关于UISearchBar更改占位符颜色,可以通过以下方法实现:
在iOS中,可以使用以下代码来更改UISearchBar的占位符颜色:
let searchBar = UISearchBar()
let searchBarTextField = searchBar.value(forKey: "searchField") as? UITextField
searchBarTextField?.textColor = UIColor.red
searchBarTextField?.attributedPlaceholder = NSAttributedString(string: "搜索", attributes: [NSAttributedString.Key.foregroundColor: UIColor.red])
可以使用以下代码来更改UISearchBar的占位符字体:
let searchBar = UISearchBar()
let searchBarTextField = searchBar.value(forKey: "searchField") as? UITextField
searchBarTextField?.font = UIFont.systemFont(ofSize: 15)
searchBarTextField?.attributedPlaceholder = NSAttributedString(string: "搜索", attributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 15)])
可以使用以下代码来更改UISearchBar的占位符文本对齐方式:
let searchBar = UISearchBar()
let searchBarTextField = searchBar.value(forKey: "searchField") as? UITextField
searchBarTextField?.textAlignment = .center
searchBarTextField?.attributedPlaceholder = NSAttributedString(string: "搜索", attributes: [NSAttributedString.Key.paragraphStyle: NSMutableParagraphStyle(alignment: .center)])
以上是关于UISearchBar更改占位符颜色、字体和对齐方式的方法。
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