UITabBar+CNBadge.swift
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//
// UITabBar+CNBadge.swift
// metaCode
//
// Created by daojian on 2023/6/5.
//
import Foundation
import UIKit
extension UITabBar {
/**
tabbar tag
*/
private var badgeTag:Int! {
get{
return 1000
}
set{
}
}
/**
运行时对应的key值
*/
private struct AssociatedKeys {
static var kBadgeSize:String! = "kBadgeSize"
static var kBadgeColor:String! = "kBadgeColor"
static var kBadgeImage:String! = "kBadgeImage"
static var kBadgePoint:String! = "kBadgePoint"
static var kBadgeValue:String! = "kBadgeValue"
}
// 小红点size
public var badgeSize:CGSize! {
get{
return objc_getAssociatedObject(self, &AssociatedKeys.kBadgeSize) as? CGSize
}
set{
objc_setAssociatedObject(self, &AssociatedKeys.kBadgeSize, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
// 小红点图片
public var badgeImage:UIImage! {
get{
return objc_getAssociatedObject(self, &AssociatedKeys.kBadgeImage) as? UIImage
}
set{
objc_setAssociatedObject(self, &AssociatedKeys.kBadgeImage, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
// 小红点颜色
public var badgeColor:UIColor! {
get{
return objc_getAssociatedObject(self, &AssociatedKeys.kBadgeColor) as? UIColor
}
set{
objc_setAssociatedObject(self, &AssociatedKeys.kBadgeColor, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
// 小红点的x、y值
public var badgePoint:CGPoint! {
get{
return objc_getAssociatedObject(self, &AssociatedKeys.kBadgePoint) as? CGPoint
}
set{
objc_setAssociatedObject(self, &AssociatedKeys.kBadgePoint, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
// 小红点的数字
public var badgeValue:String! {
get{
return objc_getAssociatedObject(self, &AssociatedKeys.kBadgeValue) as? String
}
set{
objc_setAssociatedObject(self, &AssociatedKeys.kBadgeValue, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
// MARK:-显示小红点
public func showBadgeOnItemIndex(index:Int){
// 移除
self.removeRedPointOnIndex(index: index, animation: false)
// 防止是空的
if self.badgeColor == nil {
self.badgeColor = UIColor()
self.badgeColor = UIColor.red
}
if self.badgePoint == nil {
self.badgePoint = CGPoint()
self.badgePoint = CGPoint.zero
}
if self.badgeSize == nil {
self.badgeSize = CGSize.zero
}
if self.badgeImage == nil {
self.badgeImage = UIImage()
}
if self.badgeValue == nil {
self.badgeValue = String()
}
// 小红点背景默认值大小设置
if __CGSizeEqualToSize(self.badgeSize, CGSize.zero) {
self.badgeSize = CGSize(width: 12, height: 12)
}
let badgeView = UIView()
badgeView.backgroundColor = self.badgeColor
badgeView.layer.cornerRadius = self.badgeSize.width / 2
badgeView.tag = badgeTag + 1
let barButtonView = self.getBarButttonViewWithIndex(index: index)
//（图片的imageView）
var iconView = UIView()
for swappableImageView in barButtonView.subviews {
if swappableImageView.isKind(of: UIImageView.self) {
iconView = swappableImageView
break
}
}
// 小红点背景默认值Point设置
if __CGPointEqualToPoint(self.badgePoint, CGPoint.zero) {
let iconViewSize = iconView.frame.size
badgeView.frame = CGRect(x: iconViewSize.width - self.badgeSize.width / 2, y: -self.badgeSize.width / 2, width: self.badgeSize.width, height: self.badgeSize.height)
}else{
badgeView.frame = CGRect(x: self.badgePoint.x, y: self.badgePoint.y, width: self.badgeSize.width, height: self.badgeSize.height)
}
// 添加图片到小红点上
let imageview = UIImageView(frame: badgeView.bounds)
imageview.image = self.badgeImage
if self.badgeImage != nil {
self.backgroundColor = UIColor.red
}
badgeView.addSubview(imageview)
if self.badgeValue != nil {
let badgeLabel = UILabel(frame: badgeView.bounds)
badgeLabel.text = self.badgeValue
badgeLabel.textAlignment = .center
badgeLabel.font = UIFont.systemFont(ofSize: 13)
badgeLabel.textColor = UIColor.white
badgeView.addSubview(badgeLabel)
}
iconView.addSubview(badgeView)
}
// MARK:-隐藏小红点
public func hiddenRedPointOnIndex(index:Int, animation:Bool){
self.removeRedPointOnIndex(index: index, animation: animation)
}
private func removeRedPointOnIndex(index:Int, animation:Bool) {
let barButtonView = self.getBarButttonViewWithIndex(index: index)
for swapView in barButtonView.subviews {
if swapView.isKind(of: UIImageView.self) {
for view1 in swapView.subviews {
if view1.tag == (badgeTag + 1) {
if animation {
UIView.animate(withDuration: 0.2, animations: {
view1.transform = CGAffineTransform(translationX: 2, y: 2)
view1.alpha = 0
}) { (finished) in
view1.removeFromSuperview()
}
}else{
view1.removeFromSuperview()
}
}
}
}
}
}
// 获取barButtonView
private func getBarButttonViewWithIndex(index:Int) -> UIView {
if let itemss = self.items {
let item = itemss[index]
let barButtonView = item.value(forKey: "view")
return barButtonView as! UIView
}
let vw = UIView()
return vw
}
}