I am trying to change the font of the placeholder text in the search bar within my Search Display Controller. I was looking at some examples and I tried to implement them but as they are in Objective-C, I wasn't able to find any that I could get to work.
For example, I tried this one:
UITextField *textField = [[searchBar subviews] objectAtIndex:1];
[textField setFont:[UIFont fontWithName:@"Helvetica" size:40]];
But I was unable to get past var textField: UITextField = UISearchBar
Any ideas?
//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()
Set placeholder text font size:
UILabel.appearance(whenContainedInInstancesOf: [UISearchBar.self]).font = UIFont.systemFont(ofSize: 12)
set search text font size:
UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).font = UIFont.systemFont(ofSize: 12)
This is the easiest practise for changing the Font or any other similar changes in the textfield of searchBar. I have been using 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
}
}
} }
The above code can be called directly where you make an IBOutlet of the searchBar...
@IBOutlet weak var searchBar: UISearchBar! {
didSet {
searchBar.change(textFont: GlobalConstants.Font.avenirBook14)
}
}
searchBar.searchTextField.font = UIFont(name: "Helvetica", size: 40)
In iOS 8 ,try this
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()])
}
}
}
在Swift 5 中还有一种更简单的方法:
searchBar[keyPath: \.searchTextField].font = UIFont(...)
Swift 3 version of @Alvin's answer
let textFieldInsideUISearchBar = searchBar.value(forKey: "searchField") as? UITextField
let placeholderLabel = textFieldInsideUISearchBar?.value(forKey: "placeholderLabel") as? UILabel
placeholderLabel?.font = UIFont.systemFont(ofSize: 12.0)
This works perfectly for ios7 -> ios9 using 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)
}
Just replace UI.getInstance.tinyFont by whichever font you want.
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