本人第一篇文章，希望大家多多支持，目前支持swift4.1，废话不多说，直接上代码
继承 UIButton
publiclet LLLUibuttonRatio = 0.7
class LLButton:UIButton{
overrideinit(frame:CGRect) {
super.init(frame: frame)
self.imageView?.contentMode = .center
self.titleLabel?.textAlignment = .center
self.titleLabel?.font = UIFont.systemFont(ofSize: 11)
}
overridevarisHighlighted:Bool{
set{
}
get{
return false
}
}
overridefuncimageRect(forContentRect contentRect:CGRect) ->CGRect{
let imageW:CGFloat= contentRect.size.width
let imageH:CGFloat = contentRect.size.height * CGFloat(LLLUibuttonRatio)
return CGRect(x: 0,y: 0,width: imageW,height: imageH)
}
overridefunctitleRect(forContentRect contentRect:CGRect) ->CGRect{
let titleY:CGFloat = contentRect.size.height * CGFloat(LLLUibuttonRatio)
let titleW:CGFloat= contentRect.size.width
let titleH:CGFloat= contentRect.size.height- titleY - 8
return CGRect(x: 0,y: titleY,width: titleW,height: titleH)
}
requiredinit?(coder aDecoder:NSCoder) {
fatal Error("init(coder:) has not been implemented")
}
}
继承 UIView
//声明代理方法
protocolLLMyTabbarDelegate:NSObjectProtocol{
func tabbarDidSelectedButtomFromto(tabbar:LLMyTabbar,from:Int,to:Int)
}
class LLMyTabbar:UIView{
//delegate 要写在class里面，否则无效
var delegate:LLMyTabbarDelegate?
var nomarlButton =UIButton()
var seletedButton =UIButton()
overrideinit(frame:CGRect) {
super.init(frame: frame)
}
requiredinit?(coder aDecoder:NSCoder) {
fatalError("init(coder:) has not been implemented")
}
funcaddTabBarButtonWithItem(item:UITabBarItem)->Void{
letbutton:LLButton=LLButton(type: .custom)
self.addSubview(button)
button.setTitleColor(UIColor.gray, for: .normal)
button.setTitleColor(colorWithHexString(Color_Value: "#ff5f53", alpha: 1), for: UIControl.State.selected)
button.setTitle(item.title, for: .normal)
button.setImage(item.image, for: .normal)
button .setImage(item.selectedImage, for: .selected)
button.backgroundColor = UIColor.white
button.addTarget(self, action:#selector(buttonClick(_:)), for: .touchUpInside)
ifself.subviews.count== 1 {
self.buttonClick(button)
}
}
//button 调用方法传参使用 需注意
@objcfuncbuttonClick(_sender:UIButton) {
//调用代理
if(delegate?.responds(to:Selector(("tabbarDidSelectedButtomFromto"))) !=nil) {
delegate?.tabbarDidSelectedButtomFromto(tabbar: self, from: seletedButton.tag, to: sender.tag)
}
seletedButton.isSelected = false
sender.isSelected=true
seletedButton= sender
}
overridefunclayoutSubviews() {
super.layoutSubviews()
forvarindexin0...(self.subviews.count-1) {
letbutton:LLButton=self.subviews[index]as!LLButton
let number:Int = Int(CGFloat(kScreenWidth))/Int(self.subviews.count)
let width:CGFloat = CGFloat(self.frame.size.width)/CGFloat(Int(self.subviews.count))
letX:CGFloat=CGFloat(index * number)
letY:CGFloat= 0.0
button.frame=CGRect(x: X,y: Y,width: width,height:self.frame.size.height)
button.tag= index
index = index + 1
}
}
}
Demo地址 https://github.com/1461139257/customTabbarSwift.git
希望大家会喜欢！有问题可以下方留言，谢谢