如何在ios swift中的UIBarButton上添加徽章通知,
这是我的UIBarButton代码迅速
let addtocartButton = UIBarButtonItem(image: UIImage(named: "Addtocartimg"),
style: .plain,
target: self,
action: #selector(self.movToToCarts))
self.navigationItem.rightBarButtonItem = addtocartButton
答案 0 :(得分:2)
let cartButton = SSBadgeButton()
override func viewDidLoad() {
super.viewDidLoad()
cartButton.frame = CGRect(x: 0, y: 0, width: 44, height: 44)
cartButton.setImage(UIImage(named: "menu")?.withRenderingMode(.alwaysTemplate), for: .normal)
cartButton.badgeEdgeInsets = UIEdgeInsets(top: 20, left: 0, bottom: 0, right: 15)
cartButton.addTarget(self, action: #selector(cartButtonTapped), for: .touchUpInside)
cartButton.badge = "4"
self.navigationItem.rightBarButtonItems = [UIBarButtonItem(customView: cartButton)
}
徽章按钮文件
import Foundation
import UIKit
class SSBadgeButton: UIButton {
var badgeLabel = UILabel()
var badge: String? {
didSet {
addBadgeToButon(badge: badge)
}
}
public var badgeBackgroundColor = UIColor.red {
didSet {
badgeLabel.backgroundColor = badgeBackgroundColor
}
}
public var badgeTextColor = UIColor.white {
didSet {
badgeLabel.textColor = badgeTextColor
}
}
public var badgeFont = UIFont.systemFont(ofSize: 12.0) {
didSet {
badgeLabel.font = badgeFont
}
}
public var badgeEdgeInsets: UIEdgeInsets? {
didSet {
addBadgeToButon(badge: badge)
}
}
override init(frame: CGRect) {
super.init(frame: frame)
addBadgeToButon(badge: nil)
}
func addBadgeToButon(badge: String?) {
badgeLabel.text = badge
badgeLabel.textColor = badgeTextColor
badgeLabel.backgroundColor = badgeBackgroundColor
badgeLabel.font = badgeFont
badgeLabel.sizeToFit()
badgeLabel.textAlignment = .center
let badgeSize = badgeLabel.frame.size
let height = max(18, Double(badgeSize.height) + 5.0)
let width = max(height, Double(badgeSize.width) + 10.0)
var vertical: Double?, horizontal: Double?
if let badgeInset = self.badgeEdgeInsets {
vertical = Double(badgeInset.top) - Double(badgeInset.bottom)
horizontal = Double(badgeInset.left) - Double(badgeInset.right)
let x = (Double(bounds.size.width) - 10 + horizontal!)
let y = -(Double(badgeSize.height) / 2) - 10 + vertical!
badgeLabel.frame = CGRect(x: x, y: y, width: width, height: height)
} else {
let x = self.frame.width - CGFloat((width / 2.0))
let y = CGFloat(-(height / 2.0))
badgeLabel.frame = CGRect(x: x, y: y, width: CGFloat(width), height: CGFloat(height))
}
badgeLabel.layer.cornerRadius = badgeLabel.frame.height/2
badgeLabel.layer.masksToBounds = true
addSubview(badgeLabel)
badgeLabel.isHidden = badge != nil ? false : true
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
self.addBadgeToButon(badge: nil)
fatalError("init(coder:) has not been implemented")
}
}
答案 1 :(得分:0)
您可以在this question下看到我的答案。建议您参考QMUIBadge的代码。但这是在Objective-C中。