如何在iOS 11中更改UISearchController搜索栏颜色
我想自定义搜索栏的背景颜色和文本颜色,我已经尝试了以下代码来进行自定义,但没有成功如何在iOS 11中更改UISearchController搜索栏颜色,ios,swift3,uinavigationcontroller,uisearchbar,uisearchcontroller,Ios,Swift3,Uinavigationcontroller,Uisearchbar,Uisearchcontroller,我想自定义搜索栏的背景颜色和文本颜色,我已经尝试了以下代码来进行自定义,但没有成功 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 e
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 getSearchBarTextField() -> UITextField? {
return getViewElement(type: UITextField.self)
}
func getSearchBarButton() -> UIButton? {
return getViewElement(type: UIButton.self)
}
func setTextColor(color: UIColor) {
if let textField = getSearchBarTextField() {
textField.textColor = color
}
}
func setTextFieldColor(color: UIColor) {
if let textField = getViewElement(type: UITextField.self) {
switch searchBarStyle {
case .minimal:
textField.layer.backgroundColor = color.cgColor
textField.layer.cornerRadius = 18.0
if let backgroundview = textField.subviews.first {
backgroundview.layer.cornerRadius = 18.0;
backgroundview.clipsToBounds = true;
}
case .prominent, .default:
textField.backgroundColor = color
}
}
}
func setPlaceholderTextColor(color: UIColor) {
if let textField = getSearchBarTextField() {
textField.attributedPlaceholder = NSAttributedString(string: self.placeholder != nil ? self.placeholder! : "", attributes: [NSAttributedStringKey.foregroundColor: color])
}
}
func setTextFieldClearButtonColor(color: UIColor) {
if let textField = getSearchBarTextField() {
let button = textField.value(forKey: "_clearButton") as! UIButton
if let image = button.imageView?.image {
button.setImage(image.transform(withNewColor: color), for: .normal)
}else{
//button.setImage(#imageLiteral(resourceName: "icon-hotel"), for: .normal)
}
}
if let btn = getSearchBarButton() {
let button = btn.value(forKey: "_clearButton") as! UIButton
if let image = button.imageView?.image {
button.setImage(image.transform(withNewColor: color), for: .normal)
}else{
//button.setImage(#imageLiteral(resourceName: "icon-hotel"), for: .normal)
}
}
}
func setSearchImageColor(color: UIColor) {
if let imageView = getSearchBarTextField()?.leftView as? UIImageView {
imageView.image = imageView.image?.transform(withNewColor: color)
}
}
}
extension UIImage {
func transform(withNewColor color: UIColor) -> UIImage {
UIGraphicsBeginImageContextWithOptions(size, false, scale)
let context = UIGraphicsGetCurrentContext()!
context.translateBy(x: 0, y: size.height)
context.scaleBy(x: 1.0, y: -1.0)
context.setBlendMode(.normal)
let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
context.clip(to: rect, mask: cgImage!)
color.setFill()
context.fill(rect)
let newImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return newImage
}
}
我已将代码放入主队列及其工作
DispatchQueue.main.async {
self.searchBarController.searchBar.placeholder = "Search"
self.searchBarController.searchBar.setTextColor(color: .white)
self.searchBarController.searchBar.setPlaceholderTextColor(color: .white)
self.searchBarController.searchBar.setSearchImageColor(color: .white)
self.searchBarController.searchBar.setTextFieldColor(color: UIColor.clear) //light green
self.searchBarController.searchBar.delegate = self
}
奇怪:)在AppDelegate中,在didFinishLaunchingWithOptions函数中添加以下代码行:
UISearchBar.appearance().tintColor = .green // Add your color
UISearchBar.appearance().backgroundColor = .white // Add your color
你试过设置searchBarController.searchBar.barTintColor吗?是的,我试过了。
UISearchBar.appearance().tintColor = .green // Add your color
UISearchBar.appearance().backgroundColor = .white // Add your color