How to change SearchBar border color

问题:

I would like to change grey border color in my Search Bar to white color. Now it looks like that:

I achieved this effect after using this lines of code, but "inside border" is still grey:

var searchBar: UISearchController!

    self.searchBar.searchBar.backgroundColor = UIColor.whiteColor()
    self.searchBar.searchBar.layer.borderWidth = 3
    self.searchBar.searchBar.layer.borderColor = UIColor.whiteColor().CGColor
    self.searchBar.searchBar.layer.backgroundColor = UIColor.whiteColor().CGColor
    self.searchBar.searchBar.tintColor = UIColor(red: 0.3, green: 0.63, blue: 0.22, alpha: 1)

Can somebody help me in it?

回答1:

self.searchBar.searchBar.searchBarStyle = UISearchBarStyle.Prominent
self.searchBar.searchBar.translucent = false
let textFieldInsideSearchBar = self.searchBar.searchBar.valueForKey("searchField") as? UITextField
textFieldInsideSearchBar?.backgroundColor = UIColor.whiteColor()
self.searchBar.searchBar.barTintColor = UIColor.whiteColor()

Code above will give you all white searchbar but likely there will be black lines at top and bottom of the searchbar as you can see from the attachment. If you see the black lines and if you don't want them, change;

self.searchBar.searchBar.barTintColor = UIColor.whiteColor()

with

self.searchBar.searchBar.backgroundImage = UIImage(named: "nameOfYourWhiteImage")

And you will have a clean white searchbar. Hope this solves your problem. Good luck!

回答2:

I suggest using 2 handy extensions for that:

extension UIImage {
    static func imageFromLayer (layer: CALayer) -> UIImage? {
        UIGraphicsBeginImageContext(layer.frame.size)
        guard let currentContext = UIGraphicsGetCurrentContext() else {return nil}
        layer.render(in: currentContext)
        let outputImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return outputImage
    }
}

extension UISearchBar {
    func setCustomBackgroundColor (color: UIColor) {
        let backgroundLayer = CALayer()
        backgroundLayer.frame = frame
        backgroundLayer.backgroundColor = color.cgColor
        if let image = UIImage.imageFromLayer(layer: backgroundLayer) {
            self.setBackgroundImage(image, for: .any, barMetrics: .default)
        }
    }
}

Then just use:

self.searchBar.setCustomBackgroundColor (color: UIColor.white)