我正在尝试更改搜索显示控制器中搜索栏中占位符文本的字体。我正在看一些例子,我试图实现它们,但是因为它们在Objective-C中,我无法找到任何可以开始工作的例子。
例如,我试过这个:
UITextField *textField = [[searchBar subviews] objectAtIndex:1];
[textField setFont:[UIFont fontWithName:@"Helvetica" size:40]];
但我无法超越var textField: UITextField = UISearchBar
有什么想法吗?
答案 0 :(得分:32)
//SearchBar Text
let textFieldInsideUISearchBar = dashBoardSearchBar.valueForKey("searchField") as? UITextField
textFieldInsideUISearchBar?.textColor = UIColor.whiteColor()
//SearchBar Placeholder
let textFieldInsideUISearchBarLabel = textFieldInsideUISearchBar!.valueForKey("placeholderLabel") as? UILabel
textFieldInsideUISearchBarLabel?.textColor = UIColor.whiteColor()
答案 1 :(得分:14)
这是更改字体或searchBar文本字段中任何其他类似更改的最简单方法。 我一直在使用XCode 8.4,Swift 3.x,iOS 10.x。
extension UISearchBar {
func change(textFont : UIFont?) {
for view : UIView in (self.subviews[0]).subviews {
if let textField = view as? UITextField {
textField.font = textFont
}
}
} }
您可以直接调用上面的代码,您可以在其中创建searchBar的IBOutlet ...
@IBOutlet weak var searchBar: UISearchBar! {
didSet {
searchBar.change(textFont: GlobalConstants.Font.avenirBook14)
}
}
答案 2 :(得分:9)
设置占位符文本字体大小:
UILabel.appearance(whenContainedInInstancesOf: [UISearchBar.self]).font = UIFont.systemFont(ofSize: 12)
设置搜索文本字体大小:
UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).font = UIFont.systemFont(ofSize: 12)
答案 3 :(得分:8)
在iOS 8中,试试这个
for subView in searchBar.subviews {
for subsubView in subView.subviews {
if let textField = subsubView as? UITextField {
textField.attributedPlaceholder = NSAttributedString(string:NSLocalizedString("Search", comment:""),
attributes:[NSForegroundColorAttributeName: UIColor.orangeColor()])
}
}
}
答案 4 :(得分:6)
@ Alvin的答案的Swift 3版本
let textFieldInsideUISearchBar = searchBar.value(forKey: "searchField") as? UITextField
let placeholderLabel = textFieldInsideUISearchBar?.value(forKey: "placeholderLabel") as? UILabel
placeholderLabel?.font = UIFont.systemFont(ofSize: 12.0)
答案 5 :(得分:5)
searchBar.searchTextField.font = UIFont(name: "Helvetica", size: 40)
答案 6 :(得分:3)
这适用于ios7 - > ios9使用swift 2:
if #available(iOS 9.0, *) {
UITextField.appearanceWhenContainedInInstancesOfClasses([UISearchBar.self]).font = UI.getInstance.tinyFont
} else {
func checkSubview(view:UIView)
for subView in view.subviews {
if subView is UITextField {
let textField = subView as! UITextField
textField.font = UI.getInstance.tinyFont
} else {
checkSubview(subView)
}
}
checkSubview(view)
}
只需用您想要的任何字体替换UI.getInstance.tinyFont。
答案 7 :(得分:2)
Swift 5 中甚至有一种更简单的方法:
searchBar[keyPath: \.searchTextField].font = UIFont(...)