修改UISearchBar取消按钮字体文本颜色和样式

Question

有没有办法更改UISearchBar取消按钮的文本字体和颜色而无需继承搜索栏？

Answer 1

您可以通过更改UIBarButtonItem包含时的外观来更改"取消"按钮样式UISearchBar.

例如,

[[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                      [UIColor blueColor], 
                                                      UITextAttributeTextColor, 
                                                      [UIColor darkGrayColor], 
                                                      UITextAttributeTextShadowColor, 
                                                      [NSValue valueWithUIOffset:UIOffsetMake(0, -1)], 
                                                      UITextAttributeTextShadowOffset,
                                                      nil] 
                                            forState:UIControlStateNormal];

Answer 2

斯威夫特3

let attributes = [
    NSForegroundColorAttributeName : UIColor.white,
    NSFontAttributeName : UIFont.systemFont(ofSize: 17)
]
UIBarButtonItem.appearance(whenContainedInInstancesOf: [UISearchBar.self]).setTitleTextAttributes(attributes, for: .normal)

Answer 3

斯威夫特 5

let attributes:[NSAttributedString.Key: Any] = [
    .foregroundColor: UIColor.black,
    .font: UIFont.systemFont(ofSize: 17)
]
UIBarButtonItem.appearance(whenContainedInInstancesOf: [UISearchBar.self]).setTitleTextAttributes(attributes, for: .normal)

Answer 4

如果您只想修改取消按钮，可以通过以下方式进行：

if let cancelButton = searchBar.valueForKey("cancelButton") as? UIButton {
    cancelButton.setTitle(<your_string>, forState: <UIControlState>)
    cancelButton.setTitleColor(<your_uicolor>, forState: <UIControlState>)
    cancelButton.setAttributedTitle(<your_nsattributedstring>, forState: <UIControlState>)
}

searchBar你的UISearchBar对象在哪里。

Answer 5

基于 htinlinn 的回答，这是我在viewDidLoad使用 iOS 7 中的搜索栏的视图控制器方法中使用的：

[[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil]
                     setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], NSForegroundColorAttributeName, nil] 
                                   forState:UIControlStateNormal];