如何在iOS上更改UISearchBar组件的内部背景颜色
问题描述 投票：56回答：21
我知道如何删除/更改搜索字段周围的UISearchBar背景颜色：
[[self.searchBar.subviews objectAtIndex:0] removeFromSuperview];
self.searchBar.backgroundColor = [UIColor grayColor];
但是不知道如何在里面这样做：
这需要与iOS 4.3+兼容。
21个回答
投票
使用此代码更改搜索栏qazxsw poi background图片：
UITextField使用以下代码更改UITextField *searchField;
NSUInteger numViews = [searchBar.subviews count];
for (int i = 0; i < numViews; i++) {
if ([[searchBar.subviews objectAtIndex:i] isKindOfClass:[UITextField class]]) { //conform?
searchField = [searchBar.subviews objectAtIndex:i];
}
}
if (searchField) {
searchField.textColor = [UIColor whiteColor];
[searchField setBackground: [UIImage imageNamed:@"yourImage"]]; //set your gray background image here
[searchField setBorderStyle:UITextBorderStyleNone];
}
：
UISearchBarIcon此外，要更改搜索栏图标，您可以在qazxsw poi上使用以下内置方法（可从iOS 5+获得）：
UIImageView *searchIcon = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"yourSearchBarIconImage"]];
searchIcon.frame = CGRectMake(10, 10, 24, 24);
[searchBar addSubview:searchIcon];
[searchIcon release];
在这里你可以设置4种类型的UISearchBar，即：
- (void)setImage:(UIImage *)iconImage forSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)stateUISearchBarIconUISearchBarIconBookmarkUISearchBarIconClear
我希望这有助于你......
投票
更好的解决方案是在
for (UIView* subview in [[self.searchBar.subviews lastObject] subviews]) {
if ([subview isKindOfClass:[UITextField class]]) {
UITextField *textField = (UITextField*)subview;
[textField setBackgroundColor:[UIColor redColor]];
}
}
的外观
UITextField投票
只需使用类别方法遍历所有视图（在iOS 7中验证并且不使用私有API）：
UISearchBar因此，在将类别导入您的类后，只需使用它：
[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setBackgroundColor:[UIColor grayColor]];
请记住，如果您在@implementation UISearchBar (MyAdditions)
- (void)changeDefaultBackgroundColor:(UIColor *)color {
for (UIView *subview in self.subviews) {
for (UIView *subSubview in subview.subviews) {
if ([subSubview isKindOfClass:[UITextField class]]) {
UITextField *searchField = (UITextField *)subSubview;
searchField.backgroundColor = color;
break;
}
}
}
}
@end
行之后立即放置它，它将无法工作，因为搜索栏的子视图仍在创建中。设置搜索栏的其余部分后，将其放下几行。
投票
仅更改颜色：
[self.searchBar changeDefaultBackgroundColor:[UIColor grayColor]];
用于应用背景图像：
[[UISearchBar alloc] init]投票
searchBar.tintColor = [UIColor redColor];
投票
这是Swift版本（swift 2.1 / IOS 9）
[self.searchBar setSearchFieldBackgroundImage:
[UIImage imageNamed:@"Searchbox.png"]
forState:UIControlStateNormal];
投票
对于iOS 9使用此：
- (void)viewDidLoad
{
[super viewDidLoad];
[[self searchSubviewsForTextFieldIn:self.searchBar] setBackgroundColor:[UIColor redColor]];
}
- (UITextField*)searchSubviewsForTextFieldIn:(UIView*)view
{
if ([view isKindOfClass:[UITextField class]]) {
return (UITextField*)view;
}
UITextField *searchedTextField;
for (UIView *subview in view.subviews) {
searchedTextField = [self searchSubviewsForTextFieldIn:subview];
if (searchedTextField) {
break;
}
}
return searchedTextField;
}
投票
斯威夫特3
for view in searchBar.subviews {
for subview in view.subviews {
if subview .isKindOfClass(UITextField) {
let textField: UITextField = subview as! UITextField
textField.backgroundColor = UIColor.lightGrayColor()
}
}
}
投票
对于Swift 3+，请使用：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Remove lag on oppening the keyboard for the first time
UITextField *lagFreeField = [[UITextField alloc] init];
[self.window addSubview:lagFreeField];
[lagFreeField becomeFirstResponder];
[lagFreeField resignFirstResponder];
[lagFreeField removeFromSuperview];
//searchBar background color change
[[UITextField appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]] setBackgroundColor:[UIColor greenColor]];
[[UITextField appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]] setTextColor:[UIColor blackColor];
return YES;
}
投票
使用Swift 4，我建议您只执行此操作，无需其他代码：
for subview in searchBar.subviews {
for innerSubview in subview.subviews {
if innerSubview is UITextField {
innerSubview.backgroundColor = UIColor.YOUR_COLOR_HERE
}
}
}
如果您不希望外部背景为灰色，也可以将.prominent更改为.minimal。
投票
@EvGeniy Ilyin EvGeniy Ilyin的解决方案是最好的。我根据这个解决方案编写了一个Objective-C版本。
创建一个for subView in searchController.searchBar.subviews {
for subViewOne in subView.subviews {
if let textField = subViewOne as? UITextField {
subViewOne.backgroundColor = UIColor.red
//use the code below if you want to change the color of placeholder
let textFieldInsideUISearchBarLabel = textField.value(forKey: "placeholderLabel") as? UILabel
textFieldInsideUISearchBarLabel?.textColor = UIColor.blue
}
}
}
类，并在UIImage + YourCategory.h中公布两个类方法
self.searchBar.searchBarStyle = .prominent
self.searchBar.barStyle = .black
在UIImage + YourCategory.m中实现方法
UIImage在你的+ (UIImage *)imageWithColor:(UIColor *)color withSize:(CGRect)imageRect;
+ (UIImage *)roundImage:(UIImage *)image withRadius:(CGFloat)radius;
制作自己的// create image with your color
+ (UIImage *)imageWithColor:(UIColor *)color withSize:(CGRect)imageRect
{
UIGraphicsBeginImageContext(imageRect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, imageRect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
// get a rounded-corner image from UIImage instance with your radius
+ (UIImage *)roundImage:(UIImage *)image withRadius:(CGFloat)radius
{
CGRect rect = CGRectMake(0.0, 0.0, 0.0, 0.0);
rect.size = image.size;
UIGraphicsBeginImageContextWithOptions(image.size, NO, [UIScreen mainScreen].scale);
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:rect
cornerRadius:radius];
[path addClip];
[image drawInRect:rect];
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
UISearchBar投票
只需自定义文本字段。
我只是这样做，它适用于我（iOS 7）。
UISearchBarIconResultsList这样您就不需要创建图像，调整大小等等......
投票
这对我有用。
ViewController投票
这有助于我在搜索栏中更改textField的背景颜色。
CGRect rect = CGRectMake(0.0, 0.0, 44.0, 30.0);
UIImage *colorImage = [UIImage imageWithColor:[UIColor yourColor] withSize:rect];
UIImage *finalImage = [UIImage roundImage:colorImage withRadius:4.0];
[yourSearchBar setSearchFieldBackgroundImage:finalImage forState:UIControlStateNormal];
投票
解决方案不涉及任何私有API！ :)
目前（UISearchBarIconSearch）你可以这样做，只需一种颜色的情况，这样：
UITextField *txfSearchField = [_searchBar valueForKey:@"_searchField"];
txfSearchField.backgroundColor = [UIColor redColor];
但请记住，因为它的外观基础是应用程序的全局变化（它可能是解决方案的优点或缺点）。
对于Swift，您可以使用（它适用于iOS 9及更高版本）：
probably since iOS 5
如果您的项目支持iOS 9及更高版本，则不需要[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setBackgroundColor:[UIColor redColor]];
。
如果您需要支持早期版本的iOS并想使用Swift，请查看if #available(iOS 9.0, *) {
UITextField.appearanceWhenContainedInInstancesOfClasses([UISearchBar.self]).backgroundColor = UIColor.darkGrayColor()
}
问题。
投票
细节
- Xcode 10.2（10E125）
- 斯威夫特5
#available
解
this
用法
UISearchBar customising sample
结果1
extension UISearchBar {
private func getViewElement<T>(type: T.Type) -> T? {
let svs = subviews.flatMap { $0.subviews }
guard let element = (svs.filter { $0 is T }).first as? T else { return nil }
return element
}
func setTextFieldColor(color: UIColor) {
if let textField = getViewElement(type: UITextField.self) {
switch searchBarStyle {
case .minimal:
textField.layer.backgroundColor = color.cgColor
textField.layer.cornerRadius = 6
case .prominent, .default:
textField.backgroundColor = color
}
}
}
}
let searchBar = UISearchBar(frame: CGRect(x: 0, y: 20, width: UIScreen.main.bounds.width, height: 44))
//searchBar.searchBarStyle = .prominent
view.addSubview(searchBar)
searchBar.placeholder = "placeholder"
searchBar.setTextFieldColor(color: UIColor.green.withAlphaComponent(0.3))
结果2
searchBar.searchBarStyle = .prominent // or default
完整样本
searchBar.searchBarStyle = .minimal
投票
根据
您应该将此功能用于iOS 5.0+。
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let searchBar = UISearchBar(frame: CGRect(x: 0, y: 20, width: UIScreen.main.bounds.width, height: 44))
//searchBar.searchBarStyle = .minimal
//searchBar.searchBarStyle = .prominent
view.addSubview(searchBar)
searchBar.placeholder = "placeholder"
searchBar.setTextFieldColor(color: UIColor.green.withAlphaComponent(0.3))
}
}
用法示例：
UISearchBar documentation
遗憾的是，在iOS 4中，您需要恢复不太复杂的方法。看到其他答案。
投票
正如Accatyyc所说的iOS5 +使用setSearchFieldBackgroundImage，但你需要创建一个图形，或者执行以下操作：
- (void)setSearchFieldBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state
投票
苹果方式怎么样？
[mySearchBar setSearchFieldBackgroundImage:myImage forState:UIControlStateNormal];
你可以在你的设计上设置任何图像！
但是，如果您想以编程方式创建所有内容，则可以执行此操作
我在Swift 3上的解决方案
CGSize size = CGSizeMake(30, 30);
// create context with transparent background
UIGraphicsBeginImageContextWithOptions(size, NO, [UIScreen mainScreen].scale);
// Add a clip before drawing anything, in the shape of an rounded rect
[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(0,0,30,30)
cornerRadius:5.0] addClip];
[[UIColor grayColor] setFill];
UIRectFill(CGRectMake(0, 0, size.width, size.height));
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[self.searchBar setSearchFieldBackgroundImage:image forState:UIControlStateNormal];
我在哪里使用助手扩展
UISearchBar.appearance().setSearchFieldBackgroundImage(myImage, for: .normal)
投票
我发现这是使用let searchFieldBackgroundImage = UIImage(color: .searchBarBackground, size: CGSize(width: 44, height: 30))?.withRoundCorners(4)
UISearchBar.appearance().setSearchFieldBackgroundImage(searchFieldBackgroundImage, for: .normal)
自定义Swift 2.2和iOS 8+中各种搜索栏属性外观的最佳方式
public extension UIImage {
public convenience init?(color: UIColor, size: CGSize = CGSize(width: 1, height: 1)) {
let rect = CGRect(origin: .zero, size: size)
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
color.setFill()
UIRectFill(rect)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
guard let cgImage = image?.cgImage else { return nil }
self.init(cgImage: cgImage)
}
public func withRoundCorners(_ cornerRadius: CGFloat) -> UIImage? {
UIGraphicsBeginImageContextWithOptions(size, false, scale)
let rect = CGRect(origin: CGPoint.zero, size: size)
let context = UIGraphicsGetCurrentContext()
let path = UIBezierPath(roundedRect: rect, cornerRadius: cornerRadius)
context?.beginPath()
context?.addPath(path.cgPath)
context?.closePath()
context?.clip()
draw(at: CGPoint.zero)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext();
return image;
}
}
UISearchBarStyle.Minimal
投票
不使用私有API：
searchBar = UISearchBar(frame: CGRectZero)
searchBar.tintColor = UIColor.whiteColor() // color of bar button items
searchBar.barTintColor = UIColor.fadedBlueColor() // color of text field background
searchBar.backgroundColor = UIColor.clearColor() // color of box surrounding text field
searchBar.searchBarStyle = UISearchBarStyle.Minimal
// Edit search field properties
if let searchField = searchBar.valueForKey("_searchField") as? UITextField {
if searchField.respondsToSelector(Selector("setAttributedPlaceholder:")) {
let placeholder = "Search"
let attributedString = NSMutableAttributedString(string: placeholder)
let range = NSRange(location: 0, length: placeholder.characters.count)
let color = UIColor(white: 1.0, alpha: 0.7)
attributedString.addAttribute(NSForegroundColorAttributeName, value: color, range: range)
attributedString.addAttribute(NSFontAttributeName, value: UIFont(name: "AvenirNext-Medium", size: 15)!, range: range)
searchField.attributedPlaceholder = attributedString
searchField.clearButtonMode = UITextFieldViewMode.WhileEditing
searchField.textColor = .whiteColor()
}
}
// Set Search Icon
let searchIcon = UIImage(named: "search-bar-icon")
searchBar.setImage(searchIcon, forSearchBarIcon: .Search, state: .Normal)
// Set Clear Icon
let clearIcon = UIImage(named: "clear-icon")
searchBar.setImage(clearIcon, forSearchBarIcon: .Clear, state: .Normal)
// Add to nav bar
searchBar.sizeToFit()
navigationItem.titleView = searchBar
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