序中所做的事情，以及商店应用程序。记得在当前视图消失时显示它。如果您使用Apple应用程序玩一点，您会看到发线设置为隐藏在viewWillAppear上：并设置为viewDidDisappear中显示：。
另一种方法是寻找发际线并将其移动到添加的工具栏下方。这就是我想出来的。
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIToolbar *segmentbar;
@property (weak, nonatomic) UIImageView *navHairline;
@end
@implementation ViewController
#pragma mark - View Lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// find the hairline below the navigationBar
for (UIView *aView in self.navigationController.navigationBar.subviews) {
for (UIView *bView in aView.subviews) {
if ([bView isKindOfClass:[UIImageView class]] &&
bView.bounds.size.width == self.navigationController.navigationBar.frame.size.width &&
bView.bounds.size.height < 2) {
self.navHairline = (UIImageView *)bView;
}
}
}
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self _moveHairline:YES];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self _moveHairline:NO];
}
- (void)_moveHairline:(BOOL)appearing
{
// move the hairline below the segmentbar
CGRect hairlineFrame = self.navHairline.frame;
if (appearing) {
hairlineFrame.origin.y += self.segmentbar.bounds.size.height;
} else {
hairlineFrame.origin.y -= self.segmentbar.bounds.size.height;
}
self.navHairline.frame = hairlineFrame;
}
@end
我还发现Apple NavBar Code Sample (Customizing UINavigationBar)非常有助于解决此问题。
另外一定要handle the top border of the UIToolbar，它可能会出现，你可能会把它与NavBar的发际线混淆。我还希望UIToolbar看起来与NavBar完全一样，你可能想要adjust the Toolbars barTintColor。
答案 2 :(得分：12)
这是针对这个特定问题的一种面向协议的Swift方法，以接受的答案为基础：
<强> HideableHairlineViewController.swift
p2<强> SampleViewController.swift
p2答案 3 :(得分：8)
您可以在Apple示例代码中找到带有UISegmentedControl的导航栏：https://developer.apple.com/library/ios/samplecode/NavBar/Introduction/Intro.html
或者您可以通过编程方式创建它，这是我在另一个帖子中的答案中的代码 Add segmented control to navigation bar and keep title with buttons
答案 4 :(得分：7)
我想做同样的事情......并得到了这个：
1 - UINavigationBar子类
//-------------------------
// UINavigationBarCustom.h
//-------------------------
#import <UIKit/UIKit.h>
@interface UINavigationBarCustom : UINavigationBar
@end
//-------------------------
// UINavigationBarCustom.m
//-------------------------
#import "UINavigationBarCustom.h"
const CGFloat MyNavigationBarHeightIncrease = 38.f;
@implementation UINavigationBarCustom
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self) {
[self initialize];
}
return self;
}
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self initialize];
}
return self;
}
- (void)initialize {
// Set tittle position for top
[self setTitleVerticalPositionAdjustment:-(MyNavigationBarHeightIncrease) forBarMetrics:UIBarMetricsDefault];
}
- (CGSize)sizeThatFits:(CGSize)size {
// Increase NavBar size
CGSize amendedSize = [super sizeThatFits:size];
amendedSize.height += MyNavigationBarHeightIncrease;
return amendedSize;
}
- (void)layoutSubviews {
// Set buttons position for top
[super layoutSubviews];
NSArray *classNamesToReposition = @[@"UINavigationButton"];
for (UIView *view in [self subviews]) {
if ([classNamesToReposition containsObject:NSStringFromClass([view class])]) {
CGRect frame = [view frame];
frame.origin.y -= MyNavigationBarHeightIncrease;
[view setFrame:frame];
}
}
}
- (void)didAddSubview:(UIView *)subview
{
// Set segmented position
[super didAddSubview:subview];
if ([subview isKindOfClass:[UISegmentedControl class]])
{
CGRect frame = subview.frame;
frame.origin.y += MyNavigationBarHeightIncrease;
subview.frame = frame;
}
}
@end
2 - 使用子类
设置NavigationController 
3 - 在navigationBar中添加您的UISegmentedControl
4 - 运行和娱乐 - ＆gt;不要忘记在
上添加相同的颜色 
搜索来源：
答案 5 :(得分：2)
Apple专门为此提供了示例应用程序。它描述了为导航栏设置透明阴影图像和彩色背景图像以及如何在导航栏下方配置视图。它还有其他导航栏自定义的示例。
请参阅https://developer.apple.com/library/ios/samplecode/NavBar/Introduction/Intro.html
答案 6 :(得分：2)
我尝试使用@ Simon的方法删除细线，但它不起作用。我可能做错了，因为我是超级菜鸟。但是，您可以使用hidden属性隐藏它，而不是删除该行。这是代码：
var hairLine: UIView = UIView()
override func viewDidLoad() {
super.viewDidLoad()
doneButton.enabled = false
for parent in self.navigationController!.navigationBar.subviews {
for childView in parent.subviews {
if childView is UIImageView && childView.bounds.size.width == self.navigationController!.navigationBar.frame.size.width {
hairLine = childView
}
}
}
}
override func viewWillAppear(animated: Bool) {
hairLine.hidden = true
}
override func viewWillDisappear(animated: Bool) {
hairLine.hidden = false
}
希望这有助于某人！
答案 7 :(得分：2)
UISegmentedControl在UIFTavigationbar下面的swift 3/4
详细
Xcode 9.2，swift 4
完整样本
ViewController.swift
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var navigationBarWithSegmentedControl: UINavigationBar!
fileprivate let barBackgroundColor = UIColor(red: 248/255, green: 248/255, blue: 248/255, alpha: 1.0)
override func viewDidLoad() {
super.viewDidLoad()
navigationBarWithSegmentedControl.barTintColor = barBackgroundColor
tableView.dataSource = self
tableView.delegate = self
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.barTintColor = barBackgroundColor
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
navigationController?.navigationBar.shadowImage = nil
}
}
extension ViewController: UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 100
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "TableViewCell") as! TableViewCell
cell.label.text = "\(indexPath)"
return cell
}
}
extension ViewController: UITableViewDelegate {
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) {
cell.isSelected = false
}
}
}
TableViewCell.swift
import UIKit
class TableViewCell: UITableViewCell {
@IBOutlet weak var label: UILabel!
}
Main.storyboard
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="5TT-dT-dEr">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
<capability name="Constraints to layout margins" minToolsVersion="6.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Text-->
<scene sceneID="tne-QT-ifu">
<objects>
<viewController id="BYZ-38-t0r" customClass="ViewController" customModule="stackoverflow_21887252" customModuleProvider="target" sceneMemberID="viewController">
<layoutGuides>
<viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
<viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
</layoutGuides>
<view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
<rect key="frame" x="0.0" y="0.0" width="375" height="603"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="HLl-W2-Moq">
<rect key="frame" x="0.0" y="44" width="375" height="559"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
<prototypes>
<tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="TableViewCell" id="FKA-c2-G0Q" customClass="TableViewCell" customModule="stackoverflow_21887252" customModuleProvider="target">
<rect key="frame" x="0.0" y="28" width="375" height="44"/>
<autoresizingMask key="autoresizingMask"/>
<tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="FKA-c2-G0Q" id="Xga-fr-00H">
<rect key="frame" x="0.0" y="0.0" width="375" height="43.5"/>
<autoresizingMask key="autoresizingMask"/>
<subviews>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="QW3-Hg-hU9">
<rect key="frame" x="15" y="11" width="345" height="21"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<constraints>
<constraint firstAttribute="trailingMargin" secondItem="QW3-Hg-hU9" secondAttribute="trailing" id="Grx-nu-2Tu"/>
<constraint firstItem="QW3-Hg-hU9" firstAttribute="centerY" secondItem="Xga-fr-00H" secondAttribute="centerY" id="MIn-R2-wYE"/>
<constraint firstItem="QW3-Hg-hU9" firstAttribute="leading" secondItem="Xga-fr-00H" secondAttribute="leadingMargin" id="h6T-gt-4xk"/>
</constraints>
</tableViewCellContentView>
<color key="backgroundColor" red="0.0" green="0.0" blue="0.0" alpha="0.050000000000000003" colorSpace="custom" customColorSpace="sRGB"/>
<connections>
<outlet property="label" destination="QW3-Hg-hU9" id="QjK-i2-Ckd"/>
<segue destination="hcx-2g-4ts" kind="show" id="IGa-oI-gtf"/>
</connections>
</tableViewCell>
</prototypes>
</tableView>
<navigationBar contentMode="scaleToFill" translucent="NO" translatesAutoresizingMaskIntoConstraints="NO" id="8jj-w6-ZtU">
<rect key="frame" x="0.0" y="0.0" width="375" height="44"/>
<items>
<navigationItem id="q8e-Yy-ceD">
<nil key="title"/>
<segmentedControl key="titleView" opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="top" segmentControlStyle="bar" selectedSegmentIndex="0" id="cHD-bv-2w7">
<rect key="frame" x="96.5" y="7" width="182" height="30"/>
<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
<segments>
<segment title="First"/>
<segment title="Second"/>
<segment title="Third"/>
</segments>
</segmentedControl>
</navigationItem>
</items>
</navigationBar>
</subviews>
<color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="8jj-w6-ZtU" firstAttribute="trailing" secondItem="HLl-W2-Moq" secondAttribute="trailing" id="1vT-ta-AuP"/>
<constraint firstItem="8jj-w6-ZtU" firstAttribute="leading" secondItem="8bC-Xf-vdC" secondAttribute="leading" id="BJE-BC-XcB"/>
<constraint firstItem="8jj-w6-ZtU" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" id="Boi-dN-awt"/>
<constraint firstItem="HLl-W2-Moq" firstAttribute="bottom" secondItem="wfy-db-euE" secondAttribute="top" id="W1n-m1-EOH"/>
<constraint firstAttribute="trailing" secondItem="8jj-w6-ZtU" secondAttribute="trailing" id="ihc-9p-71l"/>
<constraint firstItem="HLl-W2-Moq" firstAttribute="top" secondItem="8jj-w6-ZtU" secondAttribute="bottom" id="pFk-pU-y7j"/>
<constraint firstItem="8jj-w6-ZtU" firstAttribute="leading" secondItem="HLl-W2-Moq" secondAttribute="leading" id="yjf-7o-t2m"/>
</constraints>
</view>
<navigationItem key="navigationItem" title="Text" id="yrt-M7-PAX">
<barButtonItem key="leftBarButtonItem" systemItem="search" id="wrz-DS-FdJ"/>
<barButtonItem key="rightBarButtonItem" systemItem="add" id="LnB-Ci-YnO"/>
</navigationItem>
<connections>
<outlet property="navigationBarWithSegmentedControl" destination="8jj-w6-ZtU" id="Ggl-xb-fmj"/>
<outlet property="tableView" destination="HLl-W2-Moq" id="hEO-2U-I9k"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="894" y="791"/>
</scene>
<!--View Controller-->
<scene sceneID="Bi7-4l-uRN">
<objects>
<viewController id="hcx-2g-4ts" sceneMemberID="viewController">
<layoutGuides>
<viewControllerLayoutGuide type="top" id="NSV-kw-fuz"/>
<viewControllerLayoutGuide type="bottom" id="aze-le-h11"/>
</layoutGuides>
<view key="view" contentMode="scaleToFill" id="1nd-qq-kDT">
<rect key="frame" x="0.0" y="0.0" width="375" height="603"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="k7W-CB-tpA">
<rect key="frame" x="0.0" y="0.0" width="375" height="603"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
</view>
</subviews>
<color key="backgroundColor" white="0.66666666666666663" alpha="0.5" colorSpace="calibratedWhite"/>
<constraints>
<constraint firstAttribute="trailing" secondItem="k7W-CB-tpA" secondAttribute="trailing" id="1t2-Bi-dR7"/>
<constraint firstItem="k7W-CB-tpA" firstAttribute="bottom" secondItem="aze-le-h11" secondAttribute="top" id="Fnm-UL-geX"/>
<constraint firstItem="k7W-CB-tpA" firstAttribute="leading" secondItem="1nd-qq-kDT" secondAttribute="leading" id="bKV-7A-hz0"/>
<constraint firstItem="k7W-CB-tpA" firstAttribute="top" secondItem="NSV-kw-fuz" secondAttribute="bottom" id="cFH-7i-vAm"/>
</constraints>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="jPK-Z9-yvJ" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="1566" y="791"/>
</scene>
<!--Navigation Controller-->
<scene sceneID="1Pc-qt-rnW">
<objects>
<navigationController automaticallyAdjustsScrollViewInsets="NO" id="5TT-dT-dEr" sceneMemberID="viewController">
<toolbarItems/>
<navigationBar key="navigationBar" contentMode="scaleToFill" translucent="NO" id="lPt-hx-iar">
<rect key="frame" x="0.0" y="20" width="375" height="44"/>
<autoresizingMask key="autoresizingMask"/>
</navigationBar>
<nil name="viewControllers"/>
<connections>
<segue destination="BYZ-38-t0r" kind="relationship" relationship="rootViewController" id="6b8-br-zSy"/>
</connections>
</navigationController>
<placeholder placeholderIdentifier="IBFirstResponder" id="u7U-GH-NHe" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="140" y="791.15442278860576"/>
</scene>
</scenes>
</document>
结果
答案 8 :(得分：0)
有很多方法可以做你所要求的。最简单的当然是在界面构建器中创建它，但我认为这不是你想到的。我创建了一个上面发布的图像示例。它并不完全相同，但您可以使用众多属性来获得您正在寻找的外观和感觉。
在ViewController.h中
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate>
@end
在ViewController.m
中#import "ViewController.h"
@interface ViewController ()
@property (strong, nonatomic) UISegmentedControl *mySegmentControl;
@property (strong, nonatomic) UISearchBar *mySearchBar;
@property (strong, nonatomic) UITableView *myTableView;
@property (strong, nonatomic) NSMutableArray *tableDataArray;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// create a custom UIView
UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(0, 64, 320, 84)];
myView.tintColor = [UIColor lightGrayColor]; // change tiny color or delete this line to default
// create a UISegmentControl
self.mySegmentControl = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"All", @"Not on this iPhone", nil]];
self.mySegmentControl.selectedSegmentIndex = 0;
[self.mySegmentControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
self.mySegmentControl.frame = CGRectMake(20, 10, 280, 30);
[myView addSubview:self.mySegmentControl]; // add segment control to custom view
// create UISearchBar
self.mySearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 40, 320, 44)];
[self.mySearchBar setDelegate:self];
self.mySearchBar.searchBarStyle = UISearchBarStyleMinimal;
[myView addSubview:self.mySearchBar]; // add search bar to custom view
[self.view addSubview:myView]; // add custom view to main view
// create table data array
self.tableDataArray = [[NSMutableArray alloc] initWithObjects:
@"Line 1",
@"Line 2",
@"Line 3",
@"Line 4",
@"Line 5",
@"Line 6",
@"Line 7",
@"Line 8",
@"Line 9",
@"Line 10",
@"Line 11",
@"Line 12", nil];
self.myTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 160, 320, 320)];
[self.myTableView setDataSource:self];
[self.myTableView setDelegate:self];
[self.view addSubview:self.myTableView]; // add table to main view
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[searchBar resignFirstResponder];
NSLog(@"search text = %@",searchBar.text);
// code for searching...
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.tableDataArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [self.tableDataArray objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(@"Selected table item: %@",[self.tableDataArray objectAtIndex:indexPath.row]);
// do something once user has selected a table cell...
}
-(void)segmentAction:(id)sender {
NSLog(@"Segment control changed to: %@",[self.mySegmentControl titleForSegmentAtIndex:[self.mySegmentControl selectedSegmentIndex]]);
// do something based on segment control selection...
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
答案 9 :(得分：-2)
displaysSearchBarInNavigationBar是在导航栏中显示搜索栏及其范围栏的方法。
每当您显示自定义标题时，您只需隐藏搜索栏
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