2.Swift基础控件：图标文字按钮

Swift图标标题按钮

一、自定义IconTitleButton类


import Foundation/*
枚举 设置 图片的位置
*/
enum ButtonImagePosition : Int  {case imageTop = 0case imageLeftcase imageBottomcase imageRight
}
extension UIButton {/**type ：image 的位置Space ：图片文字之间的间距*/
func setImagePosition(type:ButtonImagePosition,Space space:CGFloat)  {let imageWith :CGFloat = (imageView?.frame.size.width)!let imageHeight :CGFloat = (imageView?.frame.size.height)!var labelWidth :CGFloat = 0.0var labelHeight :CGFloat = 0.0labelWidth = CGFloat(titleLabel!.intrinsicContentSize.width)labelHeight = CGFloat(titleLabel!.intrinsicContentSize.height)var  imageEdgeInsets :UIEdgeInsets = UIEdgeInsets()var  labelEdgeInsets :UIEdgeInsets = UIEdgeInsets()switch type {case .imageTop:imageEdgeInsets = UIEdgeInsets.init(top: -labelHeight - space/2.0, left: 0, bottom: 0, right:  -labelWidth)labelEdgeInsets =  UIEdgeInsets.init(top:0, left: -imageWith, bottom: -imageHeight-space/2.0, right: 0)break;case .imageLeft:imageEdgeInsets = UIEdgeInsets.init(top:0, left:-space/2.0, bottom: 0, right:space/2.0)labelEdgeInsets =  UIEdgeInsets.init(top:0, left:space/2.0, bottom: 0, right: -space/2.0)break;case .imageBottom:imageEdgeInsets = UIEdgeInsets.init(top:0, left:0, bottom: -labelHeight-space/2.0, right: -labelWidth)labelEdgeInsets =  UIEdgeInsets.init(top:-imageHeight-space/2.0, left:-imageWith, bottom: 0, right: 0)break;case .imageRight:imageEdgeInsets = UIEdgeInsets.init(top:0, left:labelWidth+space/2.0, bottom: 0, right: -labelWidth-space/2.0)labelEdgeInsets =  UIEdgeInsets.init(top:0, left:-imageWith-space/2.0, bottom: 0, right:imageWith+space/2.0)break;}self.titleEdgeInsets = labelEdgeInsetsself.imageEdgeInsets = imageEdgeInsets}}

二、使用

import UIKitclass IconTitleButtonController: BaseViewController {override func viewDidLoad() {super.viewDidLoad()view.addSubview(btn1)view.addSubview(btn2)view.addSubview(btn3)view.addSubview(btn4)}lazy var btn1:UIButton =  {let btn = UIButton.init(frame: CGRect.init(x: 50, y: 100, width: 120, height: 40))btn.backgroundColor = .graybtn.setImage(UIImage.init(named: "tabbar_2a"), for: .normal)btn.setTitle("测试标题", for: .normal)btn.setImagePosition(type: .imageLeft, Space: 5)return btn}()lazy var btn2:UIButton = {let btn = UIButton.init(frame: CGRect.init(x: 50, y: 160, width: 120, height: 40))btn.backgroundColor = .graybtn.setImage(UIImage.init(named: "tabbar_2a"), for: .normal)btn.setTitle("测试标题", for: .normal)![]()btn.setImagePosition(type: .imageRight, Space: 5)return btn}()lazy var btn3:UIButton = {let btn = UIButton.init(frame: CGRect.init(x: 50, y:220, width: 120, height: 80))btn.backgroundColor = .graybtn.setImage(UIImage.init(named: "tabbar_2a"), for: .normal)btn.setTitle("测试标题", for: .normal)btn.setImagePosition(type: .imageTop, Space: 10)return btn}()lazy var btn4:UIButton = {let btn = UIButton.init(frame: CGRect.init(x: 50, y: 320, width: 120, height: 80))btn.backgroundColor = .graybtn.setImage(UIImage.init(named: "tabbar_2a"), for: .normal)btn.setTitle("测试标题", for: .normal)btn.setImagePosition(type: .imageBottom, Space: 10)return btn}()
}