自定义UIAlertView block实现点击事件

使用系统自带的AlertView时候难免需要实现代理方法，不如使用block方便，这里通过UIView自定义一个AlertView，可以无按钮，一个按钮，两个按钮三种形式

效果

下面先看一下效果图吧

image
image
image

使用

LYAlertView.show("title", "message")

LYAlertView.show("title", "message", "btnTitle", {
//点击按钮
})
LYAlertView.show("title", "message", "leftTitle", "rightTitle", {
//右按钮
}, { 
//左按钮
})

源码

下面直接将代码展示出来，你可以选择借鉴或者直接复制下面代码，或者使用LYTools

//
//  LYAlertView.swift
//  qixiaofu
//   _
//  | |      /\   /\
//  | |      \ \_/ /
//  | |       \_~_/
//  | |        / \
//  | |__/\    [ ]
//  |_|__,/    \_/
//
//  Created by ly on 2017/6/29.
//  Copyright © 2017年 qixiaofu. All rights reserved.
//

import UIKit
import QuartzCore

let KTitltOringy:CGFloat = 15.0
let KTitltHeight:CGFloat = 25.0
let KContentOringy:CGFloat = 30.0
let KBetweenLableOffset:CGFloat = 20.0
let KAlertWidth:CGFloat = 245.0
let KAlertHeight:CGFloat = 160.0

typealias leftBlock = () ->()
typealias rightBlock = ()->()
typealias DelaydismissBlock = ()->()


class LYAlertView: UIView {

var leftblock : leftBlock?
var rightblock : rightBlock?
var dismissblock : DelaydismissBlock?
var alertTitleLabel : UILabel?
var alertContentLabel : UILabel?
var leftBtn : UIButton?
var rightBtn : UIButton?
var backImageView:UIView?

var delayTime:Int64 = 0

override init(frame: CGRect) {
super.init(frame: frame)
self.backgroundColor = UIColor.black.withAlphaComponent(0.3)
self.addTapActionBlock { 
if (self.dismissblock != nil){
self.dismissblock!()
}
self.removeFromSuperview()
}
}

//没有按钮
func initBody(title:String,message:String,DismissDelay:Int64)
{
self.delayTime = DismissDelay
self.initTwoBtn(title: title, message: message, cancelButtonTitle: "", otherButtonTitle: "")
}
//一个按钮
func initOneBtn(title:String,message:String,ButtonTitle:String)
{
self.initTwoBtn(title: title, message: message, cancelButtonTitle: "", otherButtonTitle: ButtonTitle)
}
//两个按钮
func initTwoBtn(title:String,message:String,cancelButtonTitle:String,otherButtonTitle:String) {

//super.init(frame: CGRectZero)
backImageView = UIImageView(frame: CGRect(x:0, y:0, width:KAlertWidth, height:KAlertHeight))
backImageView?.center = self.center
backImageView?.backgroundColor = UIColor.RGBS(s: 250)
backImageView?.layer.cornerRadius = 15.0
backImageView?.isUserInteractionEnabled = true
self.addSubview(backImageView!)


alertTitleLabel = UILabel(frame: CGRect(x:0, y:KTitltOringy, width:KAlertWidth, height:KTitltHeight))
alertTitleLabel!.font = UIFont.boldSystemFont(ofSize: 20.0)
alertTitleLabel!.textColor = UIColor(red:56.0/255.0,green:64.0/255.0,blue:71.0/255.0,alpha:1)
backImageView?.addSubview(alertTitleLabel!)


let contentLabelWidth = KAlertWidth - 16
alertContentLabel = UILabel(frame:CGRect(x:(KAlertWidth - contentLabelWidth) * 0.5, y:alertTitleLabel!.frame.maxY, width:contentLabelWidth, height:60))
alertContentLabel!.numberOfLines = 0
alertContentLabel!.textAlignment = NSTextAlignment.center
alertTitleLabel!.textAlignment = NSTextAlignment.center
alertContentLabel!.textColor = UIColor(red:127.0/255.0,green:127.0/255.0,blue:127.0/255.0,alpha:1)
alertContentLabel!.font = UIFont.systemFont(ofSize: 15.0)
backImageView?.addSubview(alertContentLabel!)

alertTitleLabel!.text = title as String
alertContentLabel!.text = message as String

let KSingleButtonWidth:CGFloat = 160.0
let kCoupleButtonWidth:CGFloat = 107.0
let kButtonHeight:CGFloat = 40.0
let kButtonBottomOffset:CGFloat = 10.0

//没有按钮
if cancelButtonTitle.isEmpty && otherButtonTitle.isEmpty{
alertTitleLabel?.frame.origin.y = KTitltOringy+20
alertContentLabel?.frame.size.height = 100
if(self.delayTime==0){
self.delayTime = 2
}
DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + Double((Int64)(UInt64(self.delayTime) * NSEC_PER_SEC)) / Double(NSEC_PER_SEC), execute: {
if (self.dismissblock != nil){
self.dismissblock!()
}
self.removeFromSuperview()
})
return
}else if !cancelButtonTitle.isEmpty && !otherButtonTitle.isEmpty {
//两个按钮
let leftBtnFrame = CGRect(x:(KAlertWidth - 2 * kCoupleButtonWidth - kButtonBottomOffset) * 0.5, y:KAlertHeight - kButtonBottomOffset/2.0 - kButtonHeight, width:kCoupleButtonWidth, height:kButtonHeight);
let rightBtnFrame = CGRect(x:leftBtnFrame.maxX + kButtonBottomOffset, y:KAlertHeight - kButtonBottomOffset/2.0 - kButtonHeight, width:kCoupleButtonWidth, height:kButtonHeight);
leftBtn = UIButton(frame:leftBtnFrame);
rightBtn = UIButton(frame:rightBtnFrame)

//        rightBtn!.setBackgroundImage( UIImage(named: "button_orange_normal") ,for:UIControlState.normal)
//        rightBtn!.setBackgroundImage( UIImage(named: "button_orange_click") ,for:UIControlState.selected)
rightBtn!.setTitle(otherButtonTitle as String, for: UIControlState.normal)
rightBtn!.titleLabel!.font = UIFont.boldSystemFont(ofSize: 14)
rightBtn!.setTitleColor(UIColor.RGBS(s: 33),for:UIControlState.normal)
rightBtn!.addTarget(self, action: #selector(LYAlertView.rightBtnClicked), for: UIControlEvents.touchUpInside)
rightBtn!.layer.masksToBounds = true
rightBtn!.layer.cornerRadius = 3.0
backImageView?.addSubview(rightBtn!)

//按钮上面的线
let topLine = UIView.init(frame: CGRect(x:0, y:KAlertHeight - kButtonBottomOffset - kButtonHeight, width:KAlertWidth, height:1.5))
topLine.backgroundColor = UIColor.RGBS(s: 240)
backImageView?.addSubview(topLine)


//按钮之间的线
let bottomLine = UIView.init(frame: CGRect(x:leftBtnFrame.maxX + kButtonBottomOffset/2.0, y:KAlertHeight - kButtonBottomOffset - kButtonHeight, width:1.5, height:kButtonHeight + kButtonBottomOffset))
bottomLine.backgroundColor = UIColor.RGBS(s: 240)
backImageView?.addSubview(bottomLine)

}else{
//按钮上面的线
let topLine = UIView.init(frame: CGRect(x:0, y:KAlertHeight - kButtonBottomOffset - kButtonHeight, width:KAlertWidth, height:1.5))
topLine.backgroundColor = UIColor.RGBS(s: 240)
backImageView?.addSubview(topLine)
//一个按钮
leftBtn = UIButton(frame:CGRect(x:(KAlertWidth-KSingleButtonWidth)/2, y:KAlertHeight - kButtonBottomOffset/2.0 - kButtonHeight, width:KSingleButtonWidth, height:kButtonHeight))
}

//            leftBtn?.setBackgroundImage(UIImage(named: "button_white_normal"), for: UIControlState.normal)
//            leftBtn?.setBackgroundImage(UIImage(named: "button_white_clicked"), for: UIControlState.selected)
leftBtn!.setTitle(cancelButtonTitle as String, for: UIControlState.normal)
leftBtn!.titleLabel!.font = UIFont.boldSystemFont(ofSize: 14)
leftBtn!.setTitleColor(UIColor.RGBS(s: 33),for:UIControlState.normal)
leftBtn!.addTarget(self, action: #selector(LYAlertView.leftBtnClicked), for: UIControlEvents.touchUpInside)
leftBtn!.layer.masksToBounds = true
backImageView?.addSubview(leftBtn!)
leftBtn!.layer.masksToBounds = true
leftBtn!.layer.cornerRadius = 3.0
}

func leftBtnClicked(){
if (self.leftblock != nil){
self.leftblock!()
}
self.dismiss()
}

func rightBtnClicked(){
if (self.rightblock != nil){
self.rightblock!()
}
self.dismiss()
}
//MARK: - 显示
//2个按钮
class func show( _ title:String, _ message:String, _ leftTitle:String, _ rightTitle:String, _ rightClick:rightBlock? = nil, _ leftClick:leftBlock? = nil, _ dismissBlock:DelaydismissBlock? = nil)->Void{
let alert = LYAlertView.init(frame: CGRect(x:0, y:0, width:UIScreen.main.bounds.width, height:UIScreen.main.bounds.height))
alert.initTwoBtn(title: title, message: message, cancelButtonTitle: leftTitle, otherButtonTitle: rightTitle)
alert.occur(animation: true)

alert.leftblock = leftClick
alert.rightblock = rightClick
alert.dismissblock = dismissBlock
}

//1个按钮
class func show( _ title:String, _ message:String, _ leftTitle:String, _ leftClick:leftBlock? = nil, _ dismissBlock:DelaydismissBlock? = nil)->Void{
self.show(title, message, leftTitle, "", nil, leftClick, dismissBlock)
}

//0个按钮
class func show( _ title:String, _ message:String, _ dismissBlock:DelaydismissBlock? = nil)->Void{
self.show(title, message, "", "", nil, nil, dismissBlock)
}

func occur(animation:Bool) -> Void{

UIApplication.shared.keyWindow?.addSubview(self)
UIApplication.shared.keyWindow?.bringSubview(toFront: self)

if animation {

UIView.animate(withDuration: 0.1, delay: 0, options:
UIViewAnimationOptions.transitionCrossDissolve, animations: { () -> Void in
self.alpha = 1.0
self.backImageView?.layer.setAffineTransform(CGAffineTransform(scaleX: 0.9, y: 0.9))
}) { (Bool) -> Void in
UIView.animate(withDuration: 0.1, delay: 0, options: UIViewAnimationOptions.transitionCrossDissolve, animations: { () -> Void in
self.backImageView?.layer.setAffineTransform(CGAffineTransform(scaleX: 1.1, y: 1.1))
}) { (Bool) -> Void in
UIView.animate(withDuration: 0.1, delay: 0, options: UIViewAnimationOptions.transitionCrossDissolve, animations: { () -> Void in
self.backImageView?.layer.setAffineTransform(CGAffineTransform(scaleX: 0.9, y: 0.9))
}) { (Bool) -> Void in
self.backImageView?.layer.setAffineTransform(CGAffineTransform(scaleX: 1.0, y: 1.0))
}
}
}
}
}

func dismiss() -> Void{
UIView.animate(withDuration: 0.2, delay: 0, options: UIViewAnimationOptions.transitionCrossDissolve, animations: { () -> Void in
self.alpha = 0
}) { (Bool) -> Void in
self.removeFromSuperview()
}
}

required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}


}