如何在iOS上更改UISearchBar组件的内部背景颜色

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我知道如何删除/更改搜索字段周围的UISearchBar背景颜色:

[[self.searchBar.subviews objectAtIndex:0] removeFromSuperview];
self.searchBar.backgroundColor = [UIColor grayColor];

但是不知道如何在里面这样做:

这需要与ios 4.3+兼容。

答案

使用此代码更改搜索栏qazxsw poi background图片:

UITextField

使用以下代码更改UITextField *searchField; NSUInteger numViews = [searchBar.subviews count]; for (int i = 0; i < numViews; i++) { if ([[searchBar.subviews objectAtIndex:i] isKindOfClass:[UITextField class]]) { //conform? searchField = [searchBar.subviews objectAtIndex:i]; } } if (searchField) { searchField.textColor = [UIColor whiteColor]; [searchField setBackground: [UIImage imageNamed:@"yourImage"]]; //set your gray background image here [searchField setBorderStyle:UITextBorderStyleNone]; }

UISearchBarIcon

此外,要更改搜索栏图标,您可以在qazxsw poi上使用以下内置方法(可从iOS 5+获得):

 UIImageView *searchIcon = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"yourSearchBarIconImage"]];
searchIcon.frame = CGRectMake(10, 10, 24, 24);
[searchBar addSubview:searchIcon];
[searchIcon release];

在这里你可以设置4种类型的UISearchBar,即:

  1. - (void)setImage:(UIImage *)iconImage forSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state
  2. UISearchBarIcon
  3. UISearchBarIconBookmark
  4. UISearchBarIconClear

我希望这有助于你......

另一答案

更好的解决方案是在enter image description here中设置for (UIView* subview in [[self.searchBar.subviews lastObject] subviews]) { if ([subview isKindOfClass:[UITextField class]]) { UITextField *textField = (UITextField*)subview; [textField setBackgroundColor:[UIColor redColor]]; } } 的外观

UITextField
另一答案

只需使用类别方法遍历所有视图(在iOS 7中验证并且不使用私有API):

UISearchBar

因此,在将类别导入您的类后,只需使用它:

[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setBackgroundColor:[UIColor grayColor]];

请记住,如果您在@implementation UISearchBar (MyAdditions) - (void)changeDefaultBackgroundColor:(UIColor *)color { for (UIView *subview in self.subviews) { for (UIView *subSubview in subview.subviews) { if ([subSubview isKindOfClass:[UITextField class]]) { UITextField *searchField = (UITextField *)subSubview; searchField.backgroundColor = color; break; } } } } @end 行之后立即放置它,它将无法工作,因为搜索栏的子视图仍在创建中。设置搜索栏的其余部分后,将其放下几行。

另一答案

仅更改颜色:

[self.searchBar changeDefaultBackgroundColor:[UIColor grayColor]];

用于应用背景图像:

[[UISearchBar alloc] init]
另一答案
searchBar.tintColor = [UIColor redColor];
另一答案

这是Swift版本(swift 2.1 / IOS 9)

[self.searchBar setSearchFieldBackgroundImage:
                          [UIImage imageNamed:@"Searchbox.png"]
                                     forState:UIControlStateNormal];
另一答案

对于iOS 9使用此:

- (void)viewDidLoad
{
    [super viewDidLoad];
    [[self searchSubviewsForTextFieldIn:self.searchBar] setBackgroundColor:[UIColor redColor]];
}

- (UITextField*)searchSubviewsForTextFieldIn:(UIView*)view
{
    if ([view isKindOfClass:[UITextField class]]) {
        return (UITextField*)view;
    }
    UITextField *searchedTextField;
    for (UIView *subview in view.subviews) {
        searchedTextField = [self searchSubviewsForTextFieldIn:subview];
        if (searchedTextField) {
            break;
        }
    }
    return searchedTextField;
}
另一答案

斯威夫特3

for view in searchBar.subviews {
    for subview in view.subviews {
        if subview .isKindOfClass(UITextField) {
            let textField: UITextField = subview as! UITextField
            textField.backgroundColor = UIColor.lightGrayColor()
        }
    }
}
另一答案

对于Swift 3+,请使用:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.

// Remove lag on oppening the keyboard for the first time
UITextField *lagFreeField = [[UITextField alloc] init];
[self.window addSubview:lagFreeField];
[lagFreeField becomeFirstResponder];
[lagFreeField resignFirstResponder];
[lagFreeField removeFromSuperview];

//searchBar background color change
[[UITextField appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]] setBackgroundColor:[UIColor greenColor]];
[[UITextField appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]] setTextColor:[UIColor blackColor];

return YES;
}
另一答案

使用Swift 4,我建议您只执行此操作,无需其他代码:

for subview in searchBar.subviews {
    for innerSubview in subview.subviews {
        if innerSubview is UITextField {
            innerSubview.backgroundColor = UIColor.YOUR_COLOR_HERE
        }
    }
}

如果您不希望外部背景为灰色,也可以将.prominent更改为.minimal。

另一答案

@EvGeniy Ilyin EvGeniy Ilyin的解决方案是最好的。我根据这个解决方案编写了一个Objective-C版本。

创建一个for subView in searchController.searchBar.subviews { for subViewOne in subView.subviews { if let textField = subViewOne as? UITextField { subViewOne.backgroundColor = UIColor.red //use the code below if you want to change the color of placeholder let textFieldInsideUISearchBarLabel = textField.value(forKey: "placeholderLabel") as? UILabel textFieldInsideUISearchBarLabel?.textColor = UIColor.blue } } } 类,并在UIImage + YourCategory.h中公布两个类方法

self.searchBar.searchBarStyle = .prominent
self.searchBar.barStyle = .black

在UIImage + YourCategory.m中实现方法

UIImage

在你的+ (UIImage *)imageWithColor:(UIColor *)color withSize:(CGRect)imageRect; + (UIImage *)roundImage:(UIImage *)image withRadius:(CGFloat)radius; 制作自己的// create image with your color + (UIImage *)imageWithColor:(UIColor *)color withSize:(CGRect)imageRect { UIGraphicsBeginImageContext(imageRect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, imageRect); UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; } // get a rounded-corner image from UIImage instance with your radius + (UIImage *)roundImage:(UIImage *)image withRadius:(CGFloat)radius { CGRect rect = CGRectMake(0.0, 0.0, 0.0, 0.0); rect.size = image.size; UIGraphicsBeginImageContextWithOptions(image.size, NO, [UIScreen mainScreen].scale); UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:radius]; [path addClip]; [image drawInRect:rect]; image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; }

UISearchBar
另一答案

只需自定义文本字段。

我只是这样做,它适用于我(iOS 7)。

UISearchBarIconResultsList

这样您就不需要创建图像,调整大小等等......

另一答案

这对我有用。

ViewController
另一答案

这有助于我在搜索栏中更改textField的背景颜色。

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