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 = 0
    case imageLeft
    case imageBottom
    case 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 = 0.0
        var labelHeight :CGFloat = 0.0

        labelWidth = 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 = labelEdgeInsets
        self.imageEdgeInsets = imageEdgeInsets
    }
  
}

二、使用

import UIKit

class 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 = .gray
        btn.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 = .gray
        btn.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 = .gray
        btn.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 = .gray
        btn.setImage(UIImage.init(named: "tabbar_2a"), for: .normal)
        btn.setTitle("测试标题", for: .normal)
        btn.setImagePosition(type: .imageBottom, Space: 10)
        return btn
    }()
}