//
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// UITabBarExtensition.swift
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// YYBase
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//
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// Created by alvin_y on 2020/4/3.
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// Copyright © 2020 yangwang. All rights reserved.
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//
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import Foundation
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extension UITabBar {
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/**
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添加小红点
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- parameter index: index
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*/
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func showBadgeOnItemIndex(index : Int){
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// 移除之前的小红点
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removeBadgeOnItemIndex(index: index)
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// 新建小红点
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let badgeView = UIView()
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badgeView.tag = 888 + index
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badgeView.layer.cornerRadius = 2.5
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badgeView.backgroundColor = UIColor.red
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let tabFrame = self.frame
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// 确定小红点的位置
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let percentX = (Double(index) + 0.6) / 4
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let x = ceilf(Float(percentX) * Float(tabFrame.size.width))
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let y = ceilf(0.2 * Float(tabFrame.size.height))
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badgeView.frame = CGRect(x: CGFloat(x) , y: CGFloat(y), width: 5, height: 5)
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self.addSubview(badgeView)
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}
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func hideBadgeOnItemIndex(index : Int){
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// 移除小红点
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removeBadgeOnItemIndex(index: index)
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}
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func removeBadgeOnItemIndex(index : Int){
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// 按照tag值进行移除
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for itemView in self.subviews {
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if(itemView.tag == 888 + index){
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itemView.removeFromSuperview()
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}
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}
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}
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}
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