Question

我正在尝试更改UISearchBar输入字段的背景颜色。这是您输入要搜索的文本的圆角视图，默认颜色为白色。我想把它改成灰色

我试过了：

for (UIView *subView in searchBar.subviews) {
    if ([subView isKindOfClass:NSClassFromString(@"UITextField")]) {
        UITextField *textField = (UITextField *)subView;
        [textField setBackgroundColor:[UIColor grayColor]];
    }

但它不起作用：（

我还尝试将图像视图插入TextField，但看起来圆角视图与TextField是分开的。那么，有什么线索吗？

Answer 1

=）

for (UIView *subView in _searchBar.subviews) {
    for(id field in subView.subviews){
        if ([field isKindOfClass:[UITextField class]]) {
            UITextField *textField = (UITextField *)field;
            [textField setBackgroundColor:[UIColor grayColor]];
        }
    }
}

Answer 2

查看功能：

[searchBar setSearchFieldBackgroundImage:[UIImage imageNamed:@"search_bar"] forState:UIControlStateNormal];

Answer 3

在Swift 2和iOS 9中，您可以致电：

UITextField.appearanceWhenContainedInInstancesOfClasses([UISearchBar.self]).backgroundColor = UIColor.darkGrey()

斯威夫特3：

UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).backgroundColor = UIColor.darkGrey()

Answer 4

Swift 3中的解决方案：

if let txfSearchField = searchController.searchBar.value(forKey: "_searchField") as? UITextField {
        txfSearchField.borderStyle = .none
        txfSearchField.backgroundColor = .lightGray
}

Answer 5

使扩展程序在swift4中起作用：

extension UISearchBar {

    var input : UITextField? {

        return findInputInSubviews(of: self)
    }

    func findInputInSubviews(of view: UIView) -> UITextField? {
        guard view.subviews.count > 0 else { return nil }
        for v in view.subviews {
            if v.isKind(of: UITextField.self) {
                return v as? UITextField
            }
            let sv = findInputInSubviews(of: v)
            if sv != nil { return sv }
        }
        return nil
    }
}

用法：

searchBar?.input?.layer.borderColor = color.cgColor

UISearchBar：改变输入字段的背景颜色

5 个答案: