UISearchBar change placeholder color
for iOS5+
use the appearance proxy
[[UILabel appearanceWhenContainedIn:[UISearchBar class], nil] setTextColor:[UIColor redColor]];
How to change text color of PlaceHolder in UISearchBar? (iOS 13)
As you already mentioned, your code works only in viewDidAppear
, which makes the placeholder to flicker from the default gray color to the preferred color.
However, there seem to be a time before viewDidAppear
(I couldn't figure it out when exactly), to change the placeholder before the view actually appears.
I suppose, this may be connected to how iOS handles light/dark mode and/or an iOS bug.
The solution I came out with that works around the issue:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if #available(iOS 13.0, *) {
let placeholder = NSAttributedString(string: "Search",
attributes: [
.foregroundColor: UIColor.white
])
let searchTextField = searchBar.searchTextField
// Key workaround to be able to set attributedPlaceholder
DispatchQueue.global().async {
DispatchQueue.main.async {
searchTextField.attributedPlaceholder = placeholder
}
}
}
}
There seem to be no performance and/or other downside to this method.
If anybody else comes with a better approach, feel free to collaborate.
How to change UISearchBar Placeholder and image tint color?
If you have a custom image you could use, you can set the image and change the placeholder text color using something similar to the following:
[searchBar setImage:[UIImage imageNamed:@"SearchWhite"] forSearchBarIcon:UISearchBarIconSearch state:UIControlStateNormal];
UITextField *searchTextField = [searchBar valueForKey:@"_searchField"];
if ([searchTextField respondsToSelector:@selector(setAttributedPlaceholder:)]) {
UIColor *color = [UIColor purpleColor];
[searchTextField setAttributedPlaceholder:[[NSAttributedString alloc] initWithString:@"Search" attributes:@{NSForegroundColorAttributeName: color}]];
}
In that example I used purpleColor, instead you can use the + (UIColor *)colorWithRed:(CGFloat)red green:(CGFloat)green blue:(CGFloat)blue alpha:(CGFloat)alpha
method to create your custom dark green color.
EDIT: I just realized you were writing it in swift... duh. Quickly typed this out so I didn't leave the answer in just Obj-C.
searchBar.setImage(UIImage(named: "SearchWhite"), forSearchBarIcon: UISearchBarIcon.Search, state: UIControlState.Normal);
var searchTextField: UITextField? = searchBar.valueForKey("searchField") as? UITextField
if searchTextField!.respondsToSelector(Selector("attributedPlaceholder")) {
var color = UIColor.purpleColor()
let attributeDict = [NSForegroundColorAttributeName: UIColor.purpleColor()]
searchTextField!.attributedPlaceholder = NSAttributedString(string: "search", attributes: attributeDict)
}
Swift 3.0
var searchTextField: UITextField? = searchBar.value(forKey: "searchField") as? UITextField
if searchTextField!.responds(to: #selector(getter: UITextField.attributedPlaceholder)) {
let attributeDict = [NSForegroundColorAttributeName: UIColor.white]
searchTextField!.attributedPlaceholder = NSAttributedString(string: "Search", attributes: attributeDict)
}
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