改变的UISearchBar占位符颜色(UISearchBar change placeholder

有没有人对我怎样才能改变一个UISearchBar的占位符文本的文本颜色的任何想法或示例代码？

Answer 1:

对于iOS5+使用外观代理

[[UILabel appearanceWhenContainedIn:[UISearchBar class], nil] setTextColor:[UIColor redColor]];

Answer 2:

发现从应答变化的UITextField的占位符文本颜色编程

// Get the instance of the UITextField of the search bar
UITextField *searchField = [searchBar valueForKey:@"_searchField"];

// Change search bar text color
searchField.textColor = [UIColor redColor];

// Change the search bar placeholder text color
[searchField setValue:[UIColor blueColor] forKeyPath:@"_placeholderLabel.textColor"];

Answer 3:

下面是斯威夫特的解决方案：

斯威夫特2

var textFieldInsideSearchBar = searchBar.valueForKey("searchField") as? UITextField
textFieldInsideSearchBar?.textColor = UIColor.whiteColor()

var textFieldInsideSearchBarLabel = textFieldInsideSearchBar!.valueForKey("placeholderLabel") as? UILabel
textFieldInsideSearchBarLabel?.textColor = UIColor.whiteColor()

斯威夫特3

let textFieldInsideSearchBar = searchBar.value(forKey: "searchField") as? UITextField
textFieldInsideSearchBar?.textColor = UIColor.white

let textFieldInsideSearchBarLabel = textFieldInsideSearchBar!.value(forKey: "placeholderLabel") as? UILabel
textFieldInsideSearchBarLabel?.textColor = UIColor.white

Answer 4:

第一个解决方案是好的，但如果你使用多个的UISearchBar，或创造了很多的实例也可能会失败。 在一个解决方案总是对我的工作是对的UITextField也使用外观代理，而是直接

   NSDictionary *placeholderAttributes = @{
                                            NSForegroundColorAttributeName: [UIColor darkButtonColor],
                                            NSFontAttributeName: [UIFont fontWithName:@"HelveticaNeue" size:15],
                                            };

    NSAttributedString *attributedPlaceholder = [[NSAttributedString alloc] initWithString:self.searchBar.placeholder
                                                                                attributes:placeholderAttributes];

    [[UITextField appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]] setAttributedPlaceholder:attributedPlaceholder];

Answer 5:

if let textFieldInsideSearchBar = searchBar.value(forKey: "searchField") as ? UITextField {
    textFieldInsideSearchBar ? .textColor = UIColor.white

    if let textFieldInsideSearchBarLabel = textFieldInsideSearchBar!.value(forKey: "placeholderLabel") as ? UILabel {
        textFieldInsideSearchBarLabel ? .textColor = UIColor.white

        if let clearButton = textFieldInsideSearchBar ? .value(forKey: "clearButton") as!UIButton {

            clearButton.setImage(clearButton.imageView ? .image ? .withRenderingMode(.alwaysTemplate),
                for : .normal)
            clearButton.tintColor = UIColor.white
        }
    }

    let glassIconView = textFieldInsideSearchBar ? .leftView as ? UIImageView

    glassIconView ? .image = glassIconView ? .image ? .withRenderingMode(.alwaysTemplate)
    glassIconView ? .tintColor = UIColor.white
}

Answer 6:

斯威夫特3

UILabel.appearance(whenContainedInInstancesOf: [UISearchBar.self]).textColor = UIColor.white

Answer 7:

试试这个，看看（我测试下面的代码与雨燕4.1 - Xcode的9.3 BETA4 ）

@IBOutlet weak var sbSearchBar: UISearchBar!

if let textfield = sbSearchBar.value(forKey: "searchField") as? UITextField {

    textfield.backgroundColor = UIColor.yellow
    textfield.attributedPlaceholder = NSAttributedString(string: textfield.placeholder ?? "", attributes: [NSAttributedStringKey.foregroundColor : UIColor.red])

    textfield.textColor = UIColor.green

    if let leftView = textfield.leftView as? UIImageView {
        leftView.image = leftView.image?.withRenderingMode(.alwaysTemplate)
        leftView.tintColor = UIColor.red
    }
}

下面是结果：

Answer 8:

试试这个：

[self.searchBar setValue:[UIColor whatever] forKeyPath:@"_searchField._placeholderLabel.textColor"];

您还可以设置在这个故事板，选择搜索栏，在用户自定义运行属性添加条目：

_searchField._placeholderLabel.textColor

的类型颜色 ，然后选择您需要的颜色。

Answer 9:

这是一个老的文章，但请查看这篇文章的一个合适的解决方案iPhone的UITextField -更改占位符文本颜色

Answer 10:

接受调查的一对夫妇的答案后，我走出这一点，希望它的帮助

for (UIView *subview in searchBar.subviews) {
    for (UIView *sv in subview.subviews) {
        if ([NSStringFromClass([sv class]) isEqualToString:@"UISearchBarTextField"]) {

            if ([sv respondsToSelector:@selector(setAttributedPlaceholder:)]) {
                ((UITextField *)sv).attributedPlaceholder = [[NSAttributedString alloc] initWithString:searchBar.placeholder attributes:@{NSForegroundColorAttributeName: [UIColor whiteColor]}];
            }
            break;
        }
    }
}

Answer 11:

该解决方案适用于Xcode的8.2.1。 斯威夫特与3.0。 ：

extension UISearchBar
{
    func setPlaceholderTextColorTo(color: UIColor)
    {
        let textFieldInsideSearchBar = self.value(forKey: "searchField") as? UITextField
        textFieldInsideSearchBar?.textColor = color
        let textFieldInsideSearchBarLabel = textFieldInsideSearchBar!.value(forKey: "placeholderLabel") as? UILabel
        textFieldInsideSearchBarLabel?.textColor = color
    }
}

用法示例：

searchController.searchBar.setPlaceholderTextColorTo(color: mainColor)

Answer 12:

这是一个老问题，但任何人现在绊脚石就可以了，你可以改变在iOS 8.x中的搜索图标-使用下面的10.3：

[_searchBar setImage:[UIImage imageNamed:@"your-image-name"] forSearchBarIcon:UISearchBarIconSearch state:UIControlStateNormal];

关于占位符文本颜色，你可以检查我的其他的答案，它采用了类别，此处的UISearchBar变化占位符颜色

Answer 13:

试试这个：

  UITextField *searchField = [searchbar valueForKey:@"_searchField"];
  field.textColor = [UIColor redColor]; //You can put any color here.

文章来源: UISearchBar change placeholder color